Promaxx sbc heads review

Promaxx sbc heads review. 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 torque you need for the street or strip. Jan 25, 2020. Part Number: PMX-2123 Estimated Ship Date: Jun 3, 2024 ProMaxx Performance Shocker Bare 185 CNC Aluminum Cylinder Heads [Small Block Chrysler] Shocker 185 CNC Aluminum Cylinder Heads. I was planning to reuse my Gt40x heads but have enough funds for a head change. Bare, 2/pkg. First of all, 600hp is the new 500hp, and if a power adder is involved, you’d better be packing 800hp to have any bragging rights at all. 225cc Intake Runner. PROMAXX Performance Maxx Series Small Block Chevy Cylinder Heads 9200 PMX-9200. So far I really like the casting and quality of finish. Forged flat top pistons. The current heads are the old school powerpack heads which from what I've read yield a 138cc intake runner. 500-250, . Click image to zoom. Upgrade Rocker Arm Studs to a 7/16″. 00 – $ 2,500. Part Number:PMX-9186S. 225cc Intake Ports. Small journal engine. 58cc chamber and 1. Intake Ports: 185cc. Brodix specs ARP head-bolt set PN 134-3601 for its Race-Rite 200 head. shoot for maybe 500 crank hp, rev to 6800-7000, single plane intake, 4150 holley 750DP. 300"/1. 600 inch of lift, while the 76cc exhaust runner moves 197cfm at the same lift. ebay. Nov 14, 2018 · Jebchevelle. The bolts go into the water jacket on a production small-block like Price's, so be sure to apply thread-sealant Assembled heads feature 21-4N back cut swirl polished 1 pc stainless steel valves, 3/8 studs and adjustable guide plates Series One 185 SBC (Sold in Pairs) $ 830. Some parts are not legal for use in California or other states with similar laws / regulations. Jul 13, 2021 · 406 SBC head recommendations. View More. Bare Casting. Add to cart. I bought them complete for $875 from jegs. ProMaxx Performance Project X Bare Aluminum Cylinder Heads for Small Block Chevy (185cc) Project X Bare Aluminum Cylinder Heads. 500-inch lift and 18 cfm better on the exhaust side. Pair. It is quite heavy, but it endures very high temperatures. 1K. Find PROMAXX Performance Freedom Series Big Block Chevy Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! PROMAXX Performance Freedom Series big block Chevy cylinder heads offer exceptional quality at an unbelievable price. Valve Spring Lift - . On Jegs they were only $773 for the assembled pair, when on Summitracing they were $900 something. Jun 4, 2023 · Besides, in this case, the 2. My engine builder would toss me out on my ear if I brought him a set of Procomp heads to doctor up. By Len Emanuelson. 300-188, . ProMaxx SBC 225cc CNC ported Shocker Heads Review With Real Flow Numbers. They're available bare or assembled; both feature screw-in studs and large diameter spring pockets. There is no comparison in the market. Valve Angle: 23°. This head will change the industry. 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. Take your 1x Maxx 183 SBC. I have been working on a set of "ProMax" cylinder heads for the past number of weeks. Exhaust Runner - 72cc. Don't know him but some here do. Freedom Series cylinder heads feature one-piece Feb 19, 2018 · ProMaxx is a good value for the money. Jun 25, 2017 · 145 posts · Joined 2014. Part Number: PMX-2256 Estimated Ship Date: Jun 4, 2024 MAXX quality and MAXX performance at minimum pricing - ProMaxx Performance. 08" Exhaust Valve Size - 1. There are so many good cylinder heads around from Dart, World, Trick Flow just to name a few, at a good price. 180 cc Intake Ports. The 185 Vortec has taken the Vortec head to the next level. MAXX 290 BBC(Sold in Pairs) MAXX 290 BBC. Intake Valve Size - 2. Int. Cylinder Heads, Project X, Aluminum, Assembled, 64cc Chamber, 185cc Intake Runner, Chevrolet, Small Block, Pair. The whole thing is a joke complete with requisite dyno disclaimer. The ProMaxx Performance heads promised two things we love: plenty of flow and affordable pricing. 