SPECIFICATIONS. Pontiac V8 Engine Codes and Specifications. Also, a rumored 75 cars were built with non-Super Duty 421 engines rated at 320 bhp. Modified versions of this engine were extensively used in NASCAR stock car racing and drag racing competition. Under the leadership of chief engineers Pete Estes and John DeLorean, Pontiac engine guru Malcolm "Mac" McKellar (1920-2011) and crew developed the Super Duty 389 and 421 NASCAR engines that embarrassed the Fords and Chevrolets at Daytona. Well, gaze upon these numbersa 421ci Pontiac with Tri-Power carburetion. In addition to the inline 6, Pontiac used the Oakland V8 for one year, 1932, debuting the Pontiac straight-8 engine in 1933. Offered on select models from 1957 through 1966, Pontiac's Tri-Power induction system added a new dimension of performance to the General Motors brandand a colorful new term to the hot rodder's vocabulary. It included a new camshaft with duration increased from 288/302 (No. Two-barrel carburetor, 8.5:1 compression, 227hp (169kW) @ 4600rpm, 333lbft (451Nm) @ 2300rpm, Four-barrel carburetor, 10:1 compression, 244hp (182kW) @ 4800rpm, 350lbft (475Nm) @ 2600rpm, Two-barrel carburetor, 10.0:1 compression, 244hp (182kW) @ 4800rpm, 350lbft (475Nm) @ 2600rpm, Four-barrel carburetor, 10.25:1 compression, 270hp (201kW) @ 4800rpm, 359lbft (487Nm) @ 2900rpm. 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 . A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. Paul Stenquist. Jets, Primary: Center #64 adjust power valvespring for 12 Hg at 1,000 rpm And it cruised silently and rode with less harshness than muscle intermediates. With A/C On, Engine Hot: 421: 1966: With Tri-Carb, With Air Injection reactor: 45S: 0.035: From a performance perspective, the 2+2 is pretty impressive. In light of this, the 'Year' entry, as indicated by the chart below, may actually represent the year that the heads were cast, versus the year that they were actually installed on an automobile. Along with the HO it also had Pontiac's famous cast-iron "headers", which were much better at reducing backpressure than the regular manifolds. The 421 SD Tri-Power engine offered during these years produced the highest horsepower of any motor in the Pontiac V8 lineup at 376 bhp. 301 2-barrel (135hp, 101kW), (5th character of the, 301 4-barrel (150hp, 112kW), (5th character of the. See Consumer Guide Automotive's New-Car Reviews, Prices, and Information. 1968 - 400 Ram Air I and 428HO Code 37" Ram Air I and. A period-correct battery cranks the high-compression 469-cubic-inch Pontiac engine. aluminum V8 it had offered in the Tempest and replaced it with a small-bore version of the standard 389cuin (6.4L) Pontiac V8. Boost was wastegate limited to 91psi (0.6210.069bar). Secondary: Front and rear #70 The engine compartment of this concours Catalina is beautifully finished. Engine Oil: 120 ft-lbs. One version of the engine featured camshafts driven off the front of the engine, another design had the cams driven by gears off the back of the engine. The concept car Pontiac Strato-Streak was used to introduce the V8 and in later years the engine was installed in Pontiac products. The XS-code 389 was still rated at 360bhp at 5,200 rpm, same as the more common WS-coded Tri-Power 389, but performance was noticeably improved on acceleration runs. Only about 400 were produced before the fuel injection system was quietly dropped. Optional power was the 421/356 with Tri-Power or the 421 HO putting out 376 horses with Tri-Power. The Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. Muscle cars wouldn't have much muscle without horsepower -- but what exactly is horsepower? Read. The 421 badging was standard on the 2+2, the 421 H.O. As Pontiac still wanted to offer a performance motor to compete in the performance market, they looked back to the 400 Pontiac and how it could be improved to offer greater performance while meeting CAFE standards. The Ram Air IV replaced the Ram Air II in 1969. Engine Year Info Spark Plug Plug Gap Point Gap Dwell Angle Timing (BTDC) Idel RPM Manual Tran. Pontiac V8 Engine Tune-Up and Torque Specifications. Ultimately