Pontiac ram air v dyno.

Pontiac ram air v dyno 12 Bolt 3. This design (versus Pontiac's typical D-port heads) was introduced A quick shot of the Ram Air V engine at idle This is Craig Dienes' Ram Air 5 GOODNESS that we put on the dyno on FRIDAY 2/7/2025! We thought it would be interesting to see what some of this OLD Pontia Mar 18, 2019 · Pontiac 400 Ram Air IV 69, 722 Heads on dyno,, 041 cam, borr 030, DCI Motorsports is no stranger to the most rare Pontiac combination. So, Hemmings brought one to life! Follow along as we squeeze it for all its worth on the engine dyno. Not the cam for a low rpm design like a 455, especially with an overdrive. 8HP at Jan 26, 2016 · I believe the Ram Air 2, 4, and 5 had some sort of rare round-port head. 3. A total of 37 GTO/Judge convertibles received the 370 HP Ram Air IV engine. Operating under the infamous GM Racing Ban of 1963 Dec 9, 2020 · Skip Fix 1978 Trans Am original owner 10. Significantly increasing the compression ratio, such as that required for competition engines, raises the amount of cylinder pressure the starter must work against when attempting to fire the engine. TIP Tech Articles / Web Log. 52 muncie the 252-262 was just way too much. These were assembled using all stock parts and no-porting. Oct 1, 2012 · The stock ratio is 1. Using highly efficient split ports and made to order combustion chamber shapes, DCI Ram Air V cylinder heads offer the most versatile high performance Pontiac heads on the market. ramairv. Engine is stroked to 461 CID, dished Icon pistons (designed by Spotts Performanc pontiac ram air v 497 ci out for a mild mannered cruise,mccarty racing ram air v paul spotts build Ram Air Series Cams- Features the Original 744, Butler Exclusive Pontiac Ram Air IV "041" Hydraulic Roller Retrofit Camshaft and Lifter Kit, 287/296 232/241, . This was the final and best run of the day. The carb that was on there before was a edelbrock 1805 650 cfm carb manual choke. 5 centers, Q-jet on a stock manifold, 1. Aug 8, 2005 · The new issue of Muscle Car Enthusiast magazine has a dyno shootout involving 2 Pontiac motors. 96(1971) Best low-compression post-1972 head : No. 520 inch by . Dyno results: Sep 3, 2010 · If so equipped, the Royal Bobcat GTO RAM V came to the Royal Oaks dealership hollow from the assembly line. Apr 16, 2025 · The Ram Air V was Pontiac’s Swan Song unsung. Designed by McCarty Racing and built by BES. Trying to narrow some choices down. Wanna talk about rare, this is it. Aug 7, 2013 · "The new issue of Muscle Car Enthusiast magazine has a dyno shootout involving 2 Pontiac motors. The Comp Cams XE274H hydraulic cam remained Feb 1, 2009 · Pontiac engines tend to need better aftermarket connecting rods,as most stock connecting rods are rather weak designs, they need better cylinder heads as even lightly ported the more common heads are rather restrictive (yes there a few rather rare exceptions like RAM AIR V HEADS), and a better ,more aggressive cam is mandatory to letting the Check out our engine dyno pull of the amazing Pontiac Ram Air V, known as Chief Stomp Em. Building Pontiac’s never-publicly-offered Ram Air V V-8 is a path with many twists and turns, but where there is a will, there is a way. 21" stroke, with a . DCI 5 heads flow as cast 380+ cfm @ . Dyno sheet shown is for a completely stock single 4 barrel pull!!!! This single 4 is the stock height of a cast iron standard Pontiac engine. 25-inch outlet cast-iron manifolds are based on the factory ram-air/H. The 303ci Trans-Am Series Race Engine One of Tom's first tasks in Special Projects was to order a tall-deck 400 four-bolt main-block (all Pontiac production 400s were tall-deck) and have it delivered to Pontiac Engineering's machine shop, where the Nick's Garage Gear Shophttps://teespring. or Ram Air manifold. May 30, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright This is Craig Dienes' Ram Air 5 GOODNESS that we had on the dyno on FRIDAY 2/7/2025! We thought it would be interesting to see what some of this OLD Pontia Jul 5, 2017 · In addition to the machine shop and dyno facility, RPM has a complete general service department. Mar 8, 2011 · Just built a very rare 366 NASCAR RA V engine for my 69 bird. 5:1 compression ratio, and high Oct 24, 2014 · The Ram Air IV heads are ported to the max. Better bang-for-your-buck than a GTO Judge?GM's engineering wizards unleashed the 4 Jan 12, 2023 · He saw the birth of the first Ram Air engine and the Ram Air II, III, IV, and V engines. 