575" Hydraulic Flat Tappet Spring Pressure Sep 24, 2014 · Promaxx is Patriot Performance. Not Yet Reviewed. Features. These heads flow over 325 cfm to easily support 725-plus horsepower. Maxx 200 SBC(Sold in Pairs) Maxx 200 SBC. These heads are very ch PROMAXX Performance goes one up with their Vortec 185cc iron cylinder heads. Get the Best Performance with ProMaxx Performance Project X Bare Aluminum Cylinder Heads for Small Block Chevy (215cc) 9215S parts at JEGS. Gas prices somehow have me thinking this is a good idea. 600-251 Sep 18, 2020 · ericnova72. #17 · Aug 23, 2019. 00. A. The XXTREME Series is our newest line performance cylinder head. This combined with our 5 angle competition valve job, diamond Dec 1, 2016 · 572 BBC-ProMaxx Heads Big motors make big power, and nothing thumps out power like a big-block Chevy, except an even bigger one. These assembled PROMAXX 320 BBC aluminum cylinder heads for 1966-2000 big block Chevy V8 engines will help you shave weight on a budget. Vortec Iron, Scoggin-Dickey Modified PN SD8060A2, $779. 6K subscribers. Stupid comparison. Our new swirl designed chamber is the difference. Project X 215 SBC Bare: Straight: 64: 2. JEGS Intake Manifold Bolts 555-83201. The Maxx 200 By flowing over 280cfm through a 2. It was down 20cfm @ 28". #3 · Jun 25, 2017. Sep 26, 2016 · 45 Photos. 2 days ago · 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 torque you need for the street or strip. ProMaxx Performance 225 Series Aluminum Cylinder Heads Small Block Chevy. Part Number: PMX-9200 Estimated Ship Date: Monday 3/25/2024 May 1, 2023 · On the plus side, the Vortec intake port flows 42 cfm better than the stock heads at 0. Forged internals. The new SBC heads and the new FE head are both very nice pieces. (Sold in Pairs) $925. Estimated to ship direct from manufacturer on 03/26/24, pending manufacturer availability. 08''/1. Jan 27, 2020 · 7,541. Estimated Ship Date:May 29, 2024if ordered today. #1. The Maxx 290 is truly a rare breed in today’s market. Like. $5 Off Your $100 Mobile App Purchase - Get the App Shocker 210 SBF CNC. Mar 18, 2024 · Free Shipping - PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads with qualifying orders of $109. The new swirl designed chamber is the difference. 00 – $ 2,580. 100% CNC Ported. $5 Off Your $100 Mobile App Purchase - Get the App ProMaxx Performance 225cc Aluminum Cylinder Heads Small Block Chevy. Spring Options. $1,415. com. Maxx 190 SBC(Sold in Pairs) Maxx 190 SBC. Subscribe. Other thing is, the 317 ProMaxx is a copy of the American AFRbeing compared to the AFR Enforcer which is a generic "everyone sells one" inferior Chinese BB Chevy head. 190cc Aluminum Small Block Chevy Cylinder Heads. (Sold in Pairs) $ 979. 300 valves. ProFiler as-cast airflow rates rival the CNC street ported version of the AFR head, putting those two at the top of a flow test comparison list. ProMaxx Small Block Chevy Vortec 185cc Cylinder Heads 723-2151. 200-133, . They make the best small block heads out there IMO. 00 – $ 1,525. 20 lbs. 26 X 8. Our new ultra smooth casting made of Grade A 356-T6 aluminum is precision CNC machined to create the perfect platform for our new runner and chamber designs. Maxx cylinder heads feature 5-angle competition valve jobs, diamond-honed bronze guides, and hand bowl Project X SBC 185(SOLD IN PAIRS) Project X SBC 185. It features professionally designed runners and chambers meticulously designed in the U. (SOLD IN PAIRS) $ 1,069. 00 lbs Intake Runner - 225cc Exhaust Runner - 62cc Intake Valve Size - 2. $5 Off Your $100 Mobile App Purchase - Get the App Product images may differ from actual product appearance. 00 lbs. Apr 15, 2022 · I do a review of the AFR Enforcer SBC head. They are cast of high quality A-356-T6 aluminum, and have approximately 3/4" thich decks. 02". Straight Plug. Weight - 55. Project X. I review the SBC Promaxx 225cc cnc Promaxx Project X 200cc Head Review With Real Flow Numbers. Porting is equivalent to other companies more expensive port work. The Maxx 317 is truly a rare breed in today’s market. Beyond that information, it just starts to become a personal chice, along with all the other build parameters Project XSeries. Exh. Subtotal $925. Will make over 500 hp in a pump gas 383. Lowest Price Guarantee. 