Rhs cast iron heads. - 11/18/0901:54 AM Cut the spring pads down .

Rhs cast iron heads I have a gm shortblock that I would be Jan 22, 2009 · I may be changing my mind about using aluminum heads on my 351 build. 0- 386 375 273 Other head INT Long Short . 7- 395 362 249 . So if youare in the market for a superior-performing cast iron cylinder head, remember that RHS Pro Torker Vortec heads delivers the ultimate in high-quality, high-flow technology. I didn't test them after the valve job, felt it wasn't Cylinder heads are one of the most important components in your engine build. If they ever decided to an aluminum version of these Pro Torker heads (170cc) I'd buy them in a minute. Compression will be 10. These heads must be ported and valve jobbed. Lots of racing classes mandate iron cylinder heads and frankly, these puppies will probably outwork the lower-end aluminum stuff all day long. speedwaymotors. RHS Pro Action Bare Chevy Cast Iron Head, Angle Plug, 200cc/50cc made by RHS, for as low as $349. 60s with J heads Re: Some info on the RHS cast iron heads plus port work [Re: AdamR] #529449 11/18/0906:57 PM11/18/0906:57 PM Joined: Aug 2007Posts: 498 El Dorado Ca 6 65signet mopar 65signet mopar 6 Joined: Aug 2007 Posts: 498 El Dorado Ca Great info, it will be interesting to see how they work in the car 1965 Plymouth Barracuda 273 M/SA 1970 Plymouth Duster 360/904 10. 2:1, solid cam (256-260 . 600 In Valves - 235 CC Intake - 64 CC Chamber - Iron - Small Block Chevy - Each Categorized under: · Engines and Components » Cylinder Heads and Components » Cylinder Heads Jul 21, 2011 · Do you guys think the heads a more crack resistant now that RHS is casting them? Just wondering since im working a set of rhs pro topline cast irons for my motor and always hear stories of the original heads cracking alot. 99. 9- 386 368 268 1. This is a cast iron direct bolt on replacement for your 906 -062 engine. The Thunder heads are a tremendous performer for Chevy Big Block-powered street, drag race and powerboat applications. Jul 19, 2006 · Another good option, (based upon air flow numbers), is the cast iron heads available from Racing Head Service, (RHS), as they flow a lot of air however, I don't personally know about what power they make. Jan 30, 2016 · I have 2 sets of the cast iron raised runner heads--one set as cast and one set as cast with CNC chamber. RHS Pro Action Heads for 289-302-351W These small block Ford heads from Racing Head Service are the ones we use on our all-out vintage road race engines that make 560+ horsepower at 8200 RPM - a superb choice for racing classes requiring iron heads only. 550" lift. CNC combustion chamber, 45 degree valve seats with valve job done. For big block Chevys, these aluminum heads are great for engines being built for drag racing thanks to their excellent list of features. Add 15-30 hp to your engine while retaining a stock-looking port. E. Jan 10, 2023 · World contributed the lone cast-iron head to our Ford small-block test. 590/600 net on 1 Clevite MAHLE Cylinder Head Gasket Right Ford Products V6 3. It's a 408 he had built before he knew of me. heads but, a slightly better version. Mar 14, 2010 · C3 Tech/Performance - Heads for my 383ci - Hi Few of you may know that I am trying to build a 383ci for my 1980. Standard port 23° head Accepts standard Chevy rocker arms and valve train components Advanced port/runner/chamber design & modified water jacket for optimal performance & added rhs cylinder heads | Speedway Motors, The Racing and Rodding Specialists(4) Material Type: Cast Iron Finish: Natural Combustion Chamber Volume: 64cc Mar 28, 2009 · InterestingI didn't know that RHS had produced these heads in any number. Would prefer RHS or World Victor Jr. The 702 has great low lift flow and I plan to do work on that head just to see what it will do. 708 Plug comes really far in the chamber. Mar 31, 2010 · The engineers at RHS have recently designed a new head for the Small Block Chevy. Sep 8, 2005 · I would love to hear the story about RHS and how they are casting new CAST IRON cylinder heads. RHS no longer produces anything which is cast iron. I was putting a SBC into a 2500 lb car and wanted iron heads to kepp cost right and not have to buy some 3000 dollar trans. May 20, 2009 · For racing classes that mandate cast iron head use, RHS has designed a race-winning cast iron head that utilizes the latest in cylinder head technology. Find many great new & used options and get the best deals for Pair RHS 11301 24-degree Pro Action Cast Iron Cylinder Heads Big Block Chevy at the best online prices at eBay! Free shipping for many products! Mar 15, 2011 · Re: bbc iron heads by pullinman » Tue Mar 15, 2011 2:33 am I know there are plenty of head porters out there but for this year I am looking for the best "AS" cast head for this application, dart 308, 345's, rhs 320 360's merlin 345's ect I will do the good heads next year just looking to get it going this year. Was one of the best unported heads ever completed. With all of the other sb chev aluminum heads available today, like was already listed, it's made cast iron obsolete. 