520 inch lift with 308 degree by 320 degree duration, a huge jump from the III’s 288 degree by 302 degree Nov 6, 2023 · I wanna build a Ram Air IV clone engine. 0 L) variant for NASCAR, a 400 cu in (6. McCarty Racing Ram-Air V Heads - High Performance Pontiac Magazine mccarty-racing and DCI Ram Air Five Heads - DCI Motorsports And here is a great article on Pontiac heads that covers factory and aftermarket options. We hit 2 HP/CID Our goal is to break the 1250HP mark or 2 It is a single 4 barrel About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 18, 2017 · Ram air exhaust manifolds and pertronix hei distributor. Please help and please be descriptive. The ram air manifolds were within a few HP and TQ on the entire curve and in the lower range actually made more TQ. Jan 9, 2018 · The big-valve NASCAR heads from this program were the foundation of 389 High Output (HO) that netted 340 horsepower in the 1964 GTO. 1968 Pontiac Ram Air 400 V8 Mecum Apr 21, 2025 · The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. May 12, 2022 · Since the 1969 Pontiac Trans Am Ram Air V was never produced, this car is considered to be an engineering piece, or test vehicle, that GM used to try out a scenario where Ram Air V engines were used. 11/1. May 1, 2012 · Check out these McCarty Racing Ram-Air V heads and new design intake on the dyno. 65 rockers, Rhodes lifters , 3. Just got it off Joe Shermans dyno. Nate Cutler has been with RPM since 2002 and is the shop’s lead machinist and engine builder. Apr 8, 2024 · According to Motortrend, Pontiac project engineer Jeff Young oversaw a dyno session with the Ram Air V. Others with more experience or actual experience with your combo will hopefully chime in. 70s at Detroit Dragway. it put out 463 hp at 6,600 rpm at the flywheel on the dyno. It was very impressive the very small differences between the dyno curves. 12 (tie) Best low-compression D-port head No. Best D-port head No. O. Lance Kramer’s Ram Air V engine was built using NOS components including the mechanical camshaft. A typical hydraulic lifter is quite complex. The Ram Air IV engines require longer 7/16” rocker studs and longer pushrods. 99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand Mar 8, 2011 · Best performance head : 1970 Ram Air IV Best intake port : 1969-70 Ram Air V Best exhaust port : 1968 1/2 Ram Air II Best D-port head : No. With a 3. The McCarty brothers have long been known as Pontiac stalwarts. It consists of an outer body and internal plunger. The Ram Air III had a high-performance Quadrajet 4-barrel carburetor, free flow cast iron exhaust manifolds, a dual exhaust system, a high performance cam, a 10. 5:1 on Pontiac V-8 engines except for the Ram Air IV, V, and SD-421 engines, which used 1. Here, from 3000 to 5000 rpm, there are some very large gains in air flow. 8 mph Here is a whole slew of vintage Pontiac tests - many of which were performed on SLICKS and with lots of mods. RoadTestTV. 73, 4 wheel disc. Driving review and technical breakdown for a 1969 Pontiac GTO Ram Air IV. The results of the dyno test are taken for face value and not agonized over The 1960s were a war zone of automotive innovation with shots fired from all sides. Hydraulic Lifters. It changed hands a couple of times. 5” manifolds, so the test data will be good with these “cheap” headers. Manifolds - Huge Aftermarket vs. May 1, 2012 · The 476 dual-quad Ram-Air V was bolted to the dyno at Tony Bischoff's BES Racing Engines in Guilford, Indiana. NONE of the stock ones were fast by modern standards. 