383. (Sold in Pairs) $ 1,792. May 17, 2020 · We review a set of budget performance small block ford heads May 4, 2017 · Aluminum SBC Cylinder Heads. 7's, full exhaust, 5spd. JEGS Intake Manifold Gaskets 555-210003. Exhaust Valve Size - 1. The SBF Maxx 180 is an as cast head that beats the competition. 100 on the exhaust, ran 11. 50-15 M/T slicks. 78 Malibu, 402 B&M 174, eddy heads, 232/236@. They feature ultra-smooth 356-T56 aluminum casting, and professionally designed runners and chambers that are meticulously CNC-ported. Jul 12, 2020 · First off this is a 327 sbc. 0 HO shortblock with stock replacement pistons, FTI 223/227 @ . 750-inch-thick deck, it has the raised valve cover rail, and is milled so you AFR - Airflow Research 1006 - 1006 Fully Assembled 195cc En (1) $593. Dec 3, 2020 · vrm71. This option is NOT available w/ bare heads. 99. Small Block Ford. 2. The MAXX Series is taking the affordable performance cylinder head to the next level. Feb 4, 2020 · Like AFR’s other SBC cylinder heads, the Enforcer is available in both straight and angled-plug configurations. 00) 1x Project X SBC 185. 050 598/610 lsa112, 5200 stall, th350, sniper, 9" with 3:70's. 900-inch bore,” says Collins. Intake Runner - 185cc. (Sold in Pairs) $ 822. PROMAXX Performance Freedom Series Big Block Chevy Cylinder Heads 2256 PMX-2256. 00 – $ 1,357. 22500 posts · Joined 2007. MAXX Series Aluminum Cylinder Heads. (SOLD IN PAIRS) $ 1,266. As-Cast. 58. PROMAXX Performance Project X small block Chevrolet cylinder heads have the right stuff to perfectly fit your budget build with abundant power. 00 – $ 1,964. 02'' Intake / 1. It was up to 234 cfm @ 45". Part Number: 9183 Categories: SBC, MAXX SERIES. The Maxx 171 SB Mopar heads have finally given SB Mopar enthusiasts a choice. This new foundry that ProMaxx is working with makes nice stuff from everything we have been sent. Subscribed. 08/1. 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. Published: May 4, 2017. Engine runs great and not looking for new heads, but I was looking at the AFR 195 Enforcer heads. Promaxx Performance continues to evolve with the Project X lineup and has raised the bar on the competition. $979. 450 ft/sec across the roof sounds smooth no turbulence. 25 valve vs. 550" mechanical roller up to . I have a set of these Pro Maxx # 9175 I wanted to try out on my blueprint remanufactured 5. #1 · May 23, 2016. Jun 4, 2015 · 185cc Aluminum Small Block Chevy Cylinder Heads. Reviews. Sporting no less than 572 cubes, this BBC stroker needed plenty of airflow to feed all those extra inches. Flowing over 325 CFM these heads will support big cubic inch and big horse power easily over 725 horsepower. Weight per Pair - 55. #1 · Mar 5, 2019. May 20, 2020 · This video reviews the Promaxx Performance Freedom Series aluminium cylinder head that you can buy from outlets such as Summit Racing. It requires no special components. BIG difference. Small Block Chrysler. 020" valve, The MAXX 200 SBC produces awesome air speed on the intake side coupled with a D-shaped exhaust port and super efficient chamber design produces MAXX power for the street or strip. Kit Part Numbers. Vehicle Fitment. Series. 155 piston, 1/16, 1/16, 3/16 rings. They also offer these heads bare. They're working good for me, but you want bigger runners. Valves w/8mm Stems. Nov 30, 2015 · Promaxx bought Patriot, and sells them still as their "Freedom" series. 