1966 pontiac 421 engine specs

10. April 2023 · by · in wreck in siler city, nc yesterday

Only one is known to survive today. The 1979 Firebird model line was the last year for the Pontiac 400, and by this point not only was it required with the 4-speed manual transmission, it also required the WS6 Special Handling Package as mandatory equipment. This new material had stronger alloys in the iron. Power ratings increased accordingly: Several dealer-installed camshafts were optional to increase power further to 317hp (236kW). Pontiac first offered three two-barrel carburetors in 1957 and the Tri-power set up was an option on the GTO from 1964-66. After outselling Oakland, Pontiac became the sole survivor of the two by 1932. Along with proper parts selection, accurate machining and assembly are also important. Given how late in the model year it was, Pontiac decided not to incur the costs of recertifying the SD-455 for other models other than the Firebird. It included a new camshaft with duration increased from 288/302 (No. Year: CU IN: Casting # 1967: 326. This same camshaft was also used in Pontiac's 19691970 RA IV production cars. The 421 used the same 4.120-inch bore but used the 4.0-inch crank from the 421 it replaced. In 1977 the 400-cubic-inch (6.6L) T/A 6.6, (RPO code W72) was created to fulfil the performance engine gap in the Pontiac line-up. The 455 was used through 1976 when it, as with many other large displacement engines, was discontinued as manufacturers moved to smaller, more efficient models, even in their full size car lines. Well, gaze upon these numbersa 421ci Pontiac with Tri-Power carburetion. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. Pistons: Icon PN IC892 application 428 +0.030-in with 10cc dish This 356hp monster is backed by a 4-speed manual transmission, while the Pontiac also features power steering and power brakes. The 389 was the standard engine for the Pontiac Grand Prix and Pontiac Bonneville and installed in the Pontiac GTO through 1966. 301 Turbo (210hp, 157kW), (with the 5th VIN character being a "T". RamAir 4 Motor Price $15500.00. 1965 Pontiac LeMans GTO Mecum. These are general guidelines. The V8 engine was introduced for the 1955 model year as the "Strato Streak". At the request of Ed Cole, general manager of Chevrolet, the layout was also used by the Chevrolet V8 released in 1955, an exception to the customary GM policy of allowing a division one year of exclusive use of an internally developed advance. Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. 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. 1964, 1965, 1966, 1967 Pontiac Catalina 2+2 | HowStuffWorks They acquired the featured Montero Red 1966 Pontiac Catalina post car, which was equipped from the factory with the 421 H.O. Valve lift stayed at just over 0.400-inch with 1.5:1-ratio rocker arms. Price $30000.00. Preparation: Install in rod, torque, measure ID By comparison, the factory 421 H.O. As a result, it was remarkably free of teething problems. The 455 HO designation made its debut in 1970; Rated at 360 or 370hp (268 or 276kW) (depending on which vehicle it was installed into) & 500lbft (678Nm) of torque, it differed from the regular full sized car 455 by large valve heads with smaller combustion chambers, and a larger camshaft. The V8 was phased out in 1981, replaced by GM "corporate engines" such as the Chevrolet 305 cu in small block V8. Metallurgy of the critical parts is an area often overlooked, but not by Jim Taylor. There are no manual transmission equipped Trans Ams that came factory with the standard L78 400 motor in 1977-79. Detroit, however, was reluctant to relinquish its time-tested biggest-car/best-engine formula. Note the tri-color Pontiac Ventura upholstery. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. Pontiac V8 Engine Tune-Up and Torque Specifications. Most Pontiac engines were painted light blue. Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. / 8.3 mpg (U.S.) / 3.5 km/l, more data: 1966 Pontiac Bonneville Convertible . When fitted with other high-airflow components, it produced a good balance of low-end torque and higher-RPM power. Brand: Fel-Pro head and intake/ SCE pan and timing cover Price $15500.00. A big chunk of the appeal of the 1965 and '66 2+2 was the fact that you got a standard 421 under the hood: The 338hp, four-barrel 421-cu.in. The premier SD 421 cylinder head was the late 1962-early 1963 casting #9771980 aka "980", featuring a larger 11.3cuin (185cc) intake port volume, flowing 230cuft/min (6.5m3/min) @ 28in (710mm). By 1963, the more powerful Pontiac 421 was beginning to outshine the 389 for performance applications. Make way for one of the baddest muscle cars of all time, the, An all-aluminum, race-proven V-8 defined the rare and wicked, The engine is what gives a muscle car its flamboyant personality. . With the 1964-1967 Pontiac Catalina 2+2, Pontiac achieved a combination of power, road-holding, and fine styling superior to any other big Pontiac, and most of the competition's models besides. Engines & Engine Parts for 1966 Pontiac GTO for sale | eBay The shaker wore the decals "455 H.O." [5] It was rated at 360hp (268kW), but the Grand Prix with the same specifications was rated at 370hp (276kW).[6]. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. For 1967 only Pontiac called this engine the Quadra-Power 428. release the 421 V8 officially to the general public and the motor would continue to be available until the end of the 1966 model year. Ultimately Pontiac produced only 295 1973 SD-455 Firebirds (252 Trans Am, 43 Formula). Oil pan: 8-quart with extended pick-up, fabricated retention clamp Along with being cheaper to build, this allowed more consistent valve action with less weight than a conventional shaft. Only 630 Bonnevilles were produced for 1957, all of them fuel-injected. Bearings: Sealed-Power mains and rods, cam Dura-Bond Its cast "670" heads had taller valve spring heights than the standard D-port heads, and the only 14-degree valve angle closed combustion chamber making these heads unique. It was implemented as further development of a cost-effective, more fuel efficient V8 derivative of the 301 V8 for the CAFE requirements. The W72 Performance Package also included an upgrade to the rear differential ratio, setting the rear gear ratio to 3.23 for all 1977 and 1979 W72 Firebirds, with the exception being 3.42 for 4-speed equipped W72 Firebirds in 1978 only. Pontiac 421 Tribute to the legendary muscle car engine Balancer: Original PMD rebuilt by Damper Doctor 1962 - 389 SD Code 544127. Pontiac V8 Engine Tune Up and Torque Specifications - WOW Muscle Cars This was underrated at 330hp (246kW). Buckets and a console were added to the top-line Catalina interior, which could be optioned with a sport steering wheel and instrumentation that included a tachometer and oil-pressure gauge. The 326 subsequently became the optional V8 engine for Tempests, and later the Pontiac Firebird, through 1967 and maintained the 17 degree cylinder head valve angle for its entire production run. 455 (7.5) Buick Gran Sport, and 455 (7.5) Oldsmobile 442). Engine Block Date Code. See Consumer Guide Automotive's New-Car Reviews, Prices, and Information. A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability. Often called the "Ram Air III", this engine was officially called the "400 Ram Air" for 1969 and then simply "Ram Air" for the 1970 model year. The 400 HO was offered as an option for 1967-1970 for GTO and 1968-1970 for Firebird. That's the factory rating of the legendary 421 H.O. It featured a smaller bore of 3+34in (95.3mm) coupled with the same 3in (76.2mm) stroke of the 301 (same bore and stroke used by Chevrolet when the first small block motor was introduced in 1955). 1966 Pontiac Catalina technical specifications and data. As Stock drag racing heated up at the dawn of the Sixties, the factories were serving up a constant stream of engines, transmissions and lightweight body par. Pontiac engineers tested their 269cuin (4.4L) V8 in 1949 or 1950 against an OHV Oldsmobile Rocket V8 303cuin (5.0L) downsized to 270cuin (4.4L). A mere five were built, all with a four-speed transmission. Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. Both used a single two-barrel carburetor. Beginning in 1967 casting numbers moved to the rear of the block just behind cylinder #8. Are you thinking of buying a 2007 muscle car, or any other car? Free shipping on many items | Browse your favorite brands | affordable prices. The block is still at standard 421 bore size (4.09375") and will be bored to fit standard size forged 428 pistons (4.120"). Engine Oil: 95 ft-lbs. Model Number: Body/Style Number: Body Type & Seating: Factory Price: . ENGINE. Compression Ratio: 10.6:1 effective 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. It was rated at 376bhp in 1967 and 390bhp in 1968 and 1969. [7] Though listed as slightly less powerful than some high-performance iterations of the 400 (such as the 366hp (273kW) Ram-Air), the 455 had 500lbft (678Nm) of torque, 55 more lbft (75Nm). Method used to retain pins in pistons: . Only about 400 were produced before the fuel injection system was quietly dropped. Manage Settings Coil: GM PDF Pontiac Engine Decoder 1966 Pontiac Engine Data Location Of Engine Code: (Six-Cyl) - On cylinder head-to-block contact surface behind oil filter pipe. 1968 Pontiac GTO 428 / Royal Bobcat. Valve seals: U.S. Seal 1966 Pontiac Catalina Lot S152 1962 Pontiac Super Duty 421 405 HP 4 Speed - YouTube 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. 1966 Pontiac Gto Glendale, Arizona | Hemmings Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. Tested: 1968 Pontiac GTO 428 / Royal Bobcat - Car and Driver Regarding Crower's upgrade suggestions for its . 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. Example: A128 = January 12, 19*8. Not long before the model year introduction, Pontiac management decided that the entire line would be V8-powered. for 1980, and the 8th being a "T" for 1981). Though never factory-installed in any car, the ultimate engine of the Ram Air line of engines was the tunnel-port Ram Air V. In 1969 Pontiac created four versions of the Ram Air V engine: a 303cuin (5.0L) short deck version for SCCA Trans-Am racing, a 366cuin (6.0L) variant for NASCAR, a 400cuin (6.6L) version for street use in GTOs and Firebirds, as well as a 428cuin (7.0L) adaptation for drag racing. Whether all were installed in GTOs is unknown. It was rated at 360hp @4300 RPM in the GTO and 370 @ 4600 RPM in the Grand Prix and other full-size Pontiacs. In the Firebird Ram Air induction for the 400 HO was a separate option for 1969(included with Trans Am) and included with the engine(optional in Formula; included with Trans Am) in 1970. 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. ", https://tran-zam.com/fhistory/1977Engines.aspx, "Hitman's Pontiac Trans Am Site - WS6 and WS7", https://tran-zam.com/fhistory/1978Engines.aspx, https://tran-zam.com/fhistory/1975Engines.aspx, "Unsung Muscle: '75 455 HO Pontiac Trans Am", https://tran-zam.com/fhistory/1981Engines.aspx, "Directory Index: Pontiac/1967 Pontiac/1967_Pontiac_Performance_Brochure", "609ci Pontiac Ram Air V - Chief Stomp 'Em", Pontiac experimental V8 427 Hemi TOHC Tamrazs Parts (800) 442-4601, "McKellar's Masterpiece: The Pontiac Overhead Cam 421 V8", https://en.wikipedia.org/w/index.php?title=Pontiac_V8_engine&oldid=1136467635, Articles needing additional references from January 2010, All articles needing additional references, Articles that may contain original research from October 2016, All articles that may contain original research, Articles needing cleanup from September 2022, Articles with bare URLs for citations from September 2022, All articles with bare URLs for citations, Articles covered by WikiProject Wikify from September 2022, All articles covered by WikiProject Wikify, Articles with multiple maintenance issues, Articles with unsourced statements from December 2008, Articles with unsourced statements from April 2021, Articles with unsourced statements from February 2018, Wikipedia articles needing clarification from April 2021, Articles with unsourced statements from July 2016, Articles that may contain original research from September 2018, Articles with unsourced statements from March 2018, Articles to be expanded from February 2020, Articles with empty sections from February 2020, Creative Commons Attribution-ShareAlike License 3.0, 7.9:1, 8.0:1, 8.4:1, 8.5:1, 8.6:1, 8.9:1, 10.0:1, 10.25:1, 10.5:1, 10.75:1, 11.0:1, Two-barrel carburetor, 7.9:1 compression, 192hp (143kW) @ 4400rpm, 297lbft (403Nm) @ 2800rpm, Four-barrel