As a result, it was remarkably free of teething problems. Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. Distributor: '61 Delco cast-iron with direct oiling SELLER Glendale, Arizona 85305. 1969 - 400 Ram Air III or 350HO Code 48. in., again available only in the GTO and Firebird. The 400 2-barrel kept the 17 degree valve angles for '67; starting in '68 all Pontiac V8s went to the 14 degree valve angle. aluminum V8 it had offered in the Tempest and replaced it with a small-bore version of the standard 389cuin (6.4L) Pontiac V8. 1963 Pontiac V8 Engine Specs. Displacement began at 287-cubic-inch (4.7L) and grew as large as 455-cubic-inch (7.5L) by 1970. The two inline engines were used through 1954, when Pontiac unveiled its OHV Strato Streak V8 in 1955. The W72 301 was a tuned L37 301 Pontiac V8 with some minor upgrades. It was rated at 376bhp in 1967 and 390bhp in 1968 and 1969. The 421 engine is available only with related heavy-duty driveline components. Rear Main Cap. It was rated at 360hp @4300 RPM in the GTO and 370 @ 4600 RPM in the Grand Prix and other full-size Pontiacs. The GTO's new hood scoop design, with the inlets centrally located and mounted above the carburetor, provided the opportunity for experimentation. After the 1974 SD455 was dropped the 1975 Firebird's top performance engine was an 'L78' Pontiac 400cuin (6.6L). Secondary: Front and rear #70 (V8) - Stamped on right front side of block or beneath production . The last "true" Pontiac V8s, a 265 and 301cuin (4.3 and 4.9L), ended production in early 1981. 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). At the end of 1976, Pontiac was no longer able to continue production of the 455 (7.5 L) V8 motor due to the tightening emissions requirements. Tri-Power equipped Pontiac hot roda stout piece by anyone's standards. Pontiac had prepared for the forthcoming cancellation of the venerable 400 by producing large volumes of the stronger cast "XX" 400 blocks in 1977 that were assembled in 1978, and stockpiled at a warehouse by the assembly plant for later use. 18 watchers From 1977 to 1981 there were 4 distinct 301 versions: For 1981 model year vehicles, the engine codes are the 8th digit of the VIN. The base engine was the 421 four-barrel with 338 horsepower. When fitted with other high-airflow components, it produced a good balance of low-end torque and higher-RPM power. One of the key upgrades were the 6x4 heads. 10 with 308/320 degrees of duration and 0.445/0.447-inch lift (11.3/11.4mm) with 1.65:1-ratio rocker arms and solid lifters, special #529238 forged-steel connecting rods, forged aluminum 4.09-inch (104mm) bore Mickey Thompson pistons, #542990 forged-steel crankshaft with a 4-inch (101.6mm) stroke and 3+14-inch (82.6mm) diameter main journals. . Coil: GM . The SD-389 was limited to a single 4-barrel while the SD-421 used dual 4-barrels. Pontiac engines were used in its U.S.-market cars; Canadian-built Pontiac automobiles generally used Chevrolet engines. NASCAR race cars embody the muscle car philosophy of power. Idel RPM Automatic In Drive Notes; 326: 1964: 45S: 0.035: . 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. It retained the 421's 4in (101.6mm) stroke and 3+14in (82.6mm) main journal. 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. 301 2-barrel (135hp, 101kW), (5th character of the, 301 4-barrel (150hp, 112kW), (5th character of the. The manuals had Hurst shifters. Mods: Built to factory specifications/ adapt '64 choke to '66 center carburetor Mods: Flow-test indicated '66 center carburetor would be required to improve total cfm, adapter made to fit '66 center carburetorIGNITION The Catalina was the base intermediate-sized Pontiac resting on a 121-inch wheelbase that it shared with the Safari and the Grand Prix. Muscle cars wouldn't have much muscle without horsepower -- but what exactly is horsepower? like the earlier 1971-1972 motor, but it was not the same motor, and featured standard d-port heads with a very conservative camshaft. . 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. said the "Pontiac 421 cu. The goal of making a Pontiac Hemi succeeded but the engine was never produced. Wearing a revised GM B-body semi-fastback shape, the 2+2 option delivered a 421-cu.in. The W72 offered many improvements over the standard L78 400 Pontiac. Along with proper parts selection, accurate machining and assembly are also important This is the original car featured in the May 1962 issue of Motor Trend Magazine that was modified by Royal Pontiac and driven by Jim Wangers. 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. engine, dual exhausts, three-speed manual transmission, Hurst shifter, 3.42:1 rear gears, heavy-duty suspension, bucket seats, upgraded upholstery, carpet, emblems, "Decor" louvers, pinstripes, lower . 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. 1968 - 400 Ram Air II Round Port Code 96. The last was the 421 HO and included a high-output camshaft and valve train. Optional was the obligatory four-speed manual or new-for-1965 Turbo-Hyramatic three-speed automatic. With a view to the latter, what we find lurking under the hood is the 421ci Tri-Power V8. 1966 Pontiac Ventura Specifications. Federal emissions standards and the drive towards "corporate" engines shared among all GM divisions led to the progressive demise of the Pontiac V8 through the late 1970s. Pontiac produced the 421 V8 engine from 1961 to 1968. Casting number: 97770716, '64 date Pontiac Engine Torque Specs Pontiac Engine Torque Specs. The fuel-injected engine became an option on any Pontiac model, carrying a staggering price tag of $500 (almost 15% of the car's base price). Pontiac V8 Engine Tune-Up and Torque Specifications. They came up with a 269-cubic-inch (4.4L) L-head design. Two different cylinder-head castings were used for the 1962 model year, both with a combustion chamber volume of 68cc (4.15cuin) to produce an 11.0:1 compression ratio. For those who may not be familiar with the equation, here it is again: Example: A128 = January 12, 19*8. 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]. Late in the model year the Ram Air 455 HO was made an available option for those GTOs with the optional "The Judge" package. The valve size increased as well, to 2.11in (53.6mm) intake and 1.77in (45.0mm) exhaust valves on high-performance heads. For 1956 the V8 was bored out to 3.9375in (100.01mm), increasing displacement to 316.6cuin (5.2L). Engine, horsepower, torque, dimensions and mechanical details for the 1966 Pontiac Catalina. Casting No. Preparation: Magnaflux, check for equal stroke and index, grind, polish 0.010-in This 1966 Pontiac 2+2 Convertible is a beautifully restored big-block convertible that is ready for some boulevard cruising! The development of this V8 dates back to 1946, when engineers began considering new engine designs for postwar cars. 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. - P.B. Both of these engines were originally dealer-installed options, but since the NHRA moved to limit racing eligibility to factory-available options on cars available to the public, Pontiac made the SD 421 a factory option for 1962, and most of the approximately 164 SD 421 engines were installed in the Catalina, with another 16 being installed in . This S/D retains the original "Traction Master" traction bars and two-bar spinners on the original 8 . 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. With some WS6 "Trans Am Special Performance Package" bundles in 1978, the W72 engine was incorporated with the WS6 option group and not listed on the dealer order invoice. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Rated at 370 horsepower at 5,200 rpm and 460 pounds-feet of torque at 3,800 rpm, it has 10.75:1 compression, with induction through three Rochester two-barrel carbs, Pontiac's well-known "Tri-Power" setup. 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). A camshaft with 301/313 degrees of advertised duration, 0.407-inch (10.3mm) net valve lift, and 76 degrees of valve overlap was specified for actual production engines in lieu of the significantly more aggressive Ram Air IV-spec camshaft that had originally been planned for the engine (initially rated at 310hp (231kW) with that cam), but ultimately proved incapable of meeting the tightening emissions standards of the era with sufficient margin to satisfy Pontiac emission engineers given expected volume production variations. Piston pins: Icon, SAE 1016 to 1022 Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. The 428 was factory installed in large cars only. The consent submitted will only be used for data processing originating from this website. None of Pontiac's Ram Air engines actually enjoyed any true ram air effect. With A/C On, Engine Hot: 421: 1966: With Tri-Carb, With Air Injection reactor: 45S: 0.035: Super Duty 421s were back, tougher than ever. Low-performance and two-barrel applications, the standard engine in full-sized Pontiacs, got 1.96in (49.8mm) intake and 1.66in (42.2mm) exhaust valves and pressed in rocker arm studs. The 1972 455 HO was rated at 300hp (224kW) @ 4,000rpm and 415lbft (563Nm) @ 3,200rpm. Pontiac offered Tri-Power on select models and engines (347, 370, 389, and 421 CID) from 1957 through 1966, when it was finally . . 1967 was the last year for closed-chambered heads. The most valuable Pontiac GTO is the 1969 Judge convertible with the 370-hp Ram Air IV engine. While the 400 offered excellent power in the GTO (360 horses and 445 lb-ft of torque in 1968), Pontiac turned to what it called 'big journal' engines for the muscle machine's next upgrade. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. The air cleaners look like those used on the top dog 376 gross HP 421 CI engine but there was also a lesser 356 HP version available too. Specifications listing with the performance factory . 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. Jim Taylor, well-known Pontiac engine builder, had that question on his bucket list for years. 1. Rod/Stroke ratio: 1.65:1BOTTOM END Type Size Carb Horse Power Tourqe; Tri-Power: 389ci: 3x2bbl: 360 hp @ 5200 rpm: 424 lb-ft @ 3600 rpm: Base 8 . Engine Oil: 120 ft-lbs. Where else will the extra 100 horses come from? The Pontiac 2+2 featured a 6.9 L V8 engine, heavy-duty front springs, dual exhaust and distinctive exterior body design. The 4-barrel version was available from 1978 to 1981 and the Turbo version was limited to the 1980 and 1981 model year, however, it was originally intended to be available for the 3rd generation Firebird before its cancellation by GM. 1967 - 400 Ram Air or 428 Code 670. Exhaust: 180 cfm at 0.500-in The 421 was first availabe in a SD (Super Duty) model that was built for racing. The cylinder heads on the 400 CID version had an intake port volume of 290cc (17.70cuin), nearly twice the size of a typical standard D-port Pontiac head - and flowed in the area of 315cuft/min (8.9m3/min) @ 0.8in (20mm) valve lift; in the realm of the NASCAR-dominating Chrysler 426 Hemi. [22]. 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." Power output ranged from 135hp (101kW) to 170hp (127kW). On premium fuel, it was rated at 207 hp at 5200 rpm and . Block description: '64 421ci #157 Rocker arms: Crower roller, 1.6:1 In 1967, the cylinder head design was improved for the 400 4-barrel engine. Only one is known to survive today. 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. Pontiac planned to produce the 1953 models with the V8, but Buick and Oldsmobile appealed to GM management and earned a 2-year delay. Head mods: Port, cook, magnaflux, glass bead, convert to screw-in studs It could only be ordered with a TH200 automatic transmission and a 2bbl configuration. The engine was available in all full-size Pontiacs. All 1980 Trans Ams received this engine as standard with the option to delete this engine choice as a credit option for the standard L37 301. 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. High output Pontiac V8 Cylinder Heads. Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. That's the factory rating of the legendary 421 H.O. All 196869 #9792506 Ram Air 400 blocks have 4-bolt caps. It tips the scales at 3,950lbs. The Block Date Code represents the production date of the engine. With higher compression and dual exhaust it produced 280hp (209kW) for 19631964, and 285hp (213kW) for 1965 through 1967, its final year. 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. 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. engine for 1963 is reported to be putting out 500 ft-lbs torque at 4,200 rpm and . The 421.19cuin (6.9L) was introduced in 1961 as a dealer-installed Super Duty option. Standard only for the Pontiac Bonneville was Pontiac's first-ever fuel injection system. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. 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. . 301 Turbo (210hp, 157kW), (with the 5th VIN character being a "T". Engine displacement is a function of bore and stroke. [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. Standard in the Firebird Trans Am, it was still a rare engine. 1962 - 389 SD Code 544127. 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. He says the Tri-Power setup modified with the addition of the larger '66 center carb will flow 1,050 cfm. Engine Block Date Code. 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. All Pontiac V8s from 1955 to 1959 were reverse cooled, known as the "gusher" cooling system. Initially marketed as a 287cuin (4.7L), it went on to be manufactured in displacements between 265cuin (4.3L) and 455cuin (7.5L) in carburated, fuel injected, and turbocharged versions. [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. Carb: (3) Rochester two-barrels PMD Unusual for a major automaker, Pontiac did not have the customary "small-block" and "big-block" engine families common to other GM divisions, Ford, and Chrysler. Pushrods: LPC chrome moly The initial press cars that were given to the various enthusiast magazines (e.g. Pontiac continued to manufacture its own engines, distinct from Buick, Cadillac, Chevrolet, or Oldsmobile, until 1981. Maximum flow at 28 inches of water Deck Height: 10.215-in It featured the "744" 301/313 camshaft, which offered more duration and overlap than the "HO". SB International 00958 1963-1966 Pontiac 389 421 Engine 1.920" Intake Valves (Fits: 1966 Pontiac GTO) $7.98. Greater throughput mixed with the proper amount of fuel and ignited at the ideal time for the flame to expand against the piston will result in more power. - P.Top - Correct Exterior/Interior. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS ( SAE gross . While not related to the 400 W72, the concept was the same. Some 400s were dealer installed. All GTOs built from 1964-66 were powered by a 389-cubic-inch V-8 with 10.75:1 compression. V-8 (coded WG for stick or YH for auto) was the 2+2's base engine. HP = flow at 28 in/H2O x 0.257 x # of cylinders. 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]. 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. The engines feature a cast-iron block and head and two valves per cylinder. Pistons: Icon PN IC892 application 428 +0.030-in with 10cc dish Metallurgy of the critical parts is an area often overlooked, but not by Jim Taylor. 1966 Pontiac Catalina . 1969 - 400 Ram Air III Code 62. Preparation: Weigh, soap-and-water wash Beginning in 1967 casting numbers moved to the rear of the block just behind cylinder #8. Model Number: Body/Style Number: Body Type & Seating: Factory Price: . The 301 had a bore and stroke of 4in 3in (101.6mm 76.2mm). 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. The 1975 455 HO package received some negative press/reviews as some buyers expected to see a return of the 1971-1972 engine, and were disappointed when they received the lower output motor. Dry weight ranged from 590 to 650 pounds (270 to 290kg), depending on displacement and year. and so the 326 bore size was reduced to 3.72in (94.5mm), giving a true 326.06cuin (5.3L). 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. From a performance perspective, the 2+2 is pretty impressive. Brand: Crower PN 60311, solid This was underrated at 330hp (246kW). A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. Math, not gasoline, makes horsepower under the hood of a Pontiac. Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094 and a stroke of 4.00. This is it! However, the 1959 389 engines had the generator in front of the heads with reverse flow cooling still in use. Bore and stroke were 4.121in 2.84in (104.7mm 72.1mm) 303.63cuin (4,976cc). 1966 Pontiac Catalina Two tri-power 421s were optional, one with 356 bhp, the other with 376. Balancer: Original PMD rebuilt by Damper Doctor
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