400-226, . Mar 5, 2019 · aaks38 Discussion starter. Compare performance and price and you will see it is no contest. PROJECT X SERIES LS XXTREME SERIES SHOCKER Jun 28, 2022 · I review promaxx project x 185cc head and flow it. ProMaxx's full CNC port head is quite good as well. Has a summit 1107 camshaft. Q & A. Part Type: Cylinder Head Application: ProMaxx Maxx Series Chevrolet Small Block Cylinder Head Material Aug 9, 2002 · This head is a brand new piece from a brand new source. Manufactured from high-quality aluminum, they are assembled with the finest components. Going fast doesn’t have to break the bank, so get a pair of XXTREME Series Heads today. Dec 16, 2019 · To that end, ProMaxx has two unique cylinder heads on display which are far from cookie-cutter. #18 · Feb 8, 2021. Free Shipping. It not only out performs the competition; it is at a price that Mopar owners cannot believe. Cast Iron Small Block Chevy Vortec Cylinder Heads. Dec 5, 2020 · MAXX 290 BBC (Sold in Pairs) - PROMAXX Performance Products. 700" lift), 7/16" screw-in studs and guide plates. (Sold in Pairs) $ 1,415. 6: 9216S: Project X 215 SBC Hyd Flat Tappet Performance Cylinder Heads. Tested with tri-y headers and full exhaust system @28" and 45". 600" Lift / 28" Intake Port Location: Standard Sep 13, 2022 · I give real flow numbers and review the Promaxx BBC 317cc head. 880" stainless steel valves, HP valve springs (dual 1. They're machined from high-quality aluminum and most come assembled with the finest parts (bare heads are also available). MAXX 317 BBC(Sold in Pairs) MAXX 317 BBC. I should probably stick with junkyard LS engines but I'm thinking about a budget bigblock 454 build. With ultra-smooth Grade A 356-T6 aluminum castings that are precision machined, these small block Ford heads deliver awesome air speeds with super-efficient chamber designs to produce the power and torque you've sought for your setup. Estimated to ship direct from manufacturer on 06/06/24, pending manufacturer availability. Kicking around cylinder head options for my 351w project, which head is better for a stock displacement pump gas 351? Won't spin it past 6000rpm, want good torque and midrange. Will be hyd roller with cam TBD and running AFT Titon dual-plane Aug 20, 2019 · 1259 posts · Joined 2015. the 2. Spark Plug: Straight. Save up to 10% on the Powersports Parts you Need! 2 days ago · Maximum quality, maximum performance, and minimum pricing—PROMAXX Maxx Series SBF cylinder heads take affordable power to the next level. Free Shipping - PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads with qualifying orders of $109. Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. AFR . hot rod magazine were pretty happy with the 180cc version on a milder sbc they built Find PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! PROMAXX Performance Freedom Series small block Chevy cylinder heads offer exceptional quality at an unbelievable price. Shop Cylinder Heads at Summit Racing. the promaxx heads are 1300 shipped to my door with the Mar 6, 2021 · I just built a 355 with ProMaxx Maxx 183 heads. The 195cc intake runner flows 251cfm at . 80 with them Saturday. It allows you to change the compression ratio to reduce fuel consumption and bring more power to V8 engines. Fully CNC’d runners and chambers designed and ported in the USA. But, if you can afford AFR heads I would get them. 050 cam, mine had . 843 posts · Joined 2017. $5 Off Your $100 Mobile App Purchase - Get the App I review and flow a Promaxx Project x 200cc head. $1,022. Maxx 180 SBF(Sold in Pairs) Maxx 180 SBF. PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads 2123 PMX-2123. $2,455. Independent flow bench testing shows over 400 cfm with 2. Location. What it all means - probably not much. Go out and shock the competition. 239 posts · Joined 2002. This is the first set of this brand I have had to work on so I thought I would make public some of my findings. 4K subscribers. Couple that with a state of the art NEW casting and you have a home run. At PROMAXX, we provide our XXTREME series at prices that make our competition cringe. OK, we've done some of these in the past and trying to figure out the my sizing. Eric Weingartner. Maxx 171 SB Mopar(Sold in Pairs) Maxx 171 SB Mopar. I have 1 3/4 long tube headers and rpm intake with spacer and a Oct 2, 2019 · 370-350ft/sec across the roof with short 1 5/8 pipe, Test velocity to 45". These PROMAXX Performance Freedom Series rectangular port 320cc intake runners with hand-blended valve bowls are good for the street or strip. 