Pontiac 66 Heads - Numbers Matching 1968 Pontiac GTO RestoMod Turns Heads ….

If I were to buy a set locally and the owner hadn't had them magnafluxed and wanted a no-return sale I'd stay under $250, and if he would warranty to pass inspection, I'd deduct …. As the successor to the Ram Air II, the 370-horsepower RA IV is most often considered the most powerful GTO engine. It's best to actually measure the chamber volume if the heads are off the engine. FAQ: Members List: Social Groups: Calendar: Search: Today's Posts. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central. 66 valves probably had plenty of flow. 32 two-barrel 326 V-8 increased to 9. thrive chiropractic quincy il 060"*Actual displacement of 350. The cylinder head is made of A356 aluminum castings and features 100% CNC ported …. Cylinder Head, Performer RPM, CNC, Assembled, Aluminum, 87cc Chamber, 215cc Intake Runner, Pontiac, 455, Each. Pontiac GTO 1966, Elite 5 3/4" Round Chrome Diamond Cut Rat Rod Halo Euro Headlights by RedLine LumTronix®. may be different than other flow benches also. They were designed for 100 octane fuel, cheaply and readily available in the '60's. 66" valves, new CC single springs w/dampers, and stock pressed-in rocker studs that we had pinned to prevent pull-out. 99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand. 66 69 1961 21SD 368,373HP(61) 540306 1. 08 inches in diameter; they are 1. It is important to note that it is not related to the VIN number. The bolt holes line up perfectly, with and without gaskets. craigslist bakersfield motorcycles The 6X castings started being installed on engines after about 2/21/75. The chamber CC was 88 and cut very open like later heads. Regardless of which head option was chosen, the 1966 GTO was an impressive performer for its time. 4L Cylinder Head 12580234 Driver Side GM Chevrolet Equinox Pontiac Torrent 3. There's general Pontiac groups, and also groups for specific models. if you have them ported the performance will be very good if racing. ) *blocks are assumed to have a. 77" exhaust valve is not a good enough reason. 045” gets you to 91 CCs, this computes out to 8. Combustion chamber depth measured from quench side. These are a matching set, dates are K 17 5 and K 18 5, or November 17, 18 1965, for the 66 production year. Cylinder Head 8-455 Fits 1971 BONNEVILLE "CAST#66" 1042517 (For: Pontiac) Opens in a new window or tab. These heads are a 1958 casting with 1. 66 valves, also as stated in the …. Get ratings and reviews for the top 11 pest companies in Pontiac, MI. I might purchase the aftermarket '66 aluminum intake, gasket match the intake runners to the heads you choose, and fit the larger Rochester 500CFM 2 Bbl end carbs to it. The best intake port on a Pontiac D-port head can be found on the 6X, the #66 can't even …. As stated, there are so many manufacturing tolerances surrounding the individual parts responsible for the camshaft installation, degreeing the cam should be …. 1966 Pontiac GTO 455 HO Tri power 455 CI/375 HP. They are 72-75cc chambers with 196" in /1. PONTIAC POWER RULES ! ! ! BACK. I've acquired a 455, it has casting #66 heads. Advertisement Advertisement Please. Asking $400 or best offer for the pair, will ship at buyers cost. The “B205” code is the date; B for February, 20 for the day, and 5 for the year. 66 valves in them, are 75cc and have pressed in rocker studs. Soak the lifters and rocker arms in 30W engine oil for several minutes. Dencouch, either that CAD program is F'd up or you errored in your input. Head Torque Sequence Diagram-Edelbrock. 3) Drill and tap the air injection bosses in each exh port for a allen set screw to …. Sealed power makes a replacement piston that has reliefs to accomodate both sets of heads. In its introductory model year as the division's top engine, the round-port 455ci had a gross rating of 335 hp at 4,800 rpm and 480 lb-ft at 3,200 rpm. Did a bunch 67 / 16's for a pontiac builder. 3-bolt flange (26) Slip fit (26) Ball and socket flange (12) Weld-on (5). engine head gasket ,ohc6, 66-69 firebird tempest. The KRE aluminum high-port Pontiac head is the second new aluminum aftermarket Pontiac head to come on the market by Kauffman Racing Equipment. Both heads have Ram Air IV exhaust port flanges. Shop Edelbrock 455 Pontiac V8 Cylinder Heads and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. They are easy to set up, and low maintainence. 