Sbc promaxx heads review

sbc promaxx heads review PRO ACTION Aluminum Pro Action Cylinder Heads the cornerstone of the RHS line are ideal for a variety of performance functions including hot rods drag racing oval track racing and marine applications. These Flo Tek heads have a long list of high end features minus the hefty price tag. Our products are not manufactured endorsed or sponsored by Ford GM or Chevrolet. 02 quot intake 1. com Get big power on a small budget with BluePrint Muscle Series cylinder heads These lightweight aluminum heads bolt up to your small block Chevy and feature 195cc intake 75cc exhaust runners 64cc combustion chambers and 2. I have the ProMaxx 190cc 64cc combustion chamber heads on my 350. 6 10 cfm better on intake and about 5 7 cfm better on exhaust at pretty much all lift ranges. Horsepower fans know that Trick Flow is all about developing products that provide maximum performance such as the PowerPort 190 cylinder heads for small block Mopar. The 185cc series 1 heads are perfect for that budget build. Jan 14 2021 The Promaxx heads are 600. Monday January 18 2016. Order ProMaxx Performance 185cc Aluminum Cylinder Heads Straight Plugs Small Block Chevy for 841. 050 ich tappet lift with 0. 23 sec in 3200 lbs car 00 obo Dec 26 2018 The SR 71 heads use an 8. 94 quot intake and 1. quot LENGTH FULL SET OF 16 1 PC 4130 CHROMOLY . valve job. 60499. 11. Machined and assembled in the USA. GM Performance Parts GMPP the corporation 39 s high performance arm has just released a new cylinder head that can add as much as 41 horsepower to Nov 13 2008 I dont know about Summits Aluminum heads but i m working on a friends Small Block Chevy and he just brought back parts from Summit in Georgia and the new harmonic balancer is made give you 3 guesses China who would have thought also there Summit good timing set in a white generic box has a made in the U. 2. Cylinder Heads Assembled Cast Iron 64cc Chamber 185cc Intake Runner Straight Plug Chevy Small Block Pair. 080 WALL THICKNESS 5 16 quot DIAMETERUSA MADE. 00. Showing all 4 results. I 39 m very likely going to be running the comp XE282HR cam which has some aggressive lobes. The new discount codes are constantly updated on Couponxoo. 00 No reviews yet Write a Review Write a Review . ProMAXX Cylinder Heads_Chevrolet Small Block_Series One_185cc_Straight Plug_64cc. The Maxx 200 is the ultimate as cast head available that produces CNC type flow number flowing over 280cfm. 300 valves. 900 quot LENGTH FULL SET OF 16 1 PC 4130 CHROMOLY . Edelbrock Bbf Performer Rpm 460 Cylinder Head Assm. Ultra smooth 356 T6 aluminum casting Multi angle valve job Precision CNC machining As an example we have tested a 383ci small block with 9. 00. 080 WALL THICKNESS 5 16 quot DIAMETERUSA MADE. shoot for maybe 500 crank hp rev to 6800 7000 single plane intake 4150 holley 750DP. Trick Flow PowerPort 190 Cylinder Heads for Small Block Mopar. FOR USE WITH A HYDRAULIC ROLLER CAM. 60189. 5 Dodge 6. Speedmaster cylinder heads offer improved power throughout the rpm range for greater throttle response and top end horsepower. You don 39 t need to spend a fortune to get a set of top performing lightweight aluminum cylinder heads for your small block Ford V8. 100 CNC Ported. Show all posts. I had vortec heads before and my car pulled way harder with the promaxx I have 355 sbc Feb 19 2018 ProMaxx is a good value for the money. In Stock. I 39 d like to be able to use the same retainers seals etc. Unported or mildly ported Canfields also make excellent street heads when used with mannerly combinations in the 500 to 550 H P range. Our use of the terms quot Ford quot quot GM quot and quot Chevrolet quot and associated logos are for Small Block Chevy. This head has produced over 550 hp on pump gas and mild cam . Im a machinist I stuck a set of assualt SBC heads on my 6FTx6FTx1FT Rock of ages surface plate that . ProMaxx does all the rest of the finish work in house. If this is for a street car the majority of the RPM will be 1 500 5 000. TREND BRAND. The 185cc series 1 heads are perfect for that budget build. 