It featured the "744" 301/313 camshaft, which offered more duration and overlap than the "HO". 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. 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. All GTOs built from 1964-66 were powered by a 389-cubic-inch V-8 with 10.75:1 compression. Pontiac's initial plans were to use a camshaft with specs identical to the 041 Ram Air IV camshaft, but testing showed emissions, while technically compliant, did not have "cushion" to satisfy Pontiac's emissions engineers, to avoid production variation leading to any non-compliant engines being produced and sold. Kits for Pontiac applications. Along with being cheaper to build, this allowed more consistent valve action with less weight than a conventional shaft. 1966 Pontiac Catalina technical specifications and data. Also, a rumored 75 cars were built with non-Super Duty 421 engines rated at 320 bhp. Pontiac differed from other GM Divisions and most other manufacturers in producing only a single small block V8, rather than adding a larger big block to its line-up. The Block Date Code represents the production date of the engine. For '65, the 421-cid V-8 became a standard part of the option package, and for '66, Pontiac made the 2+2 a separate model, still based on the Catalina two-door hardtop or convertible.Flamboyantly styled and expansively proportioned, the 2+2 was unbeatable for sheer presence. A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability. Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. To learn everything you need to know about car engines, see. This test would tend to lend credence to the CAR AND DRIVER and HOT ROD tests of 1973 Super Duty cars with 3.42 gears, no air, and 160lb (73kg) less weight as being representative of production specimens capable of mid to high 13-second passes at 104mph (167km/h). The 421 SD Tri . 301 4-barrel 'W72' or 'ESC' (170hp, 127kW) (with the 5th character of the VIN being a "W" for 1979-1980 and the 8th for 1981). It was rated at 366bhp (273kW) (gross) in the GTO version. 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 . 1962 Pontiac Catalina 421 Super Duty Royal Bobcat - Collector Car Ads Headers: Hooker Super Comp (for dyno test) Pontiac V8 Cylinder Heads - Casting numbers and Specs - WOW Muscle Cars Muscle Cars. The 1970 '455 HO' was a conventional "D" port engine. Rear Main Cap. But the "Ram Air" 400 also mandated steep 4.33:1 gears(or 3.90:1 in Firebird), making the Quadra-Power 400 (400 HO) the top practical street engine option for most drivers. It used a declutching fan, special exhaust manifolds, and chrome low-restriction air cleaners; rocker covers and oil-filler cap also were chrome. PONTIAC : 1965-75Tune-up Specifications : Year: Engine Car Model: Spark Plug Type (AC) - Gap: Point Gap: Dwell Angle: . The 1966 Pontiac GTO was also the first car to replace the aluminum grille with plastic mesh-pattern inserts. 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. 1968 Pontiac GTO 428 / Royal Bobcat. It was rated at 475hp (354kW). [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. cam specs out at 215/225-degrees duration at 0.050 and has just 0.407/0.407 lift with the factory 1.50:1 rockers. In 1967 the 421 was enlarged to 426.61cuin (7.0L) by increasing its bore to 4.12in (104.6mm). 389 Pontiac Engine Build - Restore An Old Car This engine was first offered in 1967 as the top engine option in full-size Pontiacs. Get the best deals on Engines & Engine Parts for 1966 Pontiac GTO when you shop the largest online selection at eBay.com. This was the only Poncho with standard 421-cid power. Unfortunately, that's what happened with the 1963 Pontiac Super Duty 421. The 1981 rendition of this engine was officially called the 301-EC [EC standing for Electronic Controls] in the 1981 GM factory service manual, removing the need for a W72 option separately as it was now the standard motor, similar to how all W72 engines in 1979 were coded L78.[16]. It requires a compression ratio of at least 10.25:1. The compression ratio will be 10.6:1. Oil pump: . Intake manifold: Original '64 PMD tri-power The other major difference between the "typical" Pontiac engine of the time was that this one used the large . Late in the model year the Ram Air 455 HO was made an available option for those GTOs with the optional "The Judge" package. 1962 421 super duty motor Price $30000.00. Pontiac produced the 421 V8 engine from 1961 to 1968. and so the 326 bore size was reduced to 3.72in (94.5mm), giving a true 326.06cuin (5.3L). Year: CU IN: Casting # 1967: 326. The first letter equals the month. 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. Since the story of this 421 is better told in pictures, follow along as we take you on this exciting journey! It featured 3+14in (82.6mm) main journals (which the legendary Smokey Yunick reputedly left Pontiac's engineering department over). The GTO came with a four-barrel 389 V8 with 335 horsepower. A new engine was fast-tracked, its relatively late start allowing it to take advantage of developments proven in the Oldsmobile V8 and Cadillac V8. For a few more ponies through better oil control, a factory full-length windage tray will be added, since Pontiac didn't use one on this engine originally. It is probably best known for it's Tri-power option, which was optional on GTO's from 1964 through 1966.. It was rated at 250hp (186kW) with 8.6:1 compression and 260hp (194kW) at 10.25:1 compression. Coil: GM Preparation: Wash after balance for assembly Likewise, the top 428 carried the same 376-hp rating as the 1966 Pontiac 421 Tri-Power motor. Upon reflection, many did not consider that it was the only large displacement engine still on offer for any performance car on the market, and reconsidered Pontiac's position between the rising CAFE emissions restrictions.[14]. Pontiac V8 Engine Tune Up and Torque Specifications - WOW Muscle Cars Pontiac 389 Engine Guide - Muscle Car Club 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. 