00 – $ 1,512. Bare AFR 315 cnc Casting with seats and guides weighed 31. Technical Specifications and Recommended Components:Combustion Chamber - 64cc Weight - 55. (Sold in Pairs) $ 937. This is NOT that cylinder head. 41K views 1 year ago. The 190 SBC is our 183cc runner head that has been CNC ported to match a 1206 Felpro gasket to pick up flow numbers for that little extra. Combustion Chambers: 64cc. I got a set i might use but would want 90 lbs minumum. 225cc Aluminum Small Block Chevy Cylinder Heads. It is made of high quality with an aim to greatly improve performance of motors. It puts out up to 20 hp over the competition. Flowing over 328 cfm through only a 210cc runner will make the power you need from your big cubic inch small block Ford. Assembled with 2. They did a test a while ago and the Patriot 185cc heads actually made more power than the Dart SHP 200cc heads. Small Block Chevy. Call and ask the man him self. Sold as pairs. blp226. Product Q&AView Now. I will be running a stock 302 block, explorer intake, stock cam with 1. 64cc Combustion Chamber. JEGS Cylinder Head Bolts 555-83400. Share. Yes (+$ 20. JEGS Vortec Intake Manifold 555-513002. 00 – $ 1,565. Perfect for Street, Strip, or Oval Track Applications, these heads are machined with large diameter spring pockets to handle higher lifts than stock while being drilled for both Vortec and carbureted intake patterns. Exhaust Runner - 62cc. 52 intake valve. Not what Promaxx instructs. 00 – $ 2,292. This head will make BIG power in your SBF application. Like both of the other small-block options, the SBC variant features 2. 30 is much more significant. Part Type: Cylinder Head Application: Chevrolet Small Block Cylinder Head Material: Aluminum Project X SBF 210. A lot has changed in the performance cylinder head market since my last head story in EB in 2010. 30 over. Sep 29, 2015 · Here's what we found: Bare ProMaxx Casting as cast w/seats and guides weighed 31. 60'' Exhaust Valve Sizes. 00 – $ 1,996. Seats Installed for: 2. Get superb out-of-the-box performance, without emptying your wallet, when you order PROMAXX Maxx Series small block Ford cylinder heads. Technical Specifications and Recommended Components: Combustion Chamber - 64cc. I had never seen them before. Edelbrock 5089 is another nice aluminum head for small Chevy engines. Technical Specifications and Recommended Components: Combustion Chamber - 72cc. View Details. MAXX Series Bare Aluminum Cylinder Heads. JEGS Cylinder Head Gaskets 555-210041. Get the Best Performance with ProMaxx Performance 183 Series Aluminum Cylinder Heads Small Block Chevy Straight Plug 9183 parts at JEGS. 60" Max. The Shocker 225 CNC is the ultimate 23 degree small block Chevy head. May 31, 2022 · 0:00 / 20:30. Small Block Chevy Vortec Cylinder Heads. 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 May 23, 2016 · 316 posts · Joined 2009. (Sold in Pairs) $ 950. This head has produced over 550 hp on pump gas and mild cam . 63 cc Chamber Size. Stuff with no moving parts is generally decent Details. “It has an LS3 runner that will fit on a 3. 60cc Combustion Chambers. Will be going in a full weight 1978 Z28 with M21 for my wife to drive. 27. “It’s got a . The absolute best CNC value PERIOD. CNC and larger port versions coming soon. 406 Gm block, Scat 3. 60". 225 Series Aluminum Cylinder Heads. There is NO AS CAST head on the market that can outflow these heads PERIOD! We have done our homework and produced what we believe is the best as cast head-on at an affordable price. The first is an LS3 head, designed to work on small-bore engine combinations. (Sold in Pairs) $ 1,564. Cylinder Head Options. 