carburetor, 8.9:1 compression, 216hp (161kW) @ 4800rpm, 315lbft (427Nm) @ 2800rpm, Two-barrel carburetor, 8.9:1 compression, 205hp (153kW) @ 4600rpm, 294lbft (399Nm) @ 2600rpm, Four-barrel carburetor, 8.9:1 compression, 227hp (169kW) @ 4800rpm, 312lbft (423Nm) @ 3000rpm. In 1973 a further refined and even stronger but less powerful version, the Super Duty (SD) engine, was planned for Firebird, Grand Am, Le Mans (GTO), and Grand Prix models. The 421 Super Duty had been the first of these, and their large bore and stoke made them popular in NHRA and NASCAR competition throughout the '60s. Block description: '64 421ci #157 It was factory rated at 366hp at 5,400 RPM and 445lbs.ft. The Armasteel cast crankshaft was the standard hardened cast-iron crankshaft used throughout the entire Pontiac V-8 line until 1967. Engine, horsepower, torque, dimensions and mechanical details for the 1966 Pontiac Catalina. Sponsored Stories . 1966 Pontiac Catalina - Oldride Even more powerful were the 421 Super Duty V8s that could produce up to 410 horsepower. Installed position: 110-deg A three-speed stick was standard; a four-speed and automatic cost extra. Forged steel 6.625in (168.3mm) rods (Ram Air V style), Large-valve heads (valve diameter): 2.4in (61mm) intake, 2in (51mm) exhaust, Small-valve high-RPM head (valve diameter) 2.19in (56mm) intake, 2in (51mm) exhaust. The 2+2 reverted to option status for '67, then died, a proud relic of a time when big cars, Pontiacs in particular, ruled the streets. HPP decided to follow this exciting exercise; we show you the highlights in this two-part primer. Splayed main caps, head bolts tie into main caps. . Primary tube diameter: 1.75-in Based on the same short-deck as the 301, the "LS5" 265.1cuin (4.3L) was offered only in 1980 and 1981. The Pontiac 2+2 is a full size automobile that was manufactured by Pontiac, built on the B-body chassis.It debuted for the 1964 model year as a trim-only option for the Pontiac Catalina, with special door panels, bucket seats with a center console, and exterior badging.Pontiac marketed the 2+2 as the "big brother" to the popular Pontiac GTO.. Beginning in 1965 the name Catalina was no longer . 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. It had 2-bolt main bearing caps in 1969, but went to a block similar to the Ram Air IV's in 1969 that was drilled for 4-bolt main bearing caps (but used a cast crank and cast rods). The 1970 '455 HO' was a conventional "D" port engine. The 421 SD became factory installed in 1962 and in 1963 a street version became available from the factory with a dual four-barrel or three two-barrel Tri-Power carburetion. Available only in the 1973 and 1974 Firebird Formula and Trans Am, the SD-455 consisted of a strengthened cylinder block that included 4-bolt main bearings and additional material in various locations for improved strength. Not where most enthusiasts go first. Also bowing in 1967 was the new Firebird, which had the . Still, it was the strongest American engine offered that year. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. The mighty Pontiac 421 was a star on the drag strip and a super nova on the Nascar tracks of the first half of the 60s. One of the key modifications over the standard 301 4-barrel was the 301 Turbo block. By 1979, Pontiac was no longer allowed to produce the 400 engine as emissions further tightened. The heads were a new design featuring siamesed intake ports. The 301T block was significantly more durable than the standard 301 block and received a thicker bottom end. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS . (V8) - Stamped on right front side of block or beneath production . The 455 HO package was only available to late model year Pontiac Firebird Trans Am's, and was mandatory with a 4-speed transmission. Engine Year Info Spark Plug Plug Gap Point Gap Dwell Angle Timing (BTDC) Idel RPM Manual Tran. Mods: Built to factory specifications/ adapt '64 choke to '66 center carburetor This was the beginning of factory supplied performance items such as 4 bolt main bearings and windage trays to reduce friction from crankcase oil. 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.

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