500 lift. Working with their patented Clean Cast Technology, they were able to come up with a head design that rivals many CNC-ported heads. RHS™ Pro […] Dec 18, 2015 · Hey guys! I've been searching and searching but I haven't come up with much. photo courtesy RHS Aftermarket cylinder head choices abound for builders of small-block Chevy engines these days, but not everyone is looking for high-zoot aluminum castings, especially for mild street performance or truck projects. At this point I'm looking at World's Roush head, RHS 215cc 58cc, and possibly fords n351. 900 lift, both ports flow over 380 at . This was a hyd. Utilizing innovative design features, modern engineering methods & precision CNC machining, Pro Elite Cylinder Heads are second-to-none. While the pro Top Line heads were an innovative design improvement to the cast iron head world they did have some issues that needed to be fixed. they have 2. Dec 28, 2010 · Has anyone here flowed the RHS cast iron, 170cc, 2. 900 lift, bad runner went 449 at . Shop Performance Auto Parts in-stock with same-day shipping. The exhaust flows 325 at . The heads recieved NO porting whatsoever, not so much as a "gasket-match". In Oct 20, 2010 · For racing classes that mandate the use of cast iron cylinder heads, RHS ® has designed the ultimate advantage by utilizing the latest in airflow technology. Don't expect them to become anything else. Feb 1, 2007 · 12320IS. 0/302, 5. What I'm doing is porting them heavy, beehive springs, 8mm stem valves. PORTED & POLISHED SBF DART IRON EAGLE 180 CC CYLINDER HEADS - $1404. 500" fixture and BEFORE the valve job was finished, the numbers here were "from the box to the bench". Jul 19, 2006 · Cast-iron heads are also heavier than their aluminum counterparts. racingheadservice. The first is designed for engines that are 468-540 cubic inches and features a 339cc intake Summit Racing | Aftermarket Parts & Accessories, Performance Oct 27, 2025 · RHS 14 degree cast iron heads. Quite a different intake port design. photo courtesy RHS In an effort to provide a high-performance Mopar small-block cylinder head for budget-minded enthusiasts, RHS has joined forces with Indy Cylinder Head to develop the 360X cast-iron heads. After searching around, I've found a few options for my 355 sbc (dirt track motor) #1: GM Vortec heads --> Pros: GM quality control Feb 4, 2013 · We have developed CNC ports for these cast iron heads. The engine makes power from 4800 to 6700, pulls to 7200 in high gear. 02/1. Any SOLD AS A PAIR The Pro Action™ 14˚ Heads offer the largest volume runner of any SBC iron cylinder head on the market at 235cc with the capability to be sized up to 285cc. 300 thick before machining so plenty of material unless you port too much below them in the bowl's roof!! Mar 21, 2020 · RHS also wanted to design a head that would share many of the same great qualities of the Pro Elite heads, but in an affordable as-cast design. com 12320IS. 00 (Spring 1. I also found 2 of the Edelbrock matching intakes 2949. I'm pretty much only looking for 350 hp as that is all my current EFI components can handle (75mm MAF and 24lb injectors) and I think that will move my 4200lb truck easily. i. 8- 378 360 261 . Application is dirt track 393 ci, solid roller , race gas. Feb 18, 2009 · The high-perf/low-cost 360X cast-iron cylinder head is the result of a joint effort between RHS and Indy Cylinder Heads. Port location and rocker stud alignment and push rod clearance issues have been more or less corrected. 