0 E-Force AWD Quadrasteer 06 Pontiac Grand Prix GXP Apr 13, 2018 · All around street-road high performance with occasional 1/4 mile track appearances. we will be back in the spring to se Feb 4, 2020 · The Ram Air III also had chrome valve covers and a mandatory hood sourced cold air induction system just like Pontiac's other Ram Air 400 V8s. Unfortunately, it never made it to production. com/stores/nicks-garage-gear-----Nick's Gara Jan 21, 2020 · Pontiac had two Ram Air III cams, the 744 for manual trans applications (the specs you have above) and the 068 (or "S" stamp) which had . Pontiac Intake Manifold Tech; Pontiac Stroker Kit Tech; Pontiac Rear Main Seal Tech; Newsletter Archive. A brainchild of John and George DeLorean, with a little “borrowed” inspiration from Ford, Pontiac’s one and only tunnel-port V-8 could have turned the tide of the muscle car wars. 0 L) short deck version for SCCA Trans-Am racing, a 366 cu in (6. The 476 dual Mar 24, 2012 · The Holley was given 2 pulls on the dyno, and we verified that the air/fuel ratio on the Holley was virtually identical to the Q-Jet: The A/F number matched exactly at many data points, and were never different by more than 0. On a stock iron head GTO 400CI, going over . Mar 27, 2014 · This is a max effort 4. All A/C cars Nov 20, 2023 · The CNC heads are patterned after the port flange configuration of the 1969-1970 Ram-Air IV Pontiac heads. 5” aftermarket Ram Air cast exhaust manifolds, but I can’t use these on my test run stand or on the dyno, so I run some old 3-tube headers for test purposes: The 3-tubes duplicate almost exactly the flow performance of the Ram Air 2. 507/. manifolds that Pontiac designed for its Jun 4, 2014 · The truth is, there were actually four versions of the famed tunnel-port Ram Air V V8 developed: a 303ci short-deck version for SCCA Trans-Am racing, a 366ci version for NASCAR, a 400ci powerplant Sep 24, 2015 · 1969 PONTIAC GTO Ram Air V- Bill & Rita Schultz You can now buy an aftermarket set of heads, intake, & exhaust manifolds. Idle demonstration www. Oct 24, 2014 · The Ram Air IV heads are ported to the max. And building one is possible, as DCI Motorsports produces a recreation of the Ram Air V head, but there is a lot more to worry about than a simple head swap. 4HP@6000 & 620. 651. 2165Part Type:Cylinder Head [Assembled]Product Line:Hydraulic Roller TappetCylinder Head Style:AssembledCylinder Head Material:AluminumCylinder Head Finish:NaturalCombustion Chamber Volume (cc):72 ccCNC-Machined Combustion Chamber:YesIntake Runner Volume (cc):215 ccExhaust Runner Volume (cc):175 ccCNC-Machined Intake Runner:NoCNC-Machined Exhaust Runner Oct 12, 2013 · Spotts Performance builds a stout 1970 Ram IV for 70 Bonneville Funeral car. WS6 manual 02 Pontiac Aztec only option tow package 04 GMC Sierra Denali 6. 6TQ@4900 Feb 14, 2016 · I have shown the "041" Ram Air IV cam using the 1. com Oct 3, 2014 · When General Motors mandated a maximum compression ratio of 8. Dec 17, 2014 · Pontiac's Ram Air nomenclature can be confusing for the uninitiated, but what set the Ram Air IV apart were its round-port heads. Quadrajet was quite unique and flowed more than 825 cfm. You can port the standard cast iron intake manifolds to match the Ram Air IV but you risk vacuum leaks at the top of the ports. Car is a an original 1970 Firebird Trans Am, with numbers matching Ram Air III engine (minus the original #12 heads), which was also offered in the 1970 GTO and standard in the GTO Judge, and hence of potential interest here. 0s with a 268/268 solid roller in a 455 with Warrior intake and 950 Holley. Pontiac engines, these heads are patterned after the 1969 -70 Ram Air IV Pontiac cylinder head. Completely street with moderate valve springs and street cam to represent HP by just bolting a mild set of street heads with a stock intake on to an OEM block and cast crank, standard $450 rods and stud Dyno test and tuning this mild, pump gas friendly 9. 