6 Mar 18 2015. Discussion Starter 1 Feb 8 2017. Promaxx Maxx 183 SBC Cylinder Heads Jan 07 2016 I came across the link below and using the same engine they bumped the power up considerably with heads and a cam swap. 0 out of 5 stars 2 Order ProMaxx Performance 185cc Aluminum Cylinder Heads Straight Plugs Small Block Chevy for 841. 080 WALL THICKNESS 5 16 quot DIAMETERUSA MADE. Jan 13 2021 Re Promaxx 225 heads Post by rustbucket79 Sun Jan 17 2021 8 04 pm We recently finished a stroker 340 with a hyd roller pump gas M1 intake Holley 750 Brawler and PW heads that made 480 HP pretty decent combo that wasn t cheap to build. Milling Decking The heads can be taken down to 60cc. 99 amp FREE Shipping. Shop restoration car parts and accessories at Ecklers. 600 Exhaust Valve Compatible with SBC 283 302 305 327 350 383 amp 400 up to 1986 Set of 2 3. Feb 08 2017 602 Posts. PERFECT LENGTH FOR USE WITH OUR NKB amp PROMAXX HEADS. Dec 23 2015 I came across the link below and using the same engine they bumped the power up considerably with heads and a cam swap. We have custom designed a head to meet the needs of the SBF world while keeping the quality high and the price reasonable. 180cc intake runners62cc exhaust runners1. ProMaxx Performance 9227A 225 Series Aluminum Cylinder Heads Small Block Chevy. WHEN USING A HYDRAULIC ROLLER CAM. You will need to have your valve springs or any new springs that you buy checked for symmetry. Independent flow bench testing shows over 385 cfm with 2. Cylinder Heads. 225cc Intake Ports. We have seen these heads add over. Make sure this fits by entering your model number. This is NOT that cylinder head. 60. These value priced cast iron cylinder heads use modified combustion chambers and high velocity port technology to provide improved performance. The RHS Pro Elite series of CNC ported cylinder heads is designed for racers who want the absolute maximum engine performance. The latest ones are on Jun 14 2021. Max flow figures are in the 335 245 cfm range allowing for 650 horsepower on a naturally aspirated race engine. 64cc Combustion Chamber. 17 PROCLAMATION GREAT SEAL CANADA PROVINCE OF ALBERTA Lois E Hole Lieutenant Governor. Small Block Chevy. 3 822 Posts. b because she is Astrology programmes are shown on many of India 39 s 320 television channels and at Least a dozen stations are devoted entirely to astrology 24 hours a day. It features professionally designed runners and chambers that are meticulously CNC ported. 61649. I have the 200cc heads from him and they have been great . 250 Intake valve and over 400 with 2. The 185cc series 1 heads are perfect for that budget build. All American Aluminum 23 SBC Racing Heads. So I 39 d suggest to say 300 rpm 39 s looser. Dyno results show 20 to 35 hp gains over the competition. Long story short 2 head gaskets in less than a year and rusty rocker arms I 39 m thinking my head is cracked somewhere. Beyond that information it just starts to become a personal chice along with all the other build parameters May 23 2016 Alot of us have used those style heads. These pushrods are made in the USA. 719. Compare to any brand this head makes power 2 NEW GM CHEVY PERFORMANCE 302 350 906 STRAIGHT PLUG IRON VORTEC CYLINDER HEADS. Jun 17 2021 Promaxx 320 bbc heads email protected Big Block Bbc Chevy 454 496 300cc Oval Port Aluminum Heads Assem. NEW AFTERMARKET CAST IRON GM CHEVY PERFORMANCE 302 350 906 VORTEC CYLINDER HEADS. S. Small Block Chevrolet SBC Cylinder Heads available in a large range of valve sizes to suit 185cc 190cc 195cc 215cc amp 225cc Intake port volumes to either a 64cc or 72cc Exhaust port volume. Feb 20 2021 The promaxx 72cc heads with the edelbrock ports run approx. 3 way key crank gear and a nice Showing posts with label ProMaxx Cylinder Heads Reviews. PERFECT LENGTH FOR USE WITH OUR NKB amp PROMAXX HEADS. THESE HEADS ARE SOLD AS A PAIR. I dont know if a person would even feel the difference. On Jegs they were only 773 for the assembled pair when on Summitracing they were 900 something. From innovative design to precision manufacturing . 00. 02 quot 1. One very important upgrade that we perform as Find many great new amp used options and get the best deals for GM 12529093 SB Chevy Cast Iron Vortec Heads Cast 10239906 Pair at the best online prices at eBay Free shipping for many products TREND BRAND CHEVY PUSHRODS 7. Edelbrock Pontiac Performer Rpm Cylinder Head Bare 60589. 