66 and output was uprated to 285 hp for the H. Mild port work can increase intake airflow beyond the stock range of roughly 190 cfm at 28 inches of pressure, and larger valves can be installed. Streamlined exhaust manifolds were used to improve flow. 37 correction factor to his numbers for 28" of. (cc's are factory reported, may actually be different). perverstage tickling The W-72 400's had 6x-4 heads with about 93-94cc. Will 6X-8 heads fit my 389 as currently built. In every Grand Am model in which ETS is. The 4X head was the 49-state casting used on all '73-74 400 and 455ci engines. 66 as these did not come in a 4. 66 Pontiac Lemans GTO hood bucket seats with rebuilt Chevy 454 with about 6k miles and th350 good shape not a whole lot of rust like others. This head is available with initial flow numbers around 330 …. Cyl Head, CHEV 350 64-85 CYL HEAD. Your only option is to check flow into radiator and try to check a 389 gasket against a 400 one they may be different. Unsure of the cam, if it is a 441 or 254 I am sure it will need to be addressed. Nunzi tells me that he recalls Ram Air-spec 670s being. After more than four decades performing, and nearly 67 albums, Tuku has stopped playing. 77 Ferrea Valves(101 cc chambers) Originally had the matched 66 heads, milled and ported for nitrous. frenchlakeautoparts-store (30,643) 98. ** NOTE 2: DO NOT use Loctite on Aluminum threads. Compressed Thickness, Head Gasket Has No Water Passages, Pontiac, Pontiac V8, Each. this kit is about $350 were as the bar link retro lifters start at $500. The part that puzzles me is the 46 head had a 1. McLeod hydraulic clutch conversion. THE HISTORY AND CULTURE OF HUNTINGTON BEACH is so steeped in surfing that this So Cal beach to. Ready to bolt onto my 1976 Pontiac 455 engine and then install. KRE Heads at 310cfm ported by SD Performance, ProSystems Dominator carb on ported Victor intake, P-Dude custom grind hydraulic roller, MSD ignition, 3. Helping you find the best pest companies for the job. As a general rule, “W” coded blocks are manual transmission and “Y” coded blocks are automatics. When installing Edelbrock Pontiac cylinder heads on 1965-1966 and some 1967 engines that came stock with the early 17° valve angle, compatibility of valves with pistons will need to be checked. Eduard Seitan found his calling by using his pilot skills to rescue dogs through an organization called Pilots N Paws, which connects private pilots with animal rescue organization. Early Pontiac V-8 Engine Cooling. STATIC COMPRESSION RATIO CHART FOR PONTIAC ENGINES AND HEADS. You can build a 455 out of a 400 using a turned 455 crank. 100; Valve angle is 14 degrees (stock pistons …. 1964 Impala SS 409/470ci 600 HP stroker project. HEAD # CHAMBER VOLUME APPLICATION NOTES 540306 69 1959-1960 SD 1. 50:1 stamped steel rocker arms, 273/289-degrees advertised duration and. Very little shrouding of the intake valve. , cam timing, altitude, and boost of 0 PSI is 8. There is no effective way to drill and tap those heads for the end exhaust manifold bolts. 1974 350 200HP (GTO) 46 (screw-in studs) 2. 66: 96cc: 400: 170/185HP: 46/4c: 1. Estimated Ship Date: Jul 10, 2024 (if ordered today) Free Shipping. I tried Google, and for some reason the search function on this site won't work …. OPGI offers Edelbrock plus six other trusted. I have a set of 66 heads of a 1971 455. SHARE: The Route 66 Hall of Fame and Museum in Pontiac, Illinois is a must-see destination for anyone traveling along the historic Route 66 highway. 00 outright (no core charge) for 6X heads. The smaller valves, though not as desirable as larger valves, really weren’t a huge detriment to making good horsepower. Edelbrock Total Power Package 460 HP 389-467 Pontiac Top-End Engine Kits 2054 Edelbrock Total Power Package 460 HP 389-467 …. Stampings on 46 Head Code Just some more codes and sub codes for the 46's. Has anyone used a '66 Tripower intake on RAIV or Edlebrock Performer heads? After we installed the heads, I set the aluminum intake in place on the heads. So, I just bought a 1965 pontiac Tempest Custom (GTO Clone). 