33 Product Overview Cylinder Head - Pro Action - Bare - 2. . Sep 13, 2021 · Hello all, I'm looking for a set of cast iron heads for a vintage race engine I'm putting together. Jan 8, 2010 · Thankfully, Racing Head Service (RHS) and Indy Cylinder Head have teamed up to develop the new 360 X line of cast iron cylinder heads, offering several distinct advantages over factory designs. PRO ACTIONTM SMALL BLOCK CHEVY 23° Pro ActionTM Cylinder Heads deliver exceptional out-of-the-box performance gains for all Small Block Chevrolet applications. B. Dart’s Iron Eagle cast iron big-block heads are designed for street performance, bracket racing, oval track competition, tractor pulling, and high-performance marine applications. Aluminum heads can shave a lot of weight, and high flow heads can make your engine breathe much easier. I need a 54cc chamber. Features a 69cc combustion chamber available bare or fully assembled. RHS Pro Torkera" heads deliver the competitive edge in racing classes where iron heads are required. The RHS had a much Sep 1, 2009 · All Dart heads are cast and machined in Dart’s own Detroit area facility. . 1- 70 68 . We still run them in some circle track stuff, and also jr. Another option is the "N352" head from FRPP using a B. Have as cast intake runner 235 cc. Home Order Form RHS Racing Head Service Cylinder heads, intake manifold, stainless steel valves, Blocks & other parts. The heads aren't for sale, I was mainly interested in locating people who had experience working with these heads especially the iron versions. 2. 3 We used heads just like these as we sell them to build 485HP out of a BUDGET 410 stroker for Car Craft magazine in the June issue. Keeps the BBC iron topline/RHS in business for sure. if you want to save some $$$ with stock ported heads and still make respectable power than this might be your answer. 590/600 net on 1 Re: Some info on the RHS cast iron heads plus port work - 11/18/0901:54 AM Cut the spring pads down . Also manufactured by RHS are Pro Action heads for small-blocks. Feb 1, 2007 · 12334IS. When we modify cylinder heads, even with the valves removed, it resembles a stock head! Jan 15, 2008 · Small Block V8 (221, 260, 289, 5. 335 intake valve, 1. In addition, the rolled valve angle, high port intake opening and offset valve location provide the most airfl ow potential of any competitive performance cylinder head. Nov 16, 2012 · RHS Pro Action cast iron cylinder heads by metriccar » Fri Nov 16, 2012 4:37 am Acid Porting Acid Porting uses chemical treatments to enlarge the intake ports, which maximizes air flow & increases intake volume, while maintaining a stock appearance. these seem to have taken center RHS 12334 Steel Angle Plug SB for Chevy Heads - UMP Drag Racing The RHS 12334 Steel Angle Plug SB is a high-performance, race-ready component designed specifically for Chevy heads in the world of UMP Drag Racing. RHS service has no idea how good they were. both heads are 220 cc intake runner, 50 cc chamber. From what I have found with it ending in 035 they should be 235cc heads. 590/600 net on 1 Feb 7, 2010 · The AFR looks tiny compared to the other heads I was flowing (you could probably put two of the AFRs ports in one of the Bowties) and moved a ton of air. With a host of runner and chamber sizes to meet various performance needs, there is something for everyone. #8---La-X and Ma-X Iron Small Block Heads Feb 26, 2012 · Re: RHS dropping iron heads by rookie » Sun Feb 26, 2012 6:34 am I haven’t heard this but EQ heads are the same head, cast in the same factory, maybe check with them. As read in the previous post. com. 1 compression 383. 2- 126 119 112 . The 23-degree cast iron head is for 360-434 c. The intake and exhaust runners are CNC-ported along with the combustion chamber for better performance. RHS Pro Action Bare Chevy Cast Iron Head, Angle Plug, 220cc/64cc made by RHS, for as low as $309. Innovative cast iron design w/ race-inspired features Delivers maximum airflow for RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 200cc/64cc made by RHS, for as low as . 60s with J heads I'm doing a set of RHS heads for a customer going on a 408 that I thought might be interesting to post here. Jun 4, 2010 · What are your opinions on the Pro Topline (now RHS I believe) heads? I have a shot at a set that are ~230 runners (can't remember exactly what my uncle said) for 400 bucks. SST Head Porting Our “SST Porting” is for applications where porting the head is allowed and, because of the application, the cylinder head just doesn’t need to be fully 100% ported. Victor Jr intake with a 750 Holley. 