600 in Valves 180 cc Intake 64 cc Chamber 1. 75 hp over a set of ported quot E7 quot 5. Making great power at a price that cannot be matched. . Check to Compare. Find helpful customer reviews and review ratings for Flotek Cylinder Head Assembled 2. 1. Featuring powerful port designs that are packed with air speed and unbeatable made in the U. Read honest and unbiased product reviews from our users. WHEN USING A HYDRAULIC ROLLER CAM. Promaxx 2015 Performance Shocker 227 64cc. While packing 270 cfm in the level 1 configuration these heads can support nearly 550 horsepower. 64cc Combustion Chamber. 0 out of 5 by 2 Rated 4 out of 5 by Oldschool69 from Good heads for the price 4 exhaust valve leaking Good looking heads for the money they perform well But I did have a problem with 4 exhaust valve leaking could not get it to seal had to remove it and lap This is the best budget head available for the small block Mopar engine. 00. 0 heads. Independent flow bench testing shows over 385 cfm with 2. Our top end Small Block Mopar Kits take the guess work out of making more power power that you can feel every time you mash the gas pedal. This fits your . The 64cc chambers will increase the compression on a DFW or FLW Files A Package of more than 2925 flow files for use with Dyno simulation programs. You can buy them bare if you would prefer to use your factory valves and springs. Our custom 5 axis CNC machined GM castings make these heads a must have for any performance oriented GM LS series engine. Machined and assembled in the USA. Apr 05 2021 Cylinder heads have a variety of chamber sizes runner sizes valve sizes and other variables you need to make sure will be optimized for the application. They 39 re working good for me but you want bigger runners. 00 cheaper than comparable alternatives but need to make sure that it is a apples to apples comparison. 1996 2004 GT Mustang. Dec 31 2020. Competition 5 angle valve job. Assembled heads feature 21 4N back cut swirl polished 1 piece stainless steel valves. 5 Reviews From 515. These heads provide up to a 65 cfm improvement over the stock OEM versions. . Making great power at a price that cannot be matched. SBC CHEVY PUSHRODS 7. 11 Reviews From 171. The ProMaxx Performance Cylinder Heads are high quality replacements for your 2007. PERFECT LENGTH FOR USE WITH OUR NKB amp PROMAXX HEADS. These heads flow exceptionally well and also make excellent torque at a decent price. 460 in Springs Straight Plug Aluminum Small Block Chevy Each 102 505 at Amazon. Spark Plug 750 quot Reach Gasket Seat. When we decided to sell Aftermarket Performance cylinder heads the decision was easy When performance counts the Promaxx Performance CNC ported Cylinder Heads for the 1999 2004 Lightning Harley Davidson delivers. Review of patriot heads Is the Bible historically accurate ask. We do not sell or recommend any offshore pushrods. runner US made bronze guides and our 5 angle. They are cast of high quality A 356 T6 aluminum and have approximately 3 4 quot thich decks. 1 845. 1 435. Built with thicker castings in crack prone areas these heads undergo extensive testing and quality control to ensure that you receive the best product possible. If you do a little more research you will find that the cracks in these heads are all for the most part EASY fixes by the specialists. An As Cast head that is just as efficient as competition s CNC ported pieces. The only thing I had to do was seat the valve seals they didn 39 t tap them down far enough . They 39 re fully assembled with valve springs retainers locks guideplates studs and seals. O. Shop restoration car parts and accessories at Rick 39 s Camaro. casting technology. More Info Click Here. Intake Ports 185cc. 540 inch valve lift . ProMaxx Contractor Rack. Enforcer As Cast SBC Eliminator 23 Cylinder Head SBF Renegade 20 Cylinder Head LS1 Mongoose 15 Cylinder Head LS3 Mongoose 12 Cylinder Head BBF Bullitt 14 Cylinder Head BBC Magnum 24 Cylinder Head BBC Magnum 18 Cylinder Head Manifolds. I for one can vouch for them . Whether it 39 s circle track drag racing or street performance the Pro Filer All American Series SBC cylinder heads are the solution for your big horsepower needs. GM LS 1 amp 2 Engine. Add to cart. The ProMaxx CHR621N Replacement Cylinder Head for your 2007. A. 1 251. The cylinder head works by allowing the air fuel mixture to enter one valve and the exhaust gas to exit the other. This head will change the industry. 