63cc Combustion Chambers. Mar 11, 2015 · I have the ProMaxx 190cc, 64cc combustion chamber heads on my 350. Pauline, SC. Details. $5 Off Your $100 Mobile App Purchase - Get the App The Maxx 200 By flowing over 280cfm through a 2. I don't know where these are really produced and I'm not going to guess. The economical "As-Cast" aluminum versions feature ultra-smooth 356-T6 casting, precision machining, and an array of assembled options, as well as being available bare. 00 – $ 2,879. Application: Chevrolet Small Block Cylinder Head Material: Aluminum Bare or Assembled: Assembled Combustion Chamber Size: 64cc CNC Machined Combustion Chambers: No Intake Valve Angle: 23 Exhaust Valve Angle: 23 Intake Port Volume: 183cc CNC Machined Intake Port: No Intake Port Flow: 250 cfm @ . An As Cast head that is just as efficient as competition’s CNC ported pieces. 020-inch stainless intake valves and 1. Max. I review and flow a Promaxx Project Mar 18, 2015 · 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. Flow Chart. Might just use the older RPMS and torque to 110lbs for nitrous use. ProMaxx is working on an Oval Port head in the 280cc range, a 337cc, and 367cc. Chad sells them so he should now for sure. 9 lbs. Maxx cylinder heads feature 5-angle competition valve jobs, diamond-honed bronze guides, and hand bowl blending. Shop Now at the Guaranteed Lowest Price! JEGS Friends & Family Sale - Save Big on 10,000+ Products PROMAXX Performance Shocker Series small block Chevy cylinder heads are as good as it gets for 23-degree performance heads. 10K views 1 year ago. 171cc Intake Ports. 4 out of 5 stars. 60'' Valves. Hydraulic flat tappet off the shelf cam, long tubes and Victor JR with a carb. The heads feature one PROMAXX Performance Project X Small Block Chevrolet Cylinder Heads 9186S. /1. Mar 1, 2017 · ProMaxx 2169 Technical Specifications and Recommended Components: Combustion Chamber - 64cc. I got to looking at the advertised flow numbers for the AFR's. 30. The Maxx 200 is the ultimate “as cast” head available that produces CNC type flow number, flowing over 280cfm. The Project X 210 Ford is in one word “AWESOME” over 319 cfm in an as cast head is unbelivable. Bigger runner and bigger valves mean more power! Just ask dirt track racer Shawn Guffey, who has won every race and back to back track championships since installing Vortec heads on his A Hobby ride. 75 crank, 6" 4340 rods Wiseco Flat top 4. S. Assembled. 080 clearance on the intake, over . Not my personal best , but first Series One 185 SBC Cast Iron. Jul 23, 2022 · AFR Enforcer 185 VS Promaxx 180's. Don’t let the size fool you, flowing over 260 cfm, this head makes real power. Definitely compare the 2 websites for best price. Last edited by Stig; 09/24/14 09:18 PM . . 60 in. 225cc Aluminum Cylinder Heads. 2 days ago · Free Shipping - PROMAXX Performance Freedom Series Small Block Chevy Cylinder Heads with qualifying orders of $109. They say 80 lbs on the newer ones, the older ones had cracking issues at the bolt holes. I believe in spending my $$ once whenever I can. I think it's safe to say there isn't a lot of material "missing" in the ProMaxx head. Im noticing these have better flow numbers than Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series SBC cylinder heads take affordable power to the next level. ProMaxx Performance Small Block Chevy Vortec 185cc Cylinder Heads feature an all-new cast iron casting. The Shocker 210 CNC SBF heads are tops in the industry. This is an all new casting, with incredible build quality for the price. Popular with street/strip enthusiasts and Circle Track racers, PROMAXX designed these heads to work well on 350-383 applications. 08'' Intake / 1. Looks like going over some iron factory oval ports will set me back almost as much as some Chinese aluminum heads. Nov 8, 2020 · Find many great new & used options and get the best deals for FORD 289 302 347 NKB-190cc ALUMINUM HEADS 62cc NKB-FORD-274 at the best online prices at eBay! Free shipping for many products! www. Intake Runner: 185cc. All offshore made, some is decent, some is not, you have to be the quality control person on all of it. Intake Runner - 190cc. #2 · Sep 18, 2020 (Edited) ProComp changed their name to SpeedMaster a few years back, but still uses the ProComp name and PCE part numbers on some stuff. 02 in. lh kx nl ov po ah pg fb pl iv