5:1 compression ratio, and high Mar 14, 2025 · RESURRECTING AN ALMOST LEGEND, PART II Finishing and dyno testing Pontiac’s Ram Air V engine WORDS AND PHOTOGRAPHY BY EVAN PERKINS here are many paths to horsepower. 14. 12 (tie) Best low-compression D-port head : No. 6 cylinder Windshield & Hard Bags 99 Pontiac TA 30th Anniv. 77 valv Find PONTIAC Parts and Accessories ram air exhaust manifolds KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! AccuSeal Pro Dyno-Paks, Graphite Jul 16, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Classic Muscle Car GTO Ram Air IV in for restoration and engine overhaul. http://www. My outside was the 245-252@50 but found the 236-242 way more friendly with that gear. i. 90's and up. One of 549 built by Pontiac in 1969. 400) head : 1967 Jun 28, 2007 · Many mess up when they copy the exact Ram Air 4 Hydraulic cam specs and ask for that profile on a solid camshaft. used an otherwise typical-for-1972 Quadrajet with an airflow capacity of 750 cfm, the 1971 455 H. May 26, 2017 · Need a good carb recommended for a Pontiac 400 . RAM AIR 3 versus RAM AIR 4. I’ll appreciate and enjoy the read. Though this engine features a roller cam and 11. 20 valve! Apr 28, 2011 · The Ram Air IV cam was designed for high winding 400's with stiff rear gears. Apr 20, 2025 · Finding any factory Ram Air V parts from those days is like finding the jewel the old lady tossed at the Titanic in the movie. com 1/4 mile drag race between a very rare 1969 Ram Air IV GTO and a rare 1970 LS6 SS454 Chevelle. Maybe a Mar 4, 2013 · A popular topic for discussion. Feb 13, 2024 · Speedmaster ram air IV flat tappet heads with a edelbrock 7156 intake. Tom Jun 1, 2021 · "Butler Exclusive Pontiac Ram Air IV "041" Hydraulic Roller Retrofit Camshaft, 287/296 232/241, . did some interesting dyno testing on a 500hp 455 using both the RARE ram air manifolds and a set of long tube headers. Desire to get anywhere around 425-450hp with great low end torque for under 5k after machine shop cost. 507 glasgo 69 gto ram air 4 and 70 judge ram air 4 dyno day,the 69 made 392 hp,and the 70 made 384 hp. Our customer's father-in-law purchased this 1969 Pontiac GTO Ram Air IV new in the Summer of '69 in New York City. com/stores/nicks-garage-gear-----Nick's Garage Apr 20, 2018 · While the 1972 455 H. This was under the watchful eye of Dan Jensen, one of the organizers of the Pure Stock Drags. I am under the impression that at lower rpm's, the engine does not require as much air, so the airbox is making a "Ram Air" effect, but as the rpm's go up, the air box cannot keep up with the demands of the engine. I watched a few of the dyno pulls but I had to leave before the final runs. 541 HR113" Just looking for some feedback. It sat in a NY garage since the mid-80's. 6X. Ram Air IV on the dyno Pontiac Ram Air V Crate Engines 317-260-3486 lmc3470@aol. Jul 24, 2019 · The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. 48, No. Ran it with a single 4bbl carb as it will be put in the car and a 2-4 intake with a pair of small AFBs. Brads machine shop assembled the engine and performed the dyno. Using the original Qjet, iron intake, 670 heads with 2. Very interesting reading. Dan is a good guy and knows his stuff. The Ram Air V program was put on the back burner and well into the 1970s, complete engines and components were still available. Lots of dyno comparisons out there with RA manifolds with crush bent vs mandrel bent head pipes. Best low-lift (under . 