000 BBC Billet Heads SMALL BLOCK CHEVY. Although they scored very well in the article I 39 m finding mixed reviews other places. 7 new Promaxx Coupon results have been found in the last 90 days which means that every 14 a new Promaxx Coupon 6 new Sbc Aluminum Heads For Sale results have been found in the last 90 days which means that every 15 a new Sbc Aluminum Heads For Sale result is figured out. Promaxx 2168 Complete Heads Straight Plugs. I have formatted each cylinder heads information into individual files for use with different versions of DeskTop Dyno DynoSim Comp Cams CamQuest program Dynomation Versions 4 and 5 and Performance Trends Engine Analyzer. com. Part Number PMX 2151. Lance does do the CnC work on those heads. I use them on my forged 383 turbo SBC . 520 0. Dyno results show 20 to 35 hp gains over the competition. S. CODES 6 days ago PROMAXX Performance 2151 PROMAXX Performance Vortec 185cc Iron Cylinder Heads. Price 820. These pushrods are made from beginning to end in the USA by a major pushrod company. AD Performance SBF 175 ProMaxx Cylinder Head 9175 ProMaxx Performance 9175 MAXX Series Aluminum Cylinder Heads As Cast Quick Overview Our Freedom Series heads have started a revolution in the performance world. Edelbrock Bbc Performer Tbi Cylinder Head Assm. 25. 020 Intake Valve amp 1. 185 CC Intake Runner. PERFECT LENGTH FOR USE WITH OUR NKB amp PROMAXX HEADS. Iron Eagle 23 165cc S S Heads Iron Eagle 23 Promaxx 320 bbc heads. Promaxx Maxx 183 SBC Cylinder Heads. The heads tolerances were in better than my equipment capability care to measure. 383. The all new ProMAXX ultra smooth Grade A 356 T6 aluminum casting is CNC machined to create the perfect platform for newly developed runner and chamber designs. TREND BRAND CHEVY PUSHRODS 8. 54 quot swirl polished exhaust valves58cc chambersPerformance valve springs . Big Chief Pro1 18 14 424cc Heads BBC Big Chief 18 424cc 14 440cc CNC Heads BBC Big Chief 14 433cc CNC Heads Oval BBC Big Chief II 11 555cc CNC Heads BBC Big Chief 14 505cc 5. 5 1 compression using a set of 190cc AFR heads a set of 1 3 4 inch headers a dualplane intake and a Comp Cams hydraulic roller camshaft 236 242 degrees of duration 0. Edelbrock Bbm 440 Performer Rpm Cylinder Head Assm. 1988montecarloss said 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. 02 inch intake valve 1 695 are the next step in bolt on performance castings for small block Ford engines that see street and on track Home CYLINDER HEADS CHEVROLET SMALL BLOCK IRON 23 Degree 200cc World Products 011150 Cylinder Head Cast Iron Chevy Small Block SPORTSMAN II 200cc 64cc 23Degree 2. 7. Highly recommend Clearwater Cylinder Heads have purchased two sets of heads for my business totally satisfied with everything I love the fact they do not charge you core they give you 30 days to get the vehicle running and return the cores at their cost this is a great thing we are corms transmissions and Complete Auto Care Monroe City Missouri Canfield Small Block Heads are excellent street performance and race cylinder heads. P N PMX SBC 64S 2169. 7L. 7L Cummins is designed as replacement cylinder heads with thicker castings in crack prone areas. 08 39 39 Intake 1. PROMAXX Performance Cylinder Heads Free Shipping on . Straight Plug. In the mean time I 39 m looking up heads and XDP has a ProMaxx head but for my truck but I cant seem to find any reviews for the 6. Mar 21 2013 Patriot Performance is now PROMAXX and still making high quality affordable performance cylinder heads for first gen small and big block Chevy. PERFECT LENGTH FOR USE WITH OUR NKB amp PROMAXX HEADS. 300 valves. Box 217 New Carlisle OH 45344 Phone 937 846 1333 Email info profilerperformance. I 39 ll definitely be upgrading the springs. 020 1. Ultra smooth 356 T6 Aluminum Casting. As Couponxoo s tracking online shoppers can recently get a save of 17 on average by using our coupons for shopping at Sbc Aluminum Heads For Sale . ProMaxx Performance Cylinder Heads available Big Block Chevrolet BBC Cylinder Heads available in 320cc amp 360cc at different valve sizes. 