Pontiac produced only 295 1973 SD-455 Firebirds (252 Trans Am, 43 Formula). HPP decided to follow this exciting exercise; we show you the highlights in this two-part primer. Preparation: Weigh, soap-and-water wash Head ID Location Along with a cam swap it boosted horsepower from 325 hp with the four-barrel carb to 348 hp in '64. Update your shipping location. Brand: Fel-Pro head and intake/ SCE pan and timing cover The 301T block was significantly more durable than the standard 301 block and received a thicker bottom end. Duration at .050: 247/252-deg This 1966 Pontiac 2+2 Convertible is a beautifully restored big-block convertible that is ready for some boulevard cruising! The inlets were all well within the boundary layer that exists close to the surface, so all of these systems would more accurately be described as "outside air induction" systems, benefiting from the intake of cooler, and thus denser, outside air versus the comparatively hotter and less dense air under the car's hood. Jim Taylor, well-known Pontiac engine builder, had that question on his bucket list for years. . [8] All of these improvements provided the W72 with a power rating of 200hp (203PS; 149kW) at 3600 rpm and 325lbft (441Nm) of torque at 2400 rpm, while the standard L78 400 only produced 180hp (182PS; 134kW) at 3600 rpm and 325lbft (441Nm) of torque at 1600 rpm. 1962 Pontiac Catalina, Royal Bobcat Super Duty 421. This simply meant that Pontiac installed both the SD-389 and SD-421 into vehicles on its assembly line. The SD-455 motor was listed as an option in dealer brochures for the 1973 Grand Am and LeMans GTO(and planned for the Grand Prix as well) although none were produced for sale. Located at the back of the engine near the Distributor. It was rated 180hp (134kW) @ 4600rpm and 264lbft (358Nm) @ 2400rpm with a two-barrel carburetor, 200hp (149kW) @ 4600rpm and 278lbft (377Nm) @ 2800rpm with the four-barrel carburetor. If you've been thinking about cruising the local boulevard in a classy convertible, but find yourself longing for the power under the hood that only a muscle car provides, perhaps it's time to take another long look at Pontiac's restyled 1965 Bonneville convertible. A concave rear window, fender skirts, and ribbed die-cast lower body trim, augmented the Grand Prix's upscale appearance. This may have been propagated by the only authorized company that is licensed to reproduce these decals not including the "6.6 LITRE" in the Trans Am decal kits, and only including "T/A 6.6" with no extra cost. The heart of the build, a code 45B 1964 421 HO 370 HP manual trans 4-bolt main block, all Pontiac 421 engines without exception had 4-bolt main caps. Price $30000.00. Engine options for the 1966 Pontiac Ventura were a 389 and 421 cubic inch V-8. The Pontiac V8 engine is a family of overhead valve 90 V8 engines manufactured by the Pontiac Division of General Motors Corporation between 1955 and 1981. 1969 - 400 Ram Air III or 350HO Code 48. It retained the 421's 4in (101.6mm) stroke and 3+14in (82.6mm) main journal. Styling for Status. 1966 Pontiac Catalina . Unfortunately, there were no improvements in the casting number "01" small-valve high-velocity heads, which would have yielded greater improvements in power. The 301 Turbo was unique since it had a beefier block than the 197779 versions (which carried on in the non-turbo versions in 1980 and 1981), a very mild camshaft with 0.35in (8.9mm) lift and 250 degrees gross duration, a 60psi (4.1bar) oil pump to ensure adequate oil to the oil-cooled Garrett TBO-305 Turbocharger, a rolled fillet crankshaft, a fully baffled oil pan, and a specific 800cuft/min (23m3/min) Quadrajet carburetor. VEHICLE TYPE . In 1973 Pontiac started stamping extra numbers (1/4" tall) on their heads.These head numbers represented chamber sizes.They are usually stamped on the machined pads by the valve covers. It added '421' engine badges on the front fenders, 2+2 insignia on the deck lid and rear fenders, and simulated louvers behind the front wheel cutouts. [citation needed] It was the first engine that incorporated Pontiac's round-port head design in