2004 GTO Pulse Red stock motor computer tune 13. Pontiac, or formally the Pontiac Motor Division of General Motors, was an American automobile brand owned, manufactured, and commercialized by General Motors. 75-inch Manley valves, Harland Sharp stud-mounted 1. Notice the unique chamber design, very similar to RAIV and 455HO chambers. 77-inch valves using his Serdi 3. With an 068 cam and decent gas, yours should be a screamer. item 8 Cylinder Head 8-421 3-2BC Fits 65-66 PONTIAC GTO 1044607 Cylinder Head 8-421 3-2BC Fits 65-66 PONTIAC GTO 1044607. Situated in a historic neighborhood location, the museum is well-equipped to reach out to the Pontiac schools and community. The Pontiac GTO is still one of the most iconic muscle cars ever created. Mar 14, 2023 · 1979 Trans Am: Y84 WS6 400/4spd 1967 YS 400, 670 heads, Summit 2802 cam, long tubes, ST-10 trans. It will produce the most torque. 1966 Pontiac GTO 55,598 mi $ 62,995 or $815/mo. Number produced: Total: 96,946. 25 over the previously stated figures. 6L/400 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Gearhead Gifts - Find the Perfect Gift for the Gearhead on Your List! Cylinder Heads, As-Cast, Assembled, Aluminum, 72cc Chamber, 215cc Intake Runner, Ram Air IV Port, for Hydraulic Roller Camshaft, Pontiac V8, Pair. Conceived as a rival to the Ford Mustang, General Motors took the body of the Pontiac LeMans and put the 6. Pontiac Blocks- Bore & Stroke; Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; 3/16" Rings Required **Fits 1964-66 22 deg. I would like to pull the trigger on some heads so I can put this in a have another fun street. The KRE heads used Ferrea valves of 2. That is because the holes left in the heads after removing the pressed in studs are too large to tap for 7/16"-14 BB Chevy style rocker studs and a 7/16"-14 heli-coli must be used. Chevrolet Gemini small-block engine. Unless limited to such castings for originality purposes, cylinder heads from 1967 or. Edelbrock 455 Pontiac V8 Cylinder Heads in-stock with same-day shipping. Apr 10, 2023 · Here is dyno sheet of my 455 (+. A few cars around 68-71 have 72 cc chambers that would give you about 10-10. Porting the 6X head will still realize a gain in performance, but it's not as. SVC43 Pontiac Factory Chrome Valve Cover (pr) $109. 66-inch exhaust-valve size in the 6X heads is not the restriction in those engines- it's the exhaust system. Both 65 and 66 intakes are attached to the heads with 10 bolts. Pontiac quickly overtook Oakland in popularity and supplanted its parent …. Rule of thumb is, you need to run one full point higher. These heads I just finished are for a 389, but could be used for a 421, or even a 326. The 6X head was mounted on the L-78 400 cubic inch displacement engines between 1977 through the final . sellars funeral home mt juliet tn obituaries This is a page where owners of all Pontiacs can find parts or cars for sale without. 030 oversize using Icon forged Racing Pistons and Hasting chrome molly Racing rings. Cannot be shipped Internationally. Very tame until you stomp on it. Engine Gasket Set (Head / Intake / Exhaust / Valve Cover) for Pontiac. Tri-Power throttle shaft for 1959-1966 models END carburetors only. I was planning on keeping the bottom end stock minus. Assuming you do have the correct "48" heads for your engine, there appears to be 2 different chamber volumes - 1 for the 350HO and the other for the RAIII. Just got rid of my 7M5's on my 455 and replaced w/6X. With the earlier HP/big valve heads you start out with a longer valve,so there's less room with the commonly available valve lengths. Good 400 CI engines are still available with some diligent …. NOTE: The end carburetors use a different throttle shaft than the. In short, they increase the usable rpm range of the cam, by producing more low rpm torque. I had a set of heads on my 66 back in 2002ish but got them from Rock and Roll. The flow pretty well, but they're closed chamber heads and usually need quite a bit of timing. ARP Head Stud Kit for Tiger Heads. My next shot is a local custom header builder,,, $1100 plus coating OUCH!!!!! 67 Elky techno-resto project. 77 (intake/exhaust, respectively) in performance applications. I would join a few different ones for the best answers. We manufacture and sell more aftermarket aluminum cylinder heads than anyone else. 1966 Pontiac LeMans For $11,995. In the 455, with a RA4 cam, they will pull. Forever Pontiac Forums Gone pontiac heads Formula455's 1973 Formula 455. The front of the engine is stamped 248916 YS. 5:34 · Go to channel · Edelbrock Cylinder Heads. pontiac engine decoder year code c/i hp tran carb car misc 1962 13b 421 3 m 2 x 4 full super duty 1962 13u 421 4 m 2 x 4 full super duty 1962 bu 421 4 m 2 x 4 full super duty 1962 bt 421 4 m 2 x 4 full super duty 1962 89z 195 s 1 tempest 1962 88z 195 s 1 tempest export 1962 87z 195 s 4 tempest spec. Surfers in Huntington Beach decided that 65 people on a surfboard just wasn't enough. Cylinder Head 8-421 3-2BC Fits 65-66 PONTIAC GTO 1044607. Poncho 428 iron D port heads, spark plug question. Shop Cylinder Heads at Summit Racing. PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > #66 heads Reply: Page 1 of 3: 1: 2: 3 > Thread Tools: Display Modes #1 08-18-2019, 08:28 PM 65sport. (NASDAQ:BKKT) shares surged 66. OK, #12 heads were used as RA III heads on both the manual (3-speed & 4-speed cars) with block code WS and the automatic cars with block code YZ - for the GTO The early 1968 RA I heads #31 were D-port. howl's moving castle watch online youtube The '64 head uses pressed-in rocker studs and has no sheetmetal pushrod guideplates as the pushods are guided by machined slots in the head casting, every GTO head up through '66 was made this way. The bore/stroke ratio of a 350 CI engine is terrible and the block cannot be bored enough to take advantage of the #62 heads that were designed for 400 CI engines. You can see how much material iron I removed with a Double Cut Carbide Burr. Performer D-Port Pontiac heads produce outstanding horsepower with excellent low 2. Then, as the rpms increase passed about 3000 or so, the lifters return the cam to full lift and duration. Pontiac discontinued its 400-inch Pontiac V-8 after the 1978 model year, but tens of thousands of 1978 and 1979 Formulas and Trans Ams received with the basic L78 or optional T/A 6. omaha world hearld obits Find Used Pontiac Lemans 1966 For Sale (with Photos). Making 750 HP From A Stock Pontiac Block-With Help From Some Brand-New Roland Racing CV-1 Cylinder Heads. 11" valves are standard issue, the valve seat can be machined to accept a larger valve with minimal work. somiiiasmr The #15 heads you are thinking about have LARGER chambers (87cc nominal) than the #16 heads (78cc nom. Get the best deals on Cylinder Heads & Parts for Pontiac GTO when you shop the largest online selection at eBay. Special OrderLoading Estimated Ship Date: May 17, 2024 if ordered today. 190-4304: Pontiac 400-455 w/ Edelbrock D-Port Head Bolt Kit. While original high-performance Pontiac castings were factory-equipped with 1. It makes for a smooth idle and lots of off idle torque in a 455, which is perfect for a stock convertor. 4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP …. Casting number 9778789 is used for all 1965 389s regardless of final installation. Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Cylinder Heads. Compatibility: See compatible vehicles. Cost is 7 per valve from ferrea. Introducing our Remanufactured 73-79 Pontiac 6. Reply With Quote #16 People seem to forget the louzy right turn of the pontiac head into the chamber and the more radicial turn of the exh compared to to other brands it has to make to get out of the chamber. Blocks cast from 1955–66 have two freeze plugs while the 1967–78 blocks have three freeze plugs. We have ported D-Port heads that run low tens in 3,700 lbs. The #62 Pontiac heads are among the best 1965-1979 Pontiac heads but you should not waste them on a 350 CI engine. To be safe, head swaps should take place only among those of the same generation (Pre-1964, 1964-66, 1967-and-later except 301 and 267). It initially was supposed to have four air intakes (the other two in the valence), but that didn’t make production. The high-end convertible models rang up for just over $3,000. Once done there, go ahead and inspect the driver’s side of the block. It has a standard intake port location, and is compatible with most small-block V8 components. 