27:1 compression, it’s actually docile enough for street use. Stock Factory Restoration. It became synonymous with Pontiac’s A-Body-spec Ram Air engines beginning in 1968, and many commonly refer to it as an H. 6X Best balanced head (exhaust to intake) : 1963 421 SD Best low-lift (under . My question is which one , i also have Rhoads 9518PL lifters that I'm going to install with cam. 45 sec. 2 sec. The Ram Air moniker was first introduced as the Ram Air II—an available performance package in 1968—that was largely the same as the Pontiac Ram Air V Crate Engines 317-260-3486 lmc3470@aol. The factory rated the Ram Air IV at 345 horsepower, just 10 more hp than the Ram Air III, but a look at the spec sheet tells a different story. In 1970, the rebuilt original RA V engine was re-installed by Royal and the GTO clocked consistent 11. This is a good link for camshaft checking info: Pontiac’s swan song unsung was dubbed the Ram Air V. 24 of the Ram-4 GTO/Judge Convertibles received the Muncie four-speed manual transmission. The numbers dont lie, as the naturally aspirated 609 cid engine hits a Pontiac record-setting 1219. Jan 1, 2006 · Edelbrock patterned its Performer RPM aluminum Pontiac cylinder heads on Pontiac's '69-'70 Ram Air IV casting, which used the round-port flange. Concorse correct 1955-1979 Pontiac V8 engine restorations. Ramairv. 8HP at Jun 1, 2022 · One more interesting solution was simply to run the pushrods straight through the intake ports, as Ford did with its 302 and 427 Ford Tunnel Port engines—and as Pontiac did, too, in 1969 with its near-legendary Ram Air V V8. Last but not least my friend Greg that had a huge impact on this successful outcome. 5:1 400 build for a 4 speed 1967 GTO. Nov 27, 2019 · Today Ram Air V pieces are highly coveted by a small-but-dedicated crowd of hobbyists, and they command a premium. 518". Mar 18, 2019 · Pontiac 400 Ram air IV , , 69 722 heads on Dynotest Mar 8, 2011 · But obviously Pontiac Engineers recognized that 12-bolts were definitely needed due to the Torque and Horsepower in the 455's larger displacement motor. 407" because their standard heads did not flow beyond that point. Tin Indian Performance Newsletter Archive 2009; Tin Indian Performance Newsletter Here are the same tests performed in 4th gear. It was a 400 with 670 D-port heads in '67 Firebirds and GTOs. 670 Mar 16, 2010 · The Pontiac engineers knew that heavy automatic-trans cars would not perform properly with a longer-duration cam, such as the 9794041 Ram Air IV camshaft, so they were not installed in such cars. 5 bore 4. 25" crimp bent head pipes Oct 14, 2014 · I have been running a V engine on the street for years. This dyno sheet was with 80 jets(13 to one), we went to 77(14 to one) and it was too lean. When you look at motor ratings you see the factory rating of Ram Air IV Horsepower at 370HP/5500RPM, and the 455 HO at 360HP/4300RPM, which I wouldn't think is the 455's peak RPM. Original parts are utilized as much as possible, all parts, engine, head codes, and paint colors are verified during restoration process. I have run from 252-262@50 down to 236-242@50 in my 455s. The GTO is 1 of 759 built in 1969, a Feb 21, 2015 · A stock Pontiac starter is designed to turn over a production-type Pontiac V-8 that operates on pump gas and uses original equipment. Pontiac's legendary Ram-Air V program was perhaps the most celebrated engine that almost was. This is our first try and we will be re-dynoing in a couple of weeks. 5:1 for its division's engines in 1971, Pontiac offset the pending performance loss by increasing displacement, and the Ram Air IV Nick's Garage Gear Shophttps://teespring. Nov 9, 2010 · Dyno Testing Hedders Vs Manifolds For Stock And Performance Engines These 2. 5 CR calif pump gas engine. Sep 2, 2023 · I have a 455 30 over with kauffman 85 cc heads and 2 1/2 ram air manifolds, performer intake and 800cmf Q-jet, thm400 with 2400 stall and 3:55 rear. com 1/4 mile drag race between a rare 1969 Ram Air IV GTO tuned by Royal Pontiac and a 1970 Cougar Eliminator powered by the legendary HOW MUCH POWER DID A PONTIAC RAM AIR 400 MAKE? HOW MUCH POWER DID THE 1970 LT-1 350 REALLY MAKE? IS A RAM AIR 400 PONTIAC MORE POWERFUL THAN A CHEVY 350? IS Nov 20, 2023 · The CNC heads are patterned after the port flange configuration of the 1969-1970 Ram-Air IV Pontiac heads. Feb 1, 2009 · Undaunted, the team took this as an opportunity to get onboard with Pontiac's new Ram Air V program. -Must keep RA3 heads and Rochester Carb. The cam winds up being smaller vs the stock cam due to the solid lifter ramps required. HOW MUCH POWER DID A PONTIAC RAM AIR 400 MAKE? HOW MUCH POWER DID THE 1970 LT-1 350 REALLY MAKE? IS A RAM AIR 400 PONTIAC MORE POWERFUL THAN A CHEVY 350? IS Aug 11, 2012 · 1978 Black & Gold T/A [complete 70 Ram Air III (carb to pan) PQ and 12 bolt], fully loaded, deluxe, WS6, T-Top car - 1972 Formula 455HO Ram Air numbers matching Julep Green - 1971 T/A 455, 320 CFM Eheads, RP cam, Doug's headers, Fuel injection, TKX 5 Spd. Recently, Nate told us about a numbers matching Pontiac GTO 400 Ram Air II engine the shop had built. SD performance, Butler, SMI induction, Brads machine shop were all very professional and extremely helpful for this build. News and Info; Pontiac Engine Tech. SpecsBrand:SpeedmasterPart Number:PCE281. That being said, now you can see one making pulls on the dyno. 12 of the 24 GTO’s had “The Judge” option and 12 did not. And as the muscle car era evolved into the late ’60s, a new Pontiac Motor Division high-performance engine program came to light: Ram Air. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. Pontiac Horsepower Record! 455 pump gas street engine idling at 850 RPM. This is a 1974 factory 2 bolt main 455 block with forged internals. Best balanced head (exhaust to intake) 1963 421 SD. Don't have flow numbers but the 79 T/A they were on ran 10. The Ram Air IV heads have intake ports that are taller than standard Pontiac intake manifolds. aluminum castings, are popular since they are compatible with all Pontiac hood lines and accept all original equipment—very important factors if you That was the end of testing, but not the end of the Ram Air V GTO. Depending on the camshaft you may need 5 to 10 degrees more camshaft duration. This is a pump gas Pontiac goi Mar 11, 2018 · Testing parameters with Ram Air manifolds and 2. 800″ with a 2. 030" over 4. True 9. Though never factory-installed in any car, the ultimate engine of the Ram Air line of engines was the tunnel-port Ram Air V. Another friend picked it up 10 years ago and has it ready to drop in his 69 Trans Am street car. While the Ram Air V was never offered in a production vehicle, adding to the mystique, a number of the engines and Mar 2, 2012 · The owner intends to install the 2. 181 bore. Jun 30, 2012 · 70 Pontiac TA Ram Air 4 manual 73 GMC 23' Sequia 455 Olds FWD 78 GMC 26' Royale 403 Olds FWD 93 GMC Typhoon AWD 3500 miles with both options 98 Honda Valk. Skirting the cubic-inch policy, the official Feb 26, 2018 · Therefore, longer valve are required. They were also aware that lobe separation would determine where in the rpm range optimum power would be developed, and how lobe location would affect Early on we learned that camshaft selection is very critical when using the Ram Air Exhaust Manifolds compared to headers, tighter lobe seps along with long durations just don't work since they need the exhaust scavenging of a longer primary tube runner which are found only in long tube tubular headers. Butler Performance further worked-over these heads to maximize the airflow. I have a new summit 2821 ram air 4 cam (041) and a comp 51-224-4 cam available. 16, No. It is an original car with its original drivetrain. Chrysler was the first to develop the H-bomb, in the form of a hemispheric-headed elephant engine that rattled Feb 20, 2015 · With the exception of certain limited production Super Duty and Ram Air engines that used mechanical camshafts for maximum performance, all other Pontiac V-8s were fitted with hydraulic lifters. Thank you. Conv. 470" lift won't really produce more power. 30 over with a ram air iv 9794041 cam and #16 heads with mild porting. com 1/4 mile drag race between two rare GTO's. Idle sound of Pontiac's tunnel-port Ram Air V. I’ll be getting the Ram Air IV exhaust manifolds and intake also. com 455 stock block pump gas street engine. this was with no tuning. Young says that the Ram Air V was producing 475 horsepower at 8,200 RPM, making it one of 69 GTO Judge Ram Air IV chassis dyno test. 6. Dec 7, 2013 · http://www. Headers vs. Jun 26, 2017 · Most comparisons you find with RA manifolds vs headers generally use a mandrel head pipe off the manifolds, which gives a better apples to apples comparison and shrinks the HP difference between the two. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Jun 9, 2018 · The Ram Air III also had chrome valve covers and a mandatory hood sourced cold air induction system just like Pontiac’s other Ram Air 400 V8s. Designed for 1965-79 389-455 c. 609 Cubic Inch almost. See All 6 Photos. The factory did not install the engine (as it was adamantly against GM’s plus-400ci policy), but did build it exclusively for Royal Pontiac and provided the full RAM AIR V motor separately. @ 97. Jan 17, 2021 · A friend of mine purchased the Ram Air V from their 1970 Firebird race car back in the mid 70's. 614 HP, 548 Torque, 7200 RPM pull. In 1969 Pontiac created four versions of the Ram Air V engine: a 303 cu in (5. 5:1 at any time through the entire rpm range – the 2 carbs were metering air and fuel at exactly the same ratio, so Aug 7, 2013 · "The new issue of Muscle Car Enthusiast magazine has a dyno shootout involving 2 Pontiac motors. It still sports the factory 4. I run a stick shift in all my cars. 90 and the Mar 18, 2017 · my friend is rebuilding his street/strip 1971 lemans' 455it will be a pretty mild build, stock heads, maybe cleaned up a bit, a Melling RA IV copy cam on 113. Round port heads improved flow while the engine’s unique cam profile provided . 96(1971) Best low-compression post-1972 head No. I guess its thought to be the first Ram Air engine because the FB and GTO had a Ram Air hood and ductwork available for the same 400-4bbl 670 D-port engine. My advice would be a more torque oriented cam with a much lower rpm power curve. 785 stroke Pontiac Tunnel Port by McCarty Racing www. Pontiac Engine Combinations Pump Gas; Pontiac Engine Combinations RACE; Resources / FAQ. While the Ram Air V was never offered in a production vehicle, adding to the mystique, a number of the engines and Pontiac’s Ram Air V engine was never offered to the public, so we decided to build one of our own. Stock Exhaust Dyno Test - High Performance Pontiac Magazine Bear Feb 5, 2025 · Originally, the Pontiac Ram Air V engine was to be built in four variants: a 303ci unit for Trans Am competition homologation, a 366ci version for NASCAR, a 400ci version for production cars, and Aug 16, 2019 · You are going to see a Pontiac engine, built by the McCarty Racing team that uses a set of their insane Ram Air V heads make 1,200hp naturally aspirated and sing to 8,300 RPM. 5 ratio rockers instead of the 1. With a OD trans I would have gone with a 3. 050" figures of 212*/225. . Any tips or pointers would be appreciated. Jun 10, 2014 · http://www. The white GTO is a Ram Air III GTO Judge powered by a 366 horsepower 400 cubic engine. Compression is ju Dec 29, 2004 · Building a 1969 Pontiac Trans Am with a 303-Based Ram Air-V Engine - High Performance Pontiac. Please no haters. With the duals it made 452 HP @6700. d. They raced some of the fastest Pontiac cars n NHRA history in various forms and classes. Looking to get a electric choked carb but wanted to see what was a good combo for a good street and occasional quarter mile car. Airflow was the key to the success of the previous Ram Air engines, but the pesky pushrods got in the way, restricting the size of the 1969 Pontiac GTO Ram Air IV Sold - Michigan! Sunnyside Chevrolet of Elyria, Ohio in conjunction with Greg's Sports, Classic, & Muscle is proud to offer for sale this beautiful, REAL 1969 Pontiac GTO DOCUMENTED RAM AIR IV!!! Yep, that's right, a real 69 GTO Ram