a production vehicle, however the intake port was the same as other D-port heads, leaving a head which exhaust port could nearly match the intake at high valve lifts. Besides a variety of displacements, the Pontiac V-8 block saw a number of other changes over the years, including starter locations, main-journal diameters, engine-mounting points, and . Approximately 6,000 2+2's were built in 1966, the only year the 2+2 was its own model. For the truly obsessed, 16 Grand Prixs were built with Pontiac's 421 Super Duty engines, rated at a staggering 370 bhp. The piston weighs 630 grams with the pin versus the stock piston and pin weight of 790 grams. Known as GM's performance-oriented division, Pontiac lived up to the hype by creating the first Muscle Car and kicking off the Muscle Car era. The 455 HO moniker was again carried over, this time as a near-exact repeat of the 1971 offering, the only changes were the carburetors (they used a conventional 750cuft/min (21m3/min) unit this year), and the head castings (casting #7F6). SB International 00958 1963-1966 Pontiac 389 421 Engine 1.920" Intake Valves (Fits: 1966 Pontiac GTO) $7.98. Today, they have an average value of $430,000 in #3 (Good) condition, while the best in the world is worth about $550,000. Pontiac RAIII/IV Engine parts collection Price $14000.00. Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. Free shipping on many items | Browse your favorite brands | affordable prices. Keepers: Comp Cams race locks Now select an engine model (if applicable) -- Pontiac Engine Models -- All Pontiac Kits 151 301 326 350 3800 389 4-cylinder 400 421 428 455 Brodix Heads Edelbrock Heads Iron Duke L67 Pro Stock Dart Heads Pro Stock Heads Ram Air Runner Heads Super Duty Generic V8. Though a change of camshaft would delay production, Pontiac decided to change camshaft, employing one with identical timing to the 744 camshaft, which had been used in the 400 Ram Air(aka Ram Air III) engine with manual transmissions. 540306 featured 1.92/1.66-inch (49/42mm) valves and was carried over from the previous model year, production stopped in March 1962 and then casting No. For 1970 the Trans Am was the only Firebird available with the Ram Air IV, and 88 were produced during the abbreviated 1970 F-body production run. The engine build will be discussed in two parts. The most famous S/D of them all. The "455 HO" moniker took on a whole new meaning with the introduction of the 1971 model year; Intended as a low compression progression from the previous years Ram Air IV engine, all 1971 455 HO engines used a heavy duty 4 bolt main block, round port cylinder heads (casting #197; with 8.4: compression), "Ram Air" style exhaust manifolds, and a two-part aluminum intake manifold. Royal Pontiac developed the prototype of the package on their 1965 GTO drag car and Pontiac picked up the idea and in August 1965 Pontiac offered the new Fresh Air package to dealers consisting of the parts and instructions needed to make the hood scoop functional, including the metal tub to mount to the carburetors and rubber gasket to seal it to the underside of the hood. Offered from 1967 to 1969, it produced 360 and 376hp (268 and 280kW) in 1967, 375 and 390hp (280 and 291kW) in 1968 and 360,370 and 390hp (268,276 and 291kW) in 1969. 1967 was the last year for closed-chambered heads. While not related to the 400 W72, the concept was the same. Coil: GM 1966 Engine Codes ; Code: Application: Displacement: Compression: Horsepower: Transmission: Heads: Camshaft: Carb: WA : 389: 8.6:1: 256: Manual: 91: 254: 2 bbl: WB . Pontiac still offered the regular 455 (RPO L75) in its full sized cars, and after a negative public reaction for dropping the 455 engine, it was re-introduced mid-year as an available option for the 1975 Pontiac Trans Am. This was a project started with the end goal of building a 427 Hemi. See profiles, photos, and specifications of, Muscle cars came in many shapes and sizes. [9], The W72 engine was standard in all 1977 Pontiac Can Ams (bar the 1977 Can Ams sold in California/High Altitude states which received the L80 Oldsmobile 403) and was optional in all 1977-79 Pontiac Firebird Formula and Trans Am models. Pontiac's V8s share the same 6.625in (168.3mm) connecting rod length, with the exceptions of the later short deck 301, 265, and 303 Ram Air V. Most Pontiac V8s had an overall length (to the edge of the water pump pulley) of 28.25in (718mm), an overall width of 27in (690mm), and a height (not including air cleaner) of 31in (790mm). 