66” valves and were all pushrod oiled, the rockers oiling through the studs was left behind in 1964. The General Motors LS-based small-block engines are a family of V8 and V6 engines designed and manufactured by American automotive company General Motors. Bolt, cylinder head 85 95 * oil 20 Bolt, flywheel to crankshaft 95 95 dry 40 Bolt, oil pan to block 12 12 dry 4 Bolt, oil baffle to bearing cap 15 15 Pontiac Head Torque Pattern Diagram. Buy used cylinder heads and parts for a Pontiac GTO from top-rated salvage yards. 77 exhaust where as the 6x have 1. Edelbrock Performer RPM heads produce outstanding horsepower with excellent low speed torque and throttle response. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator;. 66-inch valves atop a large 204cc intake chamber with angled spark plugs to bring the fire closer to the piston top. 400 heads on a 350 can work, but you need to make sure there's no interference between the valves and the block. 5 compression while the 093 head has a 68cc combustion chamber for a 10. 6X-8's are approximately 101 to 104 CC's and 6X-4's are around 93-96 cc's. Filthy Rich finds out more info about the Pontiac 400 V8 muscle car engine that came with our GTO before putting it together for the dyno!. Combustion Chamber Volume (cc) 72 (8) 87 (8) 70 (1) Get …. 66-inch valve seats to accept 2. In 1967, the 389 Pontiac engine was enlarged to 400 cubic. The bigger journal on the 455 hurts the rpm's but it does make gobs of torque. abs stimulator fda approved 66 Catalina WHEEL bolt pattern 61-66 Big Pontiac TECH. Cylinder Heads Only** Item #: DSS-2-6104-389. It would be better if you secured …. Save pontiac 614 heads to get e-mail alerts and updates on your eBay Feed. Cylinder Head (24) Items (24) How To Port Flow Test Cylinder Heads Pontiac 326 301 350 389 400 421 428 455. There are so many other Pontiac cylinder heads out that that are already 2. Your dynamic cranking pressure is 180. in fact, ANY Pontiac head will fit ANY Pontiac block. Does the rocker stud boss need to be milled down first before. The 1969 400/428 #46 heads have 1. The first step is to snug all of the fasteners up in the recommended sequence pictured above. Estimated Ship Date: May 17, 2024 if ordered today. One popular choice among homeowners is a refrigerator that stands at 66 inches high. houses for sale with extra house First, the factory 2-speed Powerglide was replaced with a 3-speed TH350. Cam I am running is a lunati 00071 cam. Fel-Pro HS 26190 PT-3 Engine Cylinder Head Gasket Set [G5C] (For: Pontiac) New (Other) $198. 15 (406 ci)-Tri Power Carbs-‘68 #16 heads 2. Streetside Classics Phoenix (866) 650-0345. The 72cc heads on a 455 with a flat top piston is not a good choice for a street driven car. The 061 was the first open chamber head for Pontiac. 1964-75 Pontiac GTO - LeMans - Tempest. Vortec Iron, Scoggin-Dickey Modified PN SD8060A2, $779. I found what appears to be a good running 64 326 with 66 093 heads. I have been trying to research on the web, but I mostly find 65 and 66 rebuilds and head swaps. Heads from 61 to 64 have different water passages, a different bolt pattern, and a different angle where they meet the intake than do the 65 and later heads. Edelbrock RPM heads, SBC, ready to use, used $ 1,700. craigslist personals lexington ky 060" for use of the 400CI pistons having the correct, and matching, valve reliefs for the 670 head. High Performance Pontiac Mag June 05, another fine article by Rocky Rotella on the 70's cylinder heads. 66 Star Chief Executive 57k mile 69 Le Mans 2 dr HT 350 85k mile 15 sec 1/4 69 Firebird 400 Burgandy/Black (3. Pontiac head castings, there are some that they prefer to start with, most notably the well-respected 6X heads from 1976-1979. VEGE (71) Edelbrock (16) ACDelco (13) Chevrolet Performance (5) Get Results; Make/Model. Though other aftermarket companies produced new cast-aluminum Pontiac cylinder heads before Edelbrock, it was the first to produce them on a large scale. of torque (note that all 1971 output ratings are gross, not net). 