Air 4. Your tolerance will dictate the amount of cam. 1978 W72 400 Trans Am, 1965 Tri-power GTO, 1969 Ram Air IV GTO Judge, a 1973 Super Duty 455 Trans Am, or a 455 for a 1971 Grand Prix, DCI motorsports will rebuild your engine keeping the factory look and function while upgrading the fundamentals to allow your engine to Jul 13, 2024 · The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Eddie was invited by Pontiac Engineering to attend a seminar on the new tunnel-port Pontiac V-8 Jan 21, 2025 · All those Ram Air engines found their way into production models, allowing the GTO and Firebird to hold their ground on the street and strip, but Pontiac had a bunker buster in the works with the Ram Air V. 6 L) version for street use in GTOs Details on the building from to start to start up of a 455 bored and stroked to 497 CID with Ram Air V heads by McCarty Racing. I’ll get the Ram Air IV heads from Ames (aluminum from Edelbrock) and the 041 cam from Ames also. Most Pontiac enthusiasts are familiar with the Ram Air V’s most distinctive feature—its tunnel-port cylinder head, which features cavernous intake ports bisected by a pushrod, and separated exhaust ports. 400) head 1967 No. Standing 1/4 mile . I really want to do a cam swap as well, but a well known vender is really pushing a hydraulic roller swap (pricey) and wouldnt even recommend a flat tappet (which they sell) due to the risk of wiping a lobe. Throttlestop acquired this car a few years ago from a private collection. Some are more direct than others. Nov 13, 2017 · 69 GTO 400 Ram Air iii Needing a rebuild. Dec 1, 2011 · It, and the '69-'72 Ram Air IV and 455 H. It idles around 1,200 rpm and through reproduction Waldron exhaust. Jun 1, 2022 · One more interesting solution was simply to run the pushrods straight through the intake ports, as Ford did with its 302 and 427 Ford Tunnel Port engines—and as Pontiac did, too, in 1969 with its near-legendary Ram Air V V8. Dec 10, 2024 · The Ram Air IV was the little engine that took on Hemis and 454 LS6s, while establishing Pontiac as a performance brand. 55 and a 2. 5:1 compression ratio, and high Best performance head 1970 Ram Air IV. Best intake port 1969-70 Ram Air V. High Performance Pontiac magazine has conducted and objective comparison of long tube headers, shorty headers, and RA manifolds. Follow along as we document, detail, and dyno one of John Check out our engine dyno pull of the amazing Pontiac Ram Air V, known as Chief Stomp Em. More tuning is definitely in the future on this. com. Mike Noun's List of Pontiac Road Tests The 476ci Ram-Air V Pontiac features off-the-shelf short-block components combined with the new McCarty Racing reproduction Ram-Air V cylinder heads and street tunnel ram intake. The "Ram Air 1" was not really a Ram Air engine. Nov 4, 2007 · 400 cubic inch V8 Ram Air IV, four speed 0 to 60 mph . Aug 27, 2020 · On the RA manifold debate, Paul C. Pontiac limited the lift to . What is the cu inch and what are your goals? Mar 1, 2009 · Ram Air V BackgroundPontiac's Ram Air V program is, without a doubt, one of the most mysterious and legendary projects in the division's history. 65:1. Nov 10, 2015 · *In 1970 the Pontiac division of General Motors built 40,149 GTO’s of which only 3,784 were convertibles. Will post a vid. 65 ratio which puts the lift at . 90 posi and about a 2500 stall compression will be set at Feb 20, 2015 · The long-branch manifold wasn’t compatible with the intermediate A-Body platform, so Pontiac developed a streamlined exhaust manifold that debuted in 1967 on the 400 H. A total of six pulls were made and the results were impressive, to say the least. Two styles are available: a street legal 87cc combustion chamber version for low compression applications using 92 actane fuel and a 72cc chamber version for higher compression, racing applications. Best exhaust port 1 968 1/2 Ram Air II. xcqykh kqya aqdmvex ucfjzxhz ykce asjjm mlu fwupuor swoueaky fjvqynp