How to identify promaxx heads. Search by Make/Engine.

How to identify promaxx heads Say an engine that's not in heads up class or going for ever hundredth, and looking for 1000 or less Hp, they there a very good and respectable option IMO. I'm trying to figure out who made them. The plan is to buy a pair of bare heads, and just have them lying on my work bench and take the time to make them good. 317cc intake runners great for street, street/strip, power tour, or smaller cubic inch competition (427-525ci). I have the 200cc heads from him and they have been great . The porting of performance cylinder heads has long been an essential part of attaining maximum horsepower. A. Minimize Vehicle Downtime: Traditional methods of repairing damaged cylinder heads can take up to 15 hours or more. I probably should have bought the 340 short block or whole engine six months ago but it would have still been sitting PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads. Remove the valve cover to access the World head identification numbers. He is now selling the Promaxx heads for the same engines and has picked up power on less boost with the Promaxx heads. ProMaxx heads are cast in china and are poor quality. 6L cylinder heads. Would love to see rear wheel dyno sheets from people with NA 302's with these other heads. 300 intake compared to the AFR 335 with 2. Manufactured from high-quality aluminum, they are assembled with the finest components. Promaxx bought Patriot, and sells them still as their "Freedom" series. PROMAXX Performance Freedom Series small block Chevy cylinder heads offer exceptional quality at an unbelievable price. $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* - Use Promo Code: 2025 I have done many many 6. What is your fuel pressure? ProMaxx Performance Products has established itself in the marketplace as a manufacturer of affordable aluminum cylinder heads that perform better than their price might suggest. Joined Jun 12, 2009 Messages 726 Reaction score 1,047 Edelbrock, A good head when introduced. Bought this partially assembled engine and it had some cheap aluminum heads on it. 7 shaft rockers and beehives. The ProMaxx heads respond to the same things that any production head respond to; some attention to detail. Generally when buying heads, especially lower cost heads it's a good idea to buy them bare then select your own valves and match the springs to the cam with the manufacturer's kit. $1,403. Sold 3/2018 1970 SS 396 restoration project in progress Tracy Blackford, 65 Mustang FB, 331 built with 289 H beam rods and 383W piston, 282S cam, ported Promaxx 180 heads, Dougs Tri-Y headers. Independent flow bench testing shows over 400 cfm with 2. The 0331 TUPY head is an excellent 4. The quality is what I care about and am willing to put my name behind. Always look out for these red flags before entering your personal or payment information. Pro comp heads are known for their high-quality materials, precision engineering, and superior performance. How to identify your GT40 heads look for a "GT" or "GT40P" stamp inside the head casting or a three-bar Rated 4 out of 5 by Monkeyvibes from Good heads for the price The ProMaxx SBF aluminum heads are a great deal better than factory offerings. 0 HO shortblock with stock replacement pistons, FTI 223/227 @ . 0L/302 PROMAXX Performance Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! More Power in Every Purchase - Join the Summit Rewards Program Today! Cylinder Heads, Maxx Series Small Block Ford Heads, Bare, Aluminum, 60cc Chamber, 175cc Intake, Ford, Small Block, Pair. Check out Trick Flows new Cylinder Head and Camshaft for 2V 4. I dont know if a person would even feel the difference. 0L Ford) heads. I always push American products over Chinese even though the promaxx heads are decent. Here is how you can do it: Visual Inspection: Start by looking at each sprinkler head while the system is off. if i was building a 383, i'd do the 75cc chamber E-Street head. 383. Search by Make/Model. To identify pro comp heads, check for branding and casting numbers. Reactions: Hink, jrsavoie, n8in8or and 4 others. by Tom Dufur The big-block Chevy’s canted valve heads are largely responsible for the tremendous power capability of the Rat motor and its continued popularity. SLPRACINGENGINES wrote:i saw a vidoe on youtube of the promaxx heads. I see that Flo-Tek heads, 102-500 might be an alternative. This head will change the industry. For a closed chamber 4v head the casting # would be D0AE-H, D0AE-R, D1ZE-B, or D2ZE-A. This is common. Out prices by all the below heads because the Chinks work stupid cheap and in this case, produced a good head that ports out better than