92” intake, but used the stock 1. I am curious to know how much of a performance difference I can expect if I was to swap heads on my 66 Lemans. Pontiac released a revised cylinder head for its Super Duty engines early in 1963. Here is a link to a good source for decoding pontiac heads. How to install your camshaft using a COMP Cams Degree Wheel kit, which is Part 8 of this Pontiac 400/455 rebuild. 66 heads with smaller chambers for $200-$400 is it worth the extra $ for the big …. When you’re in the middle of a great road trip, sometimes the last thing you want to do is slow down your driving momentum and sit down for a lengthy meal. 73 gears depending on tire height used. With aluminum heads, you can run 10 to one or 10. ARP Bolts 260-4701 FOR Subaru EJ2. ) you have- exactly as stated in the link you provided. threesome subreddit Mar 11, 2019 · I think all Pontiac D-port heads after '71 had 1. The 1970 360HP 455 #15 head would be perfect, chambers are advertised at 87ccs, likely to be around 87 to 90ccs. The valves, rockers, springs, all the hardware, and the Heads themselves were all glass bead blasted and reassembled. That will put the CR around 10. A good port job and conversion to screw in studs and they can be made to perform very well. As time goes on, it becomes increasingly difficul. baller r34 3-bolt flange (21) Ball and socket flange (9) Slip fit (1) Get Results;. 1970 #12 heads came in 2 flavors. The motto of any true Rat Rodder is, speed instead of comfort and nothing shiny. D port heads ported to flow beyond. FWIW, 46 is one of the only late model head ( maybe a 455SD also) that had a 45º valve seat angle. 66) #16 heads with press-in studs were used on some medium performance 400 engines. In 1969 the factory used the same 46 head on all LoPo motors, 400 and 428s. The production Performer RPM cylinder heads feature 2. 093: 66 389 gto: 65: d-port: 670: 67 400 gto: 72: d-port: 97: late 67 ra gto: 65: d-port: all 67 & up heads have 2. Oct 28, 2022 · Ultimate Warrior. 6:1: 256: Manual: 91: 254: 2 bbl: WB. Round Exhaust Port (Ram Air) Port Volume: 215cc/175cc. 0 compression (stock crank, heads shaved a bit to raise comp. Pontiac heads to suit all your restoration and drag racing needs. late 67 ra gto head stamp location on pontiac heads. We Specialize in parts for Classic Pontiacs. **455 SD only fits with SD rods !!! Wrist Pins: 1955-1957, 1958-1962, 1963-1965, 1966-1979: Rings: Interchangeable within same bore size except 455:. Discounted & Multi Model Parts. 500 hp is a pretty stout 400 cid pontiac motor. On some heads you may have to remove the valve cover to find the entire casting number and or the casting date. I don't claim to be one of those "sharp pontiac guys" out there, but from what I can tell, the 670 would be the better head. a man called otto showtimes near cinemark melrose park If your shower isn’t blissing you out, perhaps it’s time to upgrade to a shiny new show. The Edelbrock #9714 Exhaust Valve Seat is a replacement for Edelbrock cylinder heads. Butler Pontiac 400 Rebuild Kit Standard includes Pistons, rings, rod bearings, Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Pontiac Stock Reconditioned 8-Bolt Timing Cover for 1966-67 BPI-1018TC-66-67. item 7 GM Chevrolet Equinox Pontiac Torrent 3. Nov 24, 2023 · Either a '65 or a '66 TriPower setup will flow in excess of 1,100 CFM. 4l DOHC Cylinder Head Bare 12608279. About Contact Parts For Sale 1. 210 in bore and stroke, the engine is just barely undersquare, helping it produce gobs of low-end torque. An X-pipe merges the two head pipes at a junction. 5:1 compression ratio, enlarged 1. I have been unable to definitively figure out what size they are. Our test cars consists of a 7 second rear engine dragster, a back halfed 9 second '66 GTO and a 10 second '66 GTO street car. other special casting information head stamp location on pontiac heads. (NASDAQ:EYES) shares surged 103. 1970 pontiac firebird/transam round port ram air manifolds h/o, ram air iv or for aftermarket edelbrock aluminum heads. 030 you can expect compression to rise by. We were doing the 867's for a couple years before NASCAR allowed the 18 degree heads. Here are the stock and ported flow numbers for intake and exh. You would need hardened seats put in when you rebuild them though. There are four stampings on the 5c's. 3 Duces (3 two barrel carburetors).