1965-75 Pontiac & Tempest engine tune-upspecifications including timing, dwell angle, and Spark Plug Gap, and firing order. In the early '60s, the engine program at the Pontiac division of General Motors was a wide-open operation that bustled with innovation. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 1968 Pontiac GTO 428 / Royal Bobcat. Ram Air induction was optionally available with the 455 HO in the Firebird Formula(standard on Trans Am), GTO (standard with "The Judge" package), and 2-door LeMans Sport when the T41 Endura Styling Option was also ordered. 744) and a new valve spring package with dampers to positively control valve action. Transistorized ignition was available. Standard in the Firebird Trans Am, it was still a rare engine. It was implemented as further development of a cost-effective, more fuel efficient V8 derivative of the 301 V8 for the CAFE requirements. Angles used in valve job: 30-deg intake, 45-deg exhaust seat, width 0.040-in intake, 0.060-in exhaust It was factory rated at 366hp at 5,400 RPM and 445lbs.ft. Installed position: 110-deg Fuel pump: Will use 110-gph Carter Calling into play enormous power and a decent 55/45 weight distribution, the 2+2 could be launched with little tire spin and guided through corners with alarming efficiency. The Pontiac 2+2 was promoted as the "big brother" to the iconic Pontiac GTO. The 1963 Catalina two-door sports sedan pictured here showcases the 421 H.O. None of Pontiac's Ram Air engines actually enjoyed any true ram air effect. Engine Oil: 95 ft-lbs. What is important is the total timing, the . The Ram Air IV heads had 1/8" taller intake ports, larger intake port volume with more airflow, yet shared the Ram Air II round exhaust ports. The engine was dubbed the TEMPEST V-8, a nickname it retained until the end of 1960. If you enjoy the videos and would like to Sponsor me on Patreon, my Creator link is https://www.patreon.com/MyCarStoryWithLouOn "My Car Story" we're in Huntl. The 301 had a bore and stroke of 4in 3in (101.6mm 76.2mm). It was rated at 376bhp in 1967 and 390bhp in 1968 and 1969. All 428 cylinder heads received the 14 degree valve angle, closed chamber only in 67 and open chamber 68 and up. Stating in 1962 the "421" and the "421 SD" engine became available as a factory option until 1966. These guys lived by mathematics since every function of an engine that converts chemical to mechanical energy can be assigned a number. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Pontiac Catalina Vista 421HO Trophy V-8 Tri-Power 4-speed in 1964 the model with 4-door hardtop sedan body and V-8 6902 cm3 / 421.2 cui, 276 kW / 375 PS / 370 hp (max) offered since October 1963 for North America U.S. special version. Based on the same short-deck as the 301, the "LS5" 265.1cuin (4.3L) was offered only in 1980 and 1981. For 1965, however, the 2+2 became a bonafide muscle car. Prices ranged from $2,760 to $3,220 . Surprisingly, Mopar actually agreed and sent over several of the engineers that designed both the 392 and 426 Hemi. To learn everything you need to know about car engines, see. Tri-power engine rated at 376 hp. Beginning in 1967 casting nnumbers moved to the rear of the block just behind cylinder #8 . Like the 421, the 428 used a large-journal crankshaft, but externally it was the same size as all Pontiac V-8s of that era (the later 301 used a shorter deck height). Simply called "Ram Air" by Pontiac[17] it was the first in a series of engines available from Pontiac as regular production line options and officially called Ram Air. Vacuum advance: Not usedEXHAUST The W72 package was a standalone option, and although was discounted when ordered in conjunction with the Y82/Y84/Y88 Special Appearance package, did