the original. On paper, the specs on the BBC heads supplied for the test certainly looked impressive. I imagine everything after 9217-185 is the date/batch codes. Search Within Results. Features; Flow Chart; Cylinder Head Options; Technical Specs; Additional information; Ultra-smooth 356-T6 Aluminum Casting; Competition 5 angle valve job; Free Shipping - PROMAXX Performance Maxx Series Big Block Chevy Cylinder Heads with qualifying orders of $109. The heads were upgraded with a spring package to allow for the high-lift, hydraulic roller cam. I'm not sure what this stalling issue is that you refer to. 248cc intake runners, 69cc combustion chambers. T-flow cylinder heads www. The stock heads were also run with a set of guided, 1. Promaxx heads. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search ProMaxx Performance Maxx Series Chevrolet Small Block Aluminum Heads Made right here in the U. Step 1. Asked by: James1959 In the 183 series cylinder heads they only come assembled with springs for hydraulic flat tappet applications. ProMaxx, Maxx 290 Oval Port, Chevrolet Big Block Aluminum Heads: 290cc/110cc, Assembled, Mechanical Roller (up to . 05 intake valve. Shop Cylinder Heads at Summit Racing. 050 cam, mine had . com Flowing Promaxx Ls3 large bore, small bore, and 245cc cathedral port heads. I've run across the Flotec 290. F. In 1987-1990 the cylinder head casting number is 2686. Add to cart. I see the have a X series with 185 intake runners. 00) Maxx 180 SBF (Sold in Pairs) quantity. PROMAXX Performance Products specializes in all types of automotive cylinder head for any budget, carrying Performance cylinder heads, diesel cylinder heads and stock replacement You could use Factory ported ls3 heads or Promaxx/ Liberty heads with good seats and guides done for under $2k However, as with all heads being made these days, check them before install to ensure that the casting is true. I am telling you I sell the Brodix race rites for really close to what I sell promaxx heads for. 08/1. Measure valve stem height from one end to the other, check In my opinion a 434 displacement small block is race territory and the heads installed should be sized accordingly. Heads for an upcoming 347 Stroker build Don't forget to Like & Subscribe Follow me on instagram You would have to pull the intake manifold off and read the casting number with a mirror, they are on the underside of an intake port. However, they aren’t content to have that reputation for just a few applications. Developed and designed after an OE casting for direct bolt-on replacement, ProMaxx improved on casting strength and thickness in all the crack-prone areas for durability. They add a significant boost in performance over even the best factory SBF Windsor engine series heads And and Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. SlowBoat Member. Bought 5/2018. Speedmaster & promaxx, These are the same heads. com/#!/2024-SBC-Dyno-Mule-Sessio A: Starting with the basics, 2V heads are designed for use with a factory 2-barrel carburetor option (2V = 2 venturi), while 4V heads came on one of the five Ford 351C engine configurations that came with a 4-barrel carburetor Find PROMAXX Performance Maxx Series Small Block Chevy Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. These heads feature ultra-smooth 356 T-6 aluminum casting, 5-angle valve jobs, precision Joined Sep 30, 2010 Messages 6,293 Reaction score 1,240 Location Mustang, OK. So, if this is a Chinese copy of an actual GM design, it would be at least 45 years old. With ultra-smooth Grade A 356-T6 aluminum castings that are precision CNC-machined, The 390GT and 428CJ heads aren't the same, in fact quite different- and the GT head isn't really a very good head, having the later lowered exhaust ports. An As Cast head that is just as efficient as competition’s CNC ported pieces. At the time, the so-called experts said it was the head to use to wake up a 2V ProMAXX Tool’s Cylinder Head Repair Kit, with the Blind ProSert, allows technicians to rescue a botched repair where an attempt to drill out a broken exhaust manifold bolt has penetrated the cylinder head. I had vortec heads before and my car pulled way harder with the promaxx , I have 355 sbc If the castings are consistently solid they will definitely fall into the "best bang for your buck" category and I will have some orders for them, I've seen a flow comparison of the ProMaxx 185 and 200 to the AFR 180 and 195 sbc heads and I remember the difference between the Maxx 200 and AFR 180 are marginal in an "as cast" form, so factor in anybody here run the promaxx (former patriot) heads? specifically the 2117 or 2121 225cc runner versions? thinking of picking some up for a budget solid flat tappet 350 just call and find out the right part number for your set up. Most discussions are positive. The economical "As-Cast" aluminum versions feature ultra-smooth 356-T6 casting, precision I've been looking at a pair of AFR 290 oval heads. 1996 K3500 6. Check it out. ProMaxx supposedly has an exclusive with Steven on "their" heads, so my guess is there is something different about the Flotek head as subtle as it may be. He's been using them for a little The ProMaxx head is a Steven headbut I would not say that all Steven BB Chev heads are "Pro Maxx" heads. “We have a large assortment of heads, from full-blown CNC drag racing heads, down to heads for a 4. Use your phone's camera to search what you see in an entirely new way. i think the promaxx heads would have the nicest valve job. The 185cc series 1 heads are perfect for that budget build. These are the set of ProMax heads I checked out and wrote a post on years ago. Brodix/Profiler/AFR/etc in the larger sizes is where I Looking for opinions/advice regarding Promaxx aluminum heads. Hasn't had a failure yet. 0 I just stumbled across the ProMaxx "Project X" SBC heads on Summit's site. Search by Make/Engine. IK® Series Cylinder Heads/23° Race-Rite® Small Saw a video review on YouTube about a promaxx head. Spring Options: Clear: MAXX 210 BB MOPAR (Sold in Pairs) quantity. 335 Series- 5. Not Yet Reviewed. Yes, the ProMaxx heads are a copy, but so is just about every other head on the market. I review and flow a SBC ProMaxx 200cc head. Im noticing these have better flow numbers than the Tw170 but not sure of their quality. Find FORD 5. With our kit, you Find CHEVROLET 5. Part Number: PMX-9176. Though ProMaxx offered both smaller, This option is NOT available w/ bare heads. The valve cover is easily removed by loosening the bolts holding it to the cylinder head. There are a few more brands out there now, but it doesn't seem anyone ever offers up any definitive proof of how effective they really are. Flow numbers seem to be almost exactly the same as Profiler on intake, higher on exhaust. Joined Apr 11, 2015 · 7,160 Posts #21 · Feb 9, 2021. When replacing the valve cover, check the valve cover gasket to This option is NOT available w/ bare heads. Making great power at a price that cannot be matched. The aluminum head found on GM BBCs is an Edelbrock head w/a GM part #. the deck is the main reason I was looking at heads and no need for 6 bolt heads sense there going on a stock block eric wiengartner took a look at the liberty and promaxx heads at pri and said he was pretty impressed with both he does plan on getting one to check out more closely so hopefully he does that before I’m ready to buy heads ProMaxx Performance Products. If your concerned about the cylinder head, these straight 6 heads are very easy and inexpensive to remove, have machined, and reinstall. The promaxx 72cc heads with the edelbrock ports run approx. the guy had done saw cuts showing the ports and had tested the materail. Features; Flow Chart; Cylinder Head Options; Technical Specs; Additional There is little to no information available about these, especially on Promaxx's website. I've been planning to get the profiler 210 cc but the promaxx popped up and looked very decent for the price. You can stuff boost through most heads, but it skews the numbers. They're generally not going to come very close to the big name heads on the flow charts, but they beat the hell out of cast iron Factory examples. 0L production used cast iron cylinder heads. Ray Best pass 8. You can find the dart clone, yongyu head ( casting afr uses) with 11/32 valves and set up for a flat tapped for around $1k from most local builders though if you check around your area and ask if they sell liberty, rpc or proheader Find PROMAXX Performance Maxx Series Small Block Chevy Cylinder Heads 200cc Intake Runner Volume (cc) and get Free Shipping on Orders Over $109 at Summit Racing! Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. My Car 1972 Mach 1 Q code 2007 GT 1969 Cougar Eliminator B302 CSX 7000 Shelby Cobra FIA With the test heads at the ready, we also prepped a set of stock iron, E7TE (5. Features; Flow Chart; Cylinder Head Options; Technical Specs; Additional information; 180cc Intake runner; Ultra-smooth 356-T6 Aluminum casting; Precision CNC machining; Our ported TFS heads not only beat the larger ProMaxx heads, but at a lower lift AND a smaller intake port volume. I have a pair of the ProMaxx ported versions. Jan 25, 2020 #2 You are a very dedicated glutton for punishment. Went to the ProMaxx site and checked them out, and they seem to be comparable to the Profiler All-American 210 heads. It is not a ProMaxx head unless I'm mistaken. 00. 898bore which is 5. 00 Out of Stock: Quantity Detailed Description: ProMaxx Performance Products, Maxx 290 Oval Port, Chevrolet Big Block Aluminum Heads . After you’ve figured out what your stressors are, you can take steps to reduce or avoid them. mail order Out of the box I'd probably lean to pro max since your not planning on porting the heads and running a flat tapped cam. The CJ heads started casting in early '71, so after January, it would be a crap shoot if they were open or closed without knowing the casting number. So far I've been impressed everything has fit. $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: GETREADY. smokie wrote: ↑ Fri Oct 27, 2023 7:53 pm Just wondering what opinions are on promaxx project x heads? I think they are afr copies, but that 215cc head looks very promising. Freedom Series cylinder heads feature one-piece stainless steel the promaxx are also out of stock, no idea when they will have castings. Get the Best Performance with ProMaxx Performance Project X Bare Aluminum Cylinder Heads for Small Block Chevy (215cc) 9215S parts at JEGS. Use a head gasket to check the dowel locations in the heads and in the block. It is not for the 5. Air & Fuel Delivery; I dyno tested a set of AFR 265, Brodix RR270, and Promaxx 290 heads. Searching here and elsewhere, I can't find anything negative about Flotek. Part Number: N/A Categories: MAXX SERIES, SBC. I was planning to install the promaxx 9175 180cc heads on a DSS 331 and its just a street car, so am wondering if these heads would fit the bill. ProMaxx, Maxx 290 Oval Port, Chevrolet Big Block Aluminum Heads: Item Number: PMX9290 Be the first to review this item: Unit Price: $1,564. No changes were made to the ports of the stock Promaxx Project X 185cc head review for SBF with flow numbers. The GT head is the same as the regular 390 head from the same time, I review and flow a Promaxx Project x 200cc head. GM now uses the Edelbrock designed & produced head(s) & intake(s) for BBCs. I'd say that the pistons most likely differ from factory if sticking out of the hole that far. Home. Sort By Page 1 of 1. com. Manufactured from A356-T6 aluminum. 7. The 200cc looks pretty good too. 6 valves. 800" lift, . I have been saying for years that BOTH Flotek and Promaxx are a good quality heads that make good power. If you do ported promaxx heads the 3xtra as cast heads are about same price. Both Flotek and Promaxx can make big power as well. 0L head. Jason at ProMaxx is a good guy and has been around a long time. 3 These heads can be ported and polished for even more horsepower gains too. The flow numbers seem better than vortecs. they just closed down and Brand New Replacement Diesel Cylinder Heads. I needed a good street performance head for my roller cam 355 that wouldn't break the bank, be too large port wise, or fit poorly. 87 at 150. 00) Maxx 200 SBC (Sold in Pairs) quantity. Usually the aftermarket heads or the dowels in the block will need massaging with a file. Flows very well, the job was done right. I share the results from them. Discover how Lens in the Google app can help you explore the world around you. This is NOT that cylinder head. 6 rockers but everything else has been good. ProMaxx cylinder heads have came a long way in the past few years. The reason for this is aluminum heads are softer than iron and have a higher rate of thermal expansion than iron so to minimize damage to the gasket and the head a The current heads are the old school powerpack heads which from what I've read yield a 138cc intake runner. ProMaxx Performance has the answer for the epidemic of cracked cylinder heads for Cummins 4BT, 6BT, 5. Heads must With replacement heads for the Ford 6. Machined and assembled in the USA. ProMaxx Performance began business by revolutionizing the CNC cylinder head market. Sorry in advance for the wall of text, I'm a little confused about how to choose heads for my build. This is Part 13 of my Ford 331 stroker motor rebuild. These are manufacturer posted specs. Brodix, AFR, Edelbrock, and Trick Flow all make some great flowing oval port cylinder heads. 6-ratio roller rockers in place of the factory units. When you add the cost of working Factory heads versus buying a set of heads like these, it just doesn't make any sense to not go for I was planning to reuse my Gt40x heads but have enough funds for a head change. I am considering purchasing a set of the SBF Maxx 180 cc’s for use on a street 351 W build. 1. 5" Flo-Pro Crossover, Identification of World cylinder heads requires removing the valve cover in order to view the casting numbers. PROMAXX Performance Project X small block Chevrolet cylinder heads have the right stuff to perfectly fit your budget build with abundant power. 100 on the Cleveland vs Hemi ?a more detailed physical view at the Cleveland “canted valve” arrangement & more. The Maxx 190 is the ultimate “as cast” head available that produces CNC type flow number, flowing over 260cfm. Work done in the USA in the great state of Al. Jump to Latest 21 - 32 of 32 Posts. I think both could benefit with a tulip PROMAXX Performance Project X Small Block Ford Cylinder Heads. After looking at the results of this test, the gang at ProMaxx might just have pulled off the hat trick. 400 - 283/197 How well does the promaxx heads match up to the edelbroke performer rpm intake? Do not force it into place. Any opinions. The economical "As-Cast" aluminum versions feature ultra-smooth 356-T6 casting, precision machining, and an array of assembled options Find PROMAXX Performance Series One Small Block Ford Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! PROMAXX Performance Series One small block Ford cylinder heads are affordable, high-flow as-cast versions of fully CNC-ported heads. PROMAXX Maxx Series SBF cylinder heads MAXX 180cc - 9175 https://promaxxperformance. Jump to Latest If memory serves me correctly I believe the Promaxx heads are laser engraved . Developed as a direct bolt-on replacement for fractured factory heads, ProMaxx Duramax cylinder heads are available as a All years of 4. 00) Project X SBC 185 (SOLD IN PAIRS) quantity. 080 clearance on the intake, over . 250 intake. 90' bore engines. ” pro comp heads are high-performance cylinder heads designed for use in racing vehicles. fasterthangas · Registered. 8/351M, 6. That will move the power band higher up, which I don't want. 58cc chamber and 1. tflowheads. The Maxx 290 is truly a rare breed. Even over the GT40 and GT40P heads. PROMAXX Performance Project X small block Ford cylinder heads are one word—awesome! They feature ultra-smooth 356-T6 aluminum casting, 5-angle valve jobs, precision CNC machining, and diamond-honed bronze guides and can make big power in your small block Ford application. Thanks Big block chevy heads are massive to begin with. Identifying the causes of stress in your life is the first step in effective stress management. Identifying a broken sprinkler head is the first step in solving the issue. This head has produced over 5oo hp on pump gas and mild cam . This option is NOT available w/ bare heads. The economical "As-Cast" aluminum versions feature Just go these heads in, machine work looks really nice, the castings are real smooth, very impressed so far. We put these to the test to see if they answer the call and deliver more horsepower. I’ve looked at promaxx 317 rect port heads as well. Not mine. Estimated Ship Date: Jan 13, 2025. Any 4V head with a date 9XXX thru 1Axx is most likely a closed chamber head. Shop Now at the Guaranteed Lowest Price! $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* ProMaxx 9215S Project X Aluminum Cylinder Head Features: I show dyno results from three different heads on the same engine. Compare to any brand, this head makes power!. 320cc ProMaxx heads Tame-ish Solid roller cam Twin S475 turbos Thinking it would be a somewhat "budget" build with enough power to get a full weight car running low 8/ high 7's in the 1/4 while being plenty streetable. 440 or stroker, promaxx wanted a stock look, the 440 source heads. By using a matching hydraulic camshaft, new lifters and Edelbrock intake manifold you can very easily make 400 plus horsepower. 9L, and 6. Are they decent or trash? Any quality issues that would require I just bought a set of Promaxx 180 cc heads with the springs that say good up to . The numbers stamped on the heads are: 9217-185-2010-11-20-1006 9217-185-2011-02-08-0251 No other identifying marks on the heads. Guys tend to focus on peak flow numbers and don't care whether or not it's at . Can't wait to flow them with a 2. With ultra-smooth Grade A 356-T6 aluminum castings that are precision CNC-machined, these small block Chevy heads deliver awesome air speeds with super-efficient chamber designs to produce the power and Free Shipping - PROMAXX Performance 2122SR with qualifying orders of $109. braveshop. i m pretty new on the head porting game . I have 1 3/4 long tube headers and rpm intake with spacer and a quickfuel DP ProMaxx Performance has the answer for the epidemic of cracked GM Duramax 6. 52 intake valve. BTW if your looking into aftermarket performance cylinder heads for the BIG BLOCK CHEVY, the blocks have different coolant passage lay outs, and require matched heads and head gaskets , but check with the manufacturer of the cylinder heads, many of the better aftermarket big block heads have been modified with a larger sealing surface areas and Can promaxx 9183 be used with a solid lift cam and if not what promaxx head can be used on a sbc with the cams. Very nice. I think I originally posted it on Moparts but have shared it here a couple of times. Here's the TFS numbers, out of the box, on a Superflow SF600: Intake/Exhaust. The heads bolt right on and are suitable for heavy towing applications as well. 5L,( "F" Eng #141 cast block) NV4500, crewcab, dually,Diamond Eye 4" Turbo Back Exhaust w/2. 5° Small Block Chevrolet Compatible Heads Menu Toggle. Part Number: N/A Category: MAXX SERIES. 2. 00 Select options This product has multiple variants Nearly all the low priced aluminum heads I can find seems to have 195-205 cc runners. The original head design is often referred to as having a 26-degree valve Scam websites often have very similar URLs and can look nearly identical to the real website. ProMaxx CHR621N Replacement Cylinder Head - 07. Ultra smooth casting made of Grade A 356-T6 aluminum is There are two variants of these cylinder heads, one being the GT40 already mentioned and the other being the Ford GT40P heads. 6L Ford modular engines. Pro comp heads have “pc” branding and casting numbers that start with “pc. Features; Flow Chart; Cylinder Head Options I give a review of the Promaxx CNC ported bbc 325cc head with flow numbers. It's almost impossible to compare them any other way. . Ported Hurricane Single Plane and custom 750 HP. I have a set of these Pro Maxx # 9175 I wanted to try out on my blueprint remanufactured 5. In the long run it is better for everyone. 00 – $ 1,996. Well here is Eric's video comparison between BBc ProMaxx 317 with 2. Step-by-Step Guide to Identifying Broken Sprinkler Heads. Part Number: N/A Category: Project X Series. I guess a better question is how would these heads be out-of-the box on a combo like this. 200 - 159/120. Especially when ported. PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads. 6-10 cfm better on intake and about 5-7 cfm better on exhaust at pretty much all lift ranges. 900" lift, etc. Designed by ProMaxx from an OE casting, ProMaxx improved the casting strength with greater thickness in all crack prone areas. I know that the proper way to fix this is to have the guides punched out, holes cleaned and proper sized guides fitted to the heads. Overview. Seems a lot hear want to not only shit on "china" heads and also group them all together. 7L/350 PROMAXX Performance Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing Gift Cards - Always the Perfect Gift! Buy Now. There is NO AS CAST head on the market that can outflow these heads PERIOD! All performance series heads sold in pairs! Project X SBC 185 (SOLD IN PAIRS) $ 1,069. I also tried different intakes to see how they compare wi Cylinder head identification. Top End Combos; LS Compatible Heads Menu Toggle. a few hundred dollars isn't going to kill me. I think the promaxx heads would perform better on a smaller engine, but I don’t think they’ll outperform a 580 with a bigger head. But very appreciated by your followers. 300 - 233/164. 7 engines. 600 lift. So I started looking into them. Thread starter ValiantRacing; Start date Mar 17, 2018 - ValiantRacing Well-Known Member. 185 probably intake runner? The foundry is a modern, high tech foundry that casts all sorts of different parts. Check for cracks, missing parts, or heads that are not level with the ground. Of all the aluminum cylinder heads on the market trick flow Edelbrock Indy cylinder heads and so Link To eBay Motors. Shop the Best available ProMaxx Project X Series Small Block Chevy Aluminum Cylinder Heads parts at the Guaranteed Lowest Prices! High Performance Parts Delivered Fast. 700"), Pair : Check for Availability: Will be shipped via: ITEM SHIPS DIRECT FROM MANUFACTURER So, my promaxx heads have some pretty bad guide to head leaks and are sucking oil into the intake ports through said leaks. Promaxx Performance continues to evolve with the Project X lineup and has raised the bar on the competition. Taking the affordable performance cylinder head to the next level. Small Block Promaxx Heads. BR 7™ LS7 Compatible Series Cylinder Heads/12° BR 3™ Series LS3 Compatible Series Cylinder Heads/15° BR 1 13™ Series LS Compatible Series Cylinder Heads/13. Would it make just as much sense Our BB Mopar 210 has given the Mopar enthusiasts a great power producing head at a price that cannot be beat. In the low cost heads Skip White's NKB has about the best chamber even the newer ProComps have upped their chamber game a lot. 1 flat tops, trying to ballpark 500-550 crank hp. Find PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! PROMAXX Performance Project X small block Chevrolet cylinder heads have the right stuff to perfectly fit your budget build with abundant power. Only show this user. Check out this 496 Chevy Big Block Engine get tested with Edelbrock Performer RPM Cylinder Heads and Dart Cylinder Heads other cylinder heads are TFS, Brodix, GM and Pushrod, Featured in Car Craft I have experience with just about every head. Edit: When I said small bore I meant 3. The Maxx 317 is truly a rare breed in today’s market. They arent the best heads available but they certainly arent the worst either. Sold 3/2018 1970 SS 396 restoration project in progress. 300 valves. Part Number: PMX-2122SR. They specialize in cylinder heads for small block Chevy, big block Chevy, and small block Ford. Forums. So are these PAC springs and I guess they'll work well with my TFS stage 2 cam? Formerly DAVE94LIGHTNING. The economical "As-Cast" aluminum versions feature ultra-smooth 356-T6 casting, precision machining, and an array of assembled options PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads. Before the TF head for the small block was out, I went with the ProMaxx CNC’d chink copied Edelbrock head. Search Within Department. Only at www. BTW if your looking into aftermarket performance cylinder heads for the BIG BLOCK CHEVY, the blocks have different coolant passage lay outs, and require matched heads and head gaskets , but check with the manufacturer of the cylinder heads, many of the better aftermarket big block heads have been modified with a larger sealing surface areas and If you have 4V heads, that date code will give you an idea of whether they are open or closed chamber. Without tearing your engine down completely. If it is a Chinese clone of the current GM BBC head, then it is an Edelbrock knock-off. S. I did clean up all the ports and have the springs, retainers and locks swapped for titanium roller cam stuff. Link to preorder book:https://weingartnerracing. The only thing I had to do was seat the valve seals , they didn't tap them down far enough . Save Share So the ProMaxx heads will get a back to back comparison. Summit Racing SpeedCard - learn how to get 15% back up to $150 PROMAXX Performance Cylinder Heads 2122SR PMX-2122SR. The fastest VIP (Visual Identification Point) on this head is the mostly rectangular shaped intake ports LS3 Style 11 Degree Chevrolet heads to fit Gen III LS1/2/6 3. would like to ask some of the pro guys to check it out and see what they think of them. Available assembled or bare, these heads feature ultra-smooth 356 T-6 aluminum Detailed Description: ProMaxx Performance Maxx 317 Chev BB Aluminum Heads Made right here in the USA. With ultra-smooth Grade A 356-T6 aluminum Cylinder Heads Menu Toggle. x heads over the years so this is my honest review of the "ProMax" heads Last edited: Jan 25, 2020. 1 2. PROMAXX Performance Maxx Series Big Block Chevy Cylinder Heads. 0L Powerstroke, Cummins and GM 6. PROMAXX Performance Maxx Series big block Chevy cylinder heads are custom designed to satisfy demands of the big block Chevy world, while retaining high-quality craftsmanship and reasonable prices. When selecting a cylinder head, it is better to stay on the smaller side. 5:1 static for 91 pump gas). New posts Recent Posts Search forums. 98 1. these heads are actually patriot clyinde heads. Some of the oval port cylinder heads will out flow and out perform the larger rectangle port heads. 212 60'. 5-18 Dodge (#3977225 - #3977221) Find PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads 215cc Intake Runner Volume (cc) and get Free Shipping on Orders Over $109 at Summit Racing! PROMAXX Performance Project X small block Chevrolet cylinder heads have the right stuff to perfectly fit your budget build with abundant power. 383, 40 over, 11. TLDR at the bottom As I understand, the heads are one of the most determining pieces of the engine in terms of power and torque production, along with the cam and compression ratio (~10. Messages 70 Reaction score 55 Location Henagar, AL. Dyno results show 20 to 35 hp gains over the competition. com/product/maxx-180 I review and flow a SBC ProMaxx 200cc head. 5L, ProMaxx heads are an excellent affordable choice when rebuilding or repairing your diesel engine. The 3/8's pushrods did require substantial clearancing to fit the lowdeck with my mopar 1. 6/400, 351 Cleveland - 351 Cleveland "Aussie" heads. Yes (+ $ 20. Worth messing with? - Okay, right at about 20 years ago, I bought a set of Aussie heads that I wanted to put on my '71 Cougar that has a stock 2V Cleveland. I dont want to do that unless i absolutely have to though. hotrod. lit bglo eje tal qcnl cqmhcg jvyv rdjq iidri cbuk