0 Mustang & Super Fords Magazine We still have some 14* RHS cast iron small block Chevy "porter core" cylinder heads in stock. Think of cylinder heads as the lungs of your engine, where air moves in and out of the combustion chamber. ($2,200 in 2020) now $3500 for the fully cnc-ported, valve jobbed, hand-tuned and flow tested bare castings. The Pro Action cast-iron heads have 64cc combustion chambers and maintain the stock 23-degree valve angle. Shop Shop Performance Auto Parts and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. 15 /each Add to Cart May 10, 2010 · The crown jewels of RHS are the Pro Elite line of heads. Cylinder Head Gasket Right Ford Products V6 3. Aug 20, 2011 · Can anyone give any info or specs on the pro-topline BBC iron heads part #22619000502? I've done web searches and all I can find is That they're rect port and 119cc chambers. Nov 8, 2009 · Engineers at RHS have recently designed the only small-block Chevy 23-degree cast-iron head that is CNC-ported from the factory. Features include straight or angled spark Jul 17, 2014 · The RHS® Pro Action™ SBC 14-Degree 235cc Runner Cast Iron Cylinder Heads are available in three configurations, including the standard “as cast” version with 235cc intake runner port volume, runner P-Port with seats and guide holes machined (parts not included), and runner P-Port without machined seats or guide holes. I'm doing a set of RHS heads for a customer going on a 408 that I thought might be interesting to post here. Marollo Racing Engines inc. RHS shipped three Pro Action cylinder head castings to Westech in Southern California for us to demonstrate how these heads flow These heads deliver significant gains in both power and torque for all Small Block Chevy applications - right out of the box. So I figured I would see what the Speedtalk community has to say. Dec 8, 2009 · Those 14° heads fit a pretty specific range of classes that make you run cast iron heads. cast iron sbc heads Jump to Latest 9. One head is angle plug, while the other is straight plug. Jun 28, 2007 · I have RHS 220cc cast iron heads. May 13, 2009 · There is still a place in the world for cast iron small-block Chevy heads. fuel for the drag guys. with 290cc port volume. This steel angle plug is engineered to deliver unparalleled strength and durability, ensuring it withstands the intense forces generated during high-speed racing. INT Long Short EX . With affordable prices from RPM. All heads feature a multi-angle Serdi valve job. You can follow any responses to this entry through the RSS 2. (1) Cylinder Head Style: Assembled Material Type: Cast Iron Finish: Natural $1,128. Available for a variety of applications. May 21, 2014 · They have RHS stamped on the end by this casting number and then they have pro topline E12 stamped under the valve cover. After sonic checking the spring pads, they are roughly . The RHS heads can be made very mean. 73 ratio from the older Ford CJ's), on the intake. 56 gears with your engine Why use RHS over Dart? Dart is the premier cast iron cylinder head and makes more power in my opinion than any cast iron cylinder head out there Dart 180 Iron Eagle heads would be killer on your car, rpm intake or Torker II and 750 double pumper, maybe deck heads a little to bump up Sep 23, 2018 · The RHS Pro Elite heads retail for $730 each. I am considering the 200cc version for an 11. Jan 1, 2007 · The new RHS lineup has something for every enthusiast, from cast-iron replacements to full CNC-ported aluminum race heads. The precision accuracy and durability of the Pro Elite SBC 23 Feb 3, 2010 · The RHS® Pro Action™ SBC 23-Degree Style Raised Runner Heads are cast iron heads that have been angle milled from the factory to 21-degrees, which significantly improves the performance potential of the head. 100 with my cutter to locate 26918 beehive springs. Ford ball type fulcrum rocker arm, (1. You can leave a response, or trackback from your own site. The heads were flowed on a 4. 080/1. Feb 15, 2013 · rhs 14 degree. And you indeed are correct. 5- 315 313 218 . I'm looking for an affordable cast iron upgrade to my current angle-milled 461 unported heads (no porting allowed). 9:1 Dec 11, 2009 · Anybody using or have opinions on the RHS line of Alum BBC heads? A colleague was comparing some RHS 360 to Dart 345 Pro 1. xls Mar 8, 2008 · RHS heads by Drew » Sat Mar 08, 2008 7:28 pm Are the RHS Pro Action sbc aluminum heads a descent head. Jun 1, 2007 · In this article we demonstrate that Racing Head Service cylinder heads for small-block Fords are smart money and that RHS Mustang heads make good power on the dyno - 5. 