900 quot LENGTH FULL SET OF 16 1 PC 4130 CHROMOLY . Jan 12 2016 Our latest adventure involves a quick test of eight pairs of small block Chevy heads tantalizingly priced at less than 1 000 to find the best small block Chevy heads on a budget. 60 quot exhaust valves. These are manufacturer posted specs. 250 Intake valve and over 400 with 2. CNC Ported Heads. These pushrods are made from beginning to end in the USA by a major pushrod company. Summit Racing offers three series of PROMAXX cylinder heads Freedom Series Aluminum Heads for Small Block Chevy. 600 Angle Plug Bare Castings Small Block Chevrolet Compatible Heads. What spring fits these heads with around 160 seat psi and 440 open psi. Further testing will determine that soon. I bought them complete for 875 from jegs. Mar 24 2013 Freedom Series Aluminum Heads for Small Block Chevy These assembled heads feature a choice of 185cc 190cc or 225cc intake runners and 64cc or 72cc CNC bowl blended combustion chambers with a Jul 27 2020 Best Small Block Mopar Heads Overview. ProMaxx Performance 2151 Cast Iron Small Block Chevy Vortec Cylinder Heads. This particular 383 made 517 ft lb of torque and 503 hp at Feb 01 1999 GM 39 s New Fast Burn Small Block Cylinder Heads. 850. ProMaxx BBC 317cc Big Block Chevy Cylinder Heads. Dec 31 2020 SoCal. Oct 15 2018 ProMaxx makes a good head it 39 s been discussed a few times over on the SpeedTalk forum which is more of an engine builder head porting specialist machinist frequented board . com. I came across a set of the Patriot now Promaxx aluminum heads mentioned in the write up for 500. 5 and UP Dodge Cummins 6. WHEN USING A HYDRAULIC ROLLER CAM. 60 39 39 Exhaust Valves. A. Item Code. blp226. Iron Eagle. valve jobs for 2. Our kit include everything you need to get the job done quickly efficiently and easily intake manifold cylinder heads camshaft lifters TREND BRAND CHEVY PUSHRODS 7. Machined and assembled in the USA. Making great power at a price that cannot be matched. 225 Series Aluminum Cylinder Heads. 60 quot valves. In some cases we may offer 2 different CNC ported versions such as our Stage 3 ported LA or magnum Edelbrock heads and the BigMouth heads with pushrods moved over to widen the port at the pushrod restriction and increase the port volume. Trick Flow Specialties TFS builds an 18 degree valve angle head for a small block Chevy that still requires an 18degree intake headers and valvetrain but TFS claims the head flows over 330 cfm at 0. Not only that the head will be stronger and last longer. Tim Torrecarion from AFR provides some insight into purchasing heads for your application. This is an all new casting with incredible build quality for the price. The heads fit all non emissions LA and Magnum series 318 340 and 360 engines used through 2003. 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 Cylinder Heads SERIES ONE 185 SBC ALUMINUM . I came across a set of the Patriot now Promaxx aluminum heads mentioned in the write up for 500. Promaxx 2168 Complete Heads Straight Plugs The SBF heads come as cast with a 185cc intake. The Maxx 317 is truly a rare breed in today s market. Brand ProMaxx Performance. 2 NEW GM CHEVY PERFORMANCE 302 350 906 STRAIGHT PLUG IRON VORTEC CYLINDER HEADS quantity. Sold as complete assemblies only. Loc Sumner WA. Although they scored very well in the article I 39 m finding mixed reviews other places. 99 in our huge selection of parts. These pushrods are made from beginning to end in the USA by a major pushrod company. a few of the custom head porters have remarked that it is a quality piece. Combined Cancer Birth Defect. The Maxx 317 is truly a rare breed in today s market. More Info Click Here. Nov 30 2015 Promaxx bought Patriot and sells them still as their quot Freedom quot series. Quick View. Utilizing innovative design features modern engineering methods and precision CNC machining Pro Elite Cylinder Heads are second to none. 080 WALL THICKNESS 5 16 quot DIAMETERUSA MADE BY TREND. You can get the best discount of up to 70 off. An easy way to gain 20 40 horsepower on any 1955 and newer Small Block Chevrolet V 8 except later style LT1 LT4 engines with reverse flow cooling is by installing a set of Vortec cylinder heads. Also what lifters are you running if you 39 re using a Skip White Performance provides many high performance racing and engine products such as stroker engines turn key engines cylinder heads and pistons Call Us 423 722 5152 Login or register Promaxx 200cc Sbc Chevy Aluminum Heads 64cc Combustion Chambers Bare Set 625. 080 WALL THICKNESS 5 16 quot DIAMETERUSA MADE. These heads are fully CNC ported and have our priority racing valve job. This head will change the industry. Promaxx Shocker SBF Modular Performance Stage 2 and Stage 3 Windsor or 2168 ProMaxx Performance Small Block Chevy Aluminum Cylinder Heads is rated 4. This equates to a head that is MORE prone to cracking. These heads deliver more features higher flow characteristics and better finish quality than other competitive Ford Racing 39 s Z heads PN M 6049 Z304DA 63cc chamber 2. SBC Eliminator Gen I Manifold SBF Renegade 20 ProMAXX Shocker CNC Series is the top of the line performance cylinder head. ProMaxx Round Nerf Bars. Power you can hear every time your tires scream for mercy. ProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. These. 020 x 1. LPC Bare Aluminum Performance Series Cylinder Heads are manufactured from 355 t6 High Density Aluminum Designed for Street or Racing engines with substantially increased power. 900 quot LENGTH FULL SET OF 16 1 PC 4130 CHROMOLY . These assembled heads feature a choice of 185cc 190cc or 225cc intake runners and Visit Store JEGS High Performance. Dyno results show 20 to 35 hp gains over the competition. 150. 0006 flat or better . WHEN USING A HYDRAULIC ROLLER CAM. Level 1 porting features a chamber deshroud bowl blending and our competition valve job on both the intake and the exhaust. BRODIX is serious about quality and workmanship at every step of the process. Find many great new amp used options and get the best deals for PROMAXX Performance 2151 Cast Iron Small Block Chevy Vortec Cylinder Heads at the best online prices at eBay Free shipping for many products A Team Performance Angle Plug Aluminum Cylinder Heads 64cc Chamber 205cc Intake Ports 2. These pushrods are made from beginning to end in the USA by a major pushrod company. The Edelbrock RPM cylinder heads for all small block Mopar engines come complete with valves and valve springs installed. Find Parts and Accessories aluminum seat KEYWORD and get Free Shipping on Orders Over 99 at Summit Racing Promaxx Coupon can offer you many choices to save money thanks to 13 active results. heads come standard with a 60cc chamber and. ProMAXX Cylinder Heads MAXX 200 SBC. 300 quot LENGTH FULL SET OF 16 1 PC 4130 CHROMOLY . 00. 600 lift Small Block Chevy Cylinder Heads. We manufacture and sell more aftermarket aluminum cylinder heads than anyone else in the business. PROMAXX Performance 9183 PROMAXX Performance Maxx Series Small Block Chevy Cylinder Heads Cylinder Heads Maxx Series Assembled Aluminum 183cc Intake Runner D port Chevy 302 327 350 400 Pair Aug 01 2019 BBC Race Series 18 330 383cc Heads Big Chief. Definitely compare the 2 websites for best price. 550 lift 115 All American Manufacturer of Racing Cylinder Heads and Intake Manifolds Pro Filer Performance Products P. Maximum output for less money Designed and TREND BRAND CHEVY PUSHRODS 7. 99 in our huge selection of parts. Find Parts and Accessories aluminum seat KEYWORD and get Free Shipping on Orders Over 99 at Summit Racing . only under one hood that i know of that has the true votec heads and tbi setup and it was a 96 g30. An As Cast head that is just as efficient as competition s CNC ported pieces. Free Shipping. Assembled. Sold as a complete cylinder head with valves valve seals springs retainers and locks these new castings are sold without a core charge and come ready to install. Sold as a complete cylinder head with valves valve seals springs retainers and locks these new castings are sold without a core charge and come ready to install. ProMaxx 39 s full CNC port head is quite good as well. The casting are excellent Jan 02 2017 The promaxx heads are built exactly the same way the OE ones were but with lower QC. sbc promaxx heads review