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. 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. Lifters: Crower solid with EDM oil hole (0.024 inch) Spiral clip The main upgrade for the engine was the ESC, (Electronic Spark Control)[15] which provided slightly more power at 170hp (127kW) with 4.9L (299cuin) for the 19801981 model years. pontiac 421 complete engine for sale | eBay A mechanical system built by Rochester, it was similar in principle, but not identical, to the contemporary Chevrolet "fuelie". 1966 Pontiac Catalina . [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). A set of Hooker Super Comp headers will be used on the dyno, and Jim is porting the stock heads to increase intake-port flow by 30 cfm. The 421SD was available in 1961 as a dealer option or over the counter then in 62 and 63 from the factory, and was fitted with a list of internal modifications designed solely to withstand the abuse of drag racing. And it cruised silently and rode with less harshness than muscle intermediates. Beep, beep! For 1971, Pontiac introduced another High Output (HO) version with standard internal parts, a reinforced block with four-bolt main bearing caps, and improved cylinder head design with 18-inch taller (3.2mm) intake ports and special round exhaust ports for better breathing, yet still making just 335hp (250kW) gross (or 310hp (231kW) in the more accurate SAE Net system). There were 11 different Pontiac V8 engine options for 1966, starting with the 326-cid 250-hp Tempest base V8. Also bowing in 1967 was the new Firebird, which had the . Pontiac in the 1950s was one of a few US manufacturers that did not regularly identify their engine names and sizes with air-cleaner or valve-cover decals. There was also the addition of dual exhaust, and for vehicles equipped with a manual transmission, a slightly more aggressive camshaft. Most Pontiac engines were painted light blue. [19] The cylinder head design is similar to the Ford FE tunnel-port head used in the GT40 and Can-Am series racing. 455 (7.5) Buick Gran Sport, and 455 (7.5) Oldsmobile 442). Pontiac V8 Engine Tune-Up and Torque Specifications. The Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. Standard only for the Pontiac Bonneville was Pontiac's first-ever fuel injection system. SELLER Glendale, Arizona 85305. Manage Settings [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. Wearing a revised GM B-body semi-fastback shape, the 2+2 option delivered a 421-cu.in. Muscle cars wouldn't have much muscle without horsepower -- but what exactly is horsepower? 1966 Pontiac Grand Prix - conceptcarz.com It shared the 4.121in (104.7mm) bore of the 400, but with a 2.84in (72.1mm) stroke for a displacement of 303cuin (5.0L). 1966 Pontiac Gto Glendale, Arizona | Hemmings Other dimensional factors such as the wheel base, curb weight and length were largely unchanged. A mere five were built, all with a four-speed transmission. The engines feature a cast-iron block and head and two valves per cylinder. cam specs out at 215/225-degrees duration at 0.050 and has just 0.407/0.407 lift with the factory 1.50:1 rockers. Standard ratio with the 400 was 3.55:1(except 3.36:1 in Firebird for 1969) regardless of transmission(3.23:1 for cars with air conditioning). The main innovation of the Pontiac engine was reverse-flow cooling and the stamped rocker-arm system, which had been devised by Pontiac engineer Clayton Leach in 1948. Bonafide Muscle: 1965 Pontiac 2+2 Buyer's Guide | Hemmings 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. Update your shipping location. All 1977-1978 Trans Ams ordered with the 4-speed Borg Warner Super T-10 manual transmission received the W72 T/A 6.6 engine. Information and specs for the Pontiac 421 V8 engine. moniker from the shaker due to the disappointing public approval as the motor was not deemed to be "High Output". Along with the HO it also had Pontiac's famous cast-iron "headers", which were much better at reducing backpressure than the regular manifolds. Pontiac offered Tri-Power on select models and engines (347, 370, 389, and 421 CID) from 1957 through 1966, when it was finally . Perhaps the most unusual variation of the Pontiac V8 was the 1961-63 Trophy 4, which was a 45-degree inclined 194.43cuin (3.2L) inline-4 created from the right bank of the 389 for the debut of the Tempest. 1966: 421: 9782611 (late) 1967-1969. SB International 00958 1963-1966 Pontiac 389 421 Engine 1.920" Intake Valves (Fits: 1966 Pontiac GTO) $7.98. The initial press cars that were given to the various enthusiast magazines (e.g. The company says engines running this cam benefit from headers, cylinder-head port work, a large-cfm carb, and an ignition upgrade. The short-deck block and different intake ports also required the design of a new intake manifold. That's the factory rating of the legendary 421 H.O. The 301 had a bore and stroke of 4in 3in (101.6mm 76.2mm). The goal of making a Pontiac Hemi succeeded but the engine was never produced. The SD-389 was limited to a single 4-barrel while the SD-421 used dual 4-barrels. 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). 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 . Are you thinking of buying a 2007 muscle car, or any other car? Engine Year Info Spark Plug Plug Gap Point Gap Dwell Angle Timing (BTDC) Idel RPM Manual Tran. Here is another number to ponder: 370 hp. 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. Super Duty 421s were back, tougher than ever. Maximum flow at 28 inches of water 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. The 428 was factory installed in large cars only. Most likely prompted by its development of the Pontiac OHC six, the GM division built three different experimental SOHC 421 CID V8 engines in the early 1960s. . 1964, 1965, 1966, 1967 Pontiac Catalina 2+2 | HowStuffWorks
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