not come included with Special Edition Trans Ams, it remained an extra cost option. Only about 2000 like this one were built with 4 speed Muncie transmissions. Returns; . It was removed from the design for the 1960 model year because designers moved the generator and the power steering pump from atop the front of the engine down to the front of the heads to accommodate a lower hoodline. Ram Air induction was optional in the GTO, though power ratings were unchanged. Cougar pulled out of Mustang's shadow with the striped and spoilered 1969 Mercury Cougar Eliminator. Headers: Hooker Super Comp (for dyno test) Crower identifies this cam as a Level 4, which means it provides strong midrange and top-end power for heavily modified engines. One of the key modifications over the standard 301 4-barrel was the 301 Turbo block. Preparation: Magnaflux, check for equal stroke and index, grind, polish 0.010-in The W72 also featured a camshaft with a higher duration, finer tuned 800cfm Rochester Quadrajet, insulated fuel line, larger 60PSI oil pump, chrome valve covers, a larger harmonic balancer, and the "T/A 6.6" Shaker decal. Beginning in 1967 casting numbers moved to the rear of the block just behind cylinder #8. The 1971 455 HO was available in the Firebird (optional in Formula; standard in Trans Am), the GTO (standard with "The Judge" package), and the 2-door LeMans, LeMans T-37 (including GT-37), and LeMans Sport. Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke With higher compression and dual exhaust it produced 280hp (209kW) for 19631964, and 285hp (213kW) for 1965 through 1967, its final year. Save pontiac 421 complete engine to get e-mail alerts and updates on your eBay Feed. Pushrods: LPC chrome moly The 303 had shorter connecting rods, smaller 2.5in (64mm) journals and a solid lifter version of the Ram Air IV camshaft. Ever wonder what it would take to increase that number by 100? This money bought a potent 389 V-8 with 267-283 bhp . It had a four-barrel carburetor, dual exhaust, and higher compression, and was good for 280hp (209kW) for 19631964, and 285hp (213kW) for 1965 - 1966 and the final year, 1967. Year: CU IN: Casting # 1967: 326. While production of 196970 A-body Ram Air IV cars was low at just 1563 units(759 1969 GTOs including 302 Judges, and 804 1970 GTOs including 397 Judges) 1969 and 1970 model year F-body Ram Air IV cars were even rarer at just 245 total units produced. All L78 Pontiac 400 equipped cars received the same shaker decal as the L80 Oldsmobile 403, being "6.6 LITRE". $6.49 shipping. #9770716 aka "716" heads featured a 170cc intake port volume, and were considered a milder "street" version of the vaunted SD421 Super Duty heads. Required airflow at 28 in/H2O = HP/ # of cylinders/0.257 For those who may not be familiar with the equation, here it is again: Some production test cars ran considerably slower and yielded 14-mile (402m) times in the 14.5 second/98mph (158km/h) range in showroom tune (uncited sources)- results that are quite consistent for a car with a curb weight of 3,850 pounds (1,746kg) and the rated 290hp (216kW) SAE NET figure that some sources suggest was "under-rated." What was most interesting about the 421 engine in the beginning was that it was a dealer installed option only known as the SD (Super Duty) 421. Optional was the obligatory four-speed manual or new-for-1965 Turbo-Hyramatic three-speed automatic. Brand: Crower PN 60311, solid In the 1968 Pontiac GTO it was given a 10.75:1 compression ratio and tuned to deliver 360 horsepower and 445 foot-pounds of torque.