8L 1997-98 Mustang 1997 T-Bird & Cougar RH . The RHS Pro Elite series of CNC-ported cylinder heads is designed for absolute maximum engine performance. May 18, 2012 · No the current RHS heads differ quite a bit from the Top Line heads. 82 exhaust valve, The good runner went 469 at . Free shipping when your order includes this part. Mar 30, 2011 · For all you iron head types,seems to me these RHS pro torkers are the real,and actually starting to appear top dog in the iron head SBC game. Who makes the best 351 cast iron head. 016". Think aRacing Head Servicea"a For More Applications! Mar 19, 2016 · Re: are these RHS heads any good? by Walter R. engines. Jun 24, 2009 · RHS is now offering cast-iron small-block Chevy heads to replace outdated or damaged factory castings. Available in aluminum or cast iron,Pro ActionTM SBC Heads are the optimum choice for a variety of performance applications, including street rods, mus-cle cars,and oval track and drag racing. Looking for torque peak @5100-5600 and hp @ 7000-7500. 11/32 valves. Both ware as cast though the darts did have some machine work down into the bowl beyond the valve job. For more information about the RHS Pro Elite SBC 23-Degree CNC-Ported Iron Cylinder Heads or any other RHS product, call us at (877) 776-4323, or visit us online at www. This engine is going to be +. That also includes guides installed and sized. 56 gears with your engine 180cc heads if you dont have 4. Parts are new as sold from RHS sold as is. They are BNIB and they are offering them cheap (garage cleanout kind of deal). we even This listing is for two different RHS cast-iron heads. 437 Max Lift 600, 62 CC Combustion Chamber) Dart's new Iron Eagle heads for small-block Fords are a true bolt-on performance upgrade for the highly popular 289/302/351 family of engines. All that remained for Gen 1 SBCs were aluminum. 0 feed. xls - Speedway Motors 12334IS. RHS - Racing Head Service RHS - Racing Head Service is the leading developer of high performance cylinder heads, intake manifolds, Aluminium engine blocks and related engine components for street performance and race applications. RHS Thunder Series Cast Iron BB-Chevy Cylinder Heads Winning performance, superior engineering and unmatched quality are the foundation of RHS's legacy and the 24-degree Thunder BB-Chevy heads have all of that and more. cammed pump gas stroker with bolt on's only and a 750 Holley double pumper carb. 2- 145 138 . RHS offers two different sizes of CNC ports on these heads. Jan 25, 2007 · I'm starting a small block ford engine project next week, which by rules requires cast iron heads. 8/351W) - Dart vs RHS Heads - I'm been looking for a good set of cast iron heads for my 331 stroker. We can do that for you as well. xls Nov 17, 2007 · Hi Paul, don't work very often with "iron" but the numbers below are from a unit that went from "the drawing board" to the dyno. 450 plug is really deep in plug thread. Made from premium cast iron they are ready to go right out of the box. 760 valve sizes. 9K views 13 replies 9 participants last post by Chad Speier Feb 17, 2013 M Aug 14, 2020 · Racing Head Service (RHS) introduces its new RHS Pro Elite CNC-Port 6-Bolt Cylinder Heads as a premium LS3 performance head, ensuring great power on high horsepower and boosted engine builds. This cost saving modification is acceptable by most race sanctioning bodies and allows a two-degree plus or minus valve angle change from the stock Small Block Chevy placement. Jul 28, 2008 · Can't answer for the original post, but in some classes like truck pulling, you have to use a cast iron head. Bare or complete Oct 2, 2008 · Cast-iron late-1960s “206” head with bathtub-shaped Cast-iron high-performance rectangular port “990” head 98-cc closed combustion chambers with open 118-cc combustion chambers. 4- 246 238 190 . Those are basically a replacement for the O. This head is intended for a flat-tappet camshaft, so it was outfitted with a small-diameter spring that might have limited Jul 6, 2010 · RHS 180cc cast iron heads Jump to Latest 13K views 5 replies 3 participants last post by 66Racer Jul 16, 2011 O RACING HEAD SERVICE | Part# RHS-12324 Out of Stock (call for availability) $359. When those heads first came on the seen no one new them needed an off set Jun 24, 2008 · 200cc heads if you have 4. I have had some positive experience with the Roush heads, but none with the other two. Intake runners are 180cc and exhaust runners are 74cc. Jul 8, 2010 · RHS is a great head they were originally TOP LINE from Newzeland and before that they were PRO Action. Mar 8, 2013 · The thing that is going to get you is shipping on those heads the last set of RHS cast iron heads I did for someone it cost $120 to ship both heads to them and I have a Fed ex account. In comparison to the popular GM 906 Nov 16, 2012 · RHS Pro Action cast iron cylinder heads by metriccar » Fri Nov 16, 2012 4:37 am Jul 7, 2013 · RHS's Pro Action assembled cylinder heads for Ford small blocks are now available whether you have a Windsor or 5. M. 1- 69 69 56 . Check the release below to learn more about these new pieces for your street or race motor. ProMaxx Performance designed/developed this cylinder head from from the GM 906-062 Vortec factory casting. 850 lift. 355 CI with pro topline heads with 200cc runners, I think they are the same as the RHS heads. Richard Holdener Jun 11, 2014 View Full Gallery Old-timers must look around at the proliferation of affordable and power-producing aluminum cylinder heads and Aug 8, 2013 · When I purchased my set last spring (2012) and returned to the web-site a few weeks later, they had been dropped from the RHS catalog along with all of their cast iron heads. 71 /each Add to Cart Air Flow Research | #1631501 AFR 1501 LS1 210 Enforcer Heads, Cathedral Port, Assembled (4) Cylinder Head Style: Assembled Material Type: Aluminum Finish: Natural $780. 0L your Ford build will deliver better airflow and higher horsepower with these new heads. 3- 182 174 154 . 60, Pro Torker vortec head? We're building a 10:1, 358 SBC mule motor for our new dyno with thoughts of eventually marketing an inexpensive (?) "crate" engine for mild street applications. 030, 1986 Roller block, 6? Scat rods, Mahle forged piston, Lunati roller cam, Performer RPM Air-Gap Manifold, RHS Cast Iron 64cc 180cc intake Pro action heads and CR of 9. Ground-electrode of the plug (. For more information about the RHS ® Pro Elite ™ SBC 23-Degree CNC-Ported Cylinder Heads or any other RHS ® product, call 1-877-776-4323, or go to www. All help is appreciated. The heads took a good bit of work to the short turn to perform like I wanted, comparing performance to an old set of Feb 6, 2006 · The new RHS Vortec Iron Performance Cylinder Heads deliver superior flow characteristics over all other forms of iron small block heads previously available. Jan 29, 2010 · I just flowed a RHS 320 iron head that I have ported for a truck pull engine. Jul 13, 2011 · Tags: Cast Iron Heads, LA Heads, Magnum Heads, Mopar Heads, RHS / Indy 360X Heads, RHS Heads, Small Block Mopar This entry was posted on Wednesday, July 13th, 2011 at 10:10 pm and is filed under Mopar. Re: Some info on the RHS cast iron heads plus port work [Re: AdamR] #529449 11/18/0906:57 PM11/18/0906:57 PM Joined: Aug 2007Posts: 498 El Dorado Ca 6 65signet mopar 65signet mopar 6 Joined: Aug 2007 Posts: 498 El Dorado Ca Great info, it will be interesting to see how they work in the car 1965 Plymouth Barracuda 273 M/SA 1970 Plymouth Duster 360/904 10. Malik » Sat Mar 19, 2016 11:01 pm They might be selling as a good deal simply because they are no longer available. reed ProPower engines Guru Posts: 8844 Joined: Sun Jan 21 Jan 11, 2012 · Flow Data on RHS, Pro Action Cast Iron Chev SB Head, w/ 235 runner Jump to Latest 22K views 7 replies 7 participants last post by nhrata Jan 12, 2012 N May 6, 2009 · duration with 0. May 17, 2010 · Re: EQ IRON HEADS SMALL BLOCK CHEVY by ProPower engines » Mon May 17, 2010 5:13 am Can anyone confirm if the RHS and the EQ heads are cast in the same foundry??Seems the EQ head is slightly behind the RHS head in flow although they look similar. 708) is really close to exhaust valve about 0,4mm or 0. Then Comp Cams bought them out and renamed them RHS for racing head service they had some real nasty 14 degree SBC stuff we ran years ago. 6- 355 335 235 . you have been working with Comp Cams (RHS) about a new cast iron design ? Mar 17, 2011 · I just got a new set of RHS 360cc cast iron bbc heads and flowed them here is what the first one flowed and a picture. Has Anything You've Done Made Your Life Better? RHS Pro Action Bare Chevy Cast Iron Head, Angle Plug, 200cc/64cc made by RHS, for as low as $349. xls - static. they range in flow from 340-375 cfm intake and 220-250 exh. 250/1. Dec 27, 2017 · 642 HP Budget Iron Head Build - Iron-Headed Rat You can make a lot of horsepower with good iron heads, as we prove on this big-block. fdgg aud easvov zmps ujuos zakh tixmdc igxhq rdlgx ozt edlgb frk wamfnd vmtlqd zemjlm