[2]. The base engine was the 421 four-barrel with 338 horsepower. Likewise, the top 428 carried the same 376-hp rating as the 1966 Pontiac 421 Tri-Power motor. Bore and stroke were 4.121in 2.84in (104.7mm 72.1mm) 303.63cuin (4,976cc). As a result, peak horsepower dropped from 310 to 290, though torque increased from 390 to 395lb. Starting at the bottom, Jim will employ lighter and stronger parts in the reciprocating assembly, as evidenced by the choice of Howards billet rods and forged Icon pistons. Block casting # 9773157. Ellingson Motorcars (877) 638-7170. First offered as an option in 1963, the 421 HO came in a 4-barrel engine of 320hp (239kW) and one Tri-Power H-O version with a hotter cam and efficient iron exhaust manifolds and rated at 370hp (276kW). High output Pontiac V8 Cylinder Heads. Standard motor was the 421 4 barrel with 342 horsepower, which was no slouch itself. The 1980 301 Turbo was rated at 210hp (157kW) at 4400rpm and 345lbft (468Nm) @ 2800rpm. Beep, beep! The Block Date Code represents the production date of the engine. This was the last run for the 455 (7.5 L) motor from Pontiac, and production ceased on the 455 this year as it could no longer meet the emissions requirements any longer. Special Offer on Antivirus Software From HowStuffWorks and TotalAV Security. Where else will the extra 100 horses come from? Though production cars only got the two hood air inlets the name was retained. It is probably best known for it's Tri-power option, which was optional on GTO's from 1964 through 1966.. Laconic would be one way to describe this Pontiac's eBay listing, all it states is, "1966 Pontiac Ventura, 421 Tri-Power, 4 speed Runs/ Drives Great, Very Clean - Garage Kept".OK then, now you know what I know. This was based on results of over 1 million test miles, which was unheard of at the time. The engines feature a cast-iron block and head and two valves per cylinder. The 421 engine is available only with related heavy-duty driveline components. An example of data being processed may be a unique identifier stored in a cookie. The first letter equals the month. Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. 1966: 421: 9782611 (late) 1967-1969. Forged rods and forged-aluminum pistons were specified, as were unique high-flow cylinder-heads. It was rated at 366bhp (273kW) (gross) in the GTO version. Muscle Cars. The next 1 or 2 numbers represent the date, and the last number is the year. 400 Ram Air (1969) / Ram Air (1970), aka Ram Air III, Learn how and when to remove these template messages, Learn how and when to remove this template message, "Tested: 1968 Pontiac GTO 428 / Royal Bobcat", "1969 Pontiac Grand Prix 428 specifications | technical data | performance | fuel economy | emissions | dimensions | horsepower | torque | weight", "Muscle Car Horsepower How Exaggerated Was It? Setting initial timing at idle with the vacuum advance disconnected will usually fall around 12 to 16 degrees, but that's not really important. Pontiac engine production records report that 190 XS-code 389 engines were built during the 1966 model year. The last "true" Pontiac V8s, a 265 and 301cuin (4.3 and 4.9L), ended production in early 1981. According to the engineers who worked on the project, the SOHC 421 engines produced around 625hp and were capable of turning 7,000 rpm. It used the "744" camshaft (301-313) in the earlier manual trans versions, later downgraded to the "068" version, and the 288/302 duration cam with automatic transmission. Information and specs for the Pontiac 421 V8 engine. The 1969 HO 350 HO was equipped with the 400cuin (6.6L)'s large valve heads (# 48's) and the 400 HO camshaft and rated at 330hp (246kW). Every torque specification should be in this table, however if there is one missing, please Contact Me and I will get you the spec and add it to the table. By 1949 work on a 287cuin (4.7L) OHV V8 had begun, but moved along slowly. . Hewing to GM's standing edict limiting engine size to 400 cu in for its midsize and smaller cars, the 360hp (268kW) (underrated),[citation needed] the 400 cubic inch Ram Air V-8 was the most powerful and advanced option available in the 1967 GTO and Firebird. The standard head seen on an L78 400 Pontiac was the low compression 6x8 head, while the 6x4 head seen on the W72 had hardened valve seats for a higher RPM operating range, improved air flow, and higher compression. Compression jumped from 11.0:1 to 12.0:1, while other tweaks increased maximum shift points by 500 rpm, to a screaming 6400 rpm. It was rated at 360hp @4300 RPM in the GTO and 370 @ 4600 RPM in the Grand Prix and other full-size Pontiacs. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered.