The 287 was an "oversquare" engine with a bore and stroke of 3+34in 3+14in (95.3mm 82.6mm), for a total displacement of 287.2cuin (4.7L). Detroit, however, was reluctant to relinquish its time-tested biggest-car/best-engine formula. Some 400s were dealer installed. Seat pressure: 110 pounds at 1.600-in The last "true" Pontiac V8s, a 265 and 301cuin (4.3 and 4.9L), ended production in early 1981. . The 301.6cuin (4.9L) 301 was offered from 1977 to 1981 and also installed in other GM cars during those years. That's the factory rating of the legendary 421 H.O. Bore/Stroke: 4.150/4.00-in Valves: Competition Products stainless steel, 1.92 /1.66-in Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. Block description: '64 421ci #157 Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094 and a stroke of 4.00. The stroke increased to 4.21-inch (106.9mm). Secondary: Front and rear #70 Note the tri-color Pontiac Ventura upholstery. The earlier 1975-78 blocks had metal shaved from the journals and bottom end as well as a decrease in the nickel content of the block in an attempt to decrease the overall weight of the vehicle to help alleviate emissions and cost. For the first time, Pontiac offered Tri-Power, three two-barrel carburetors with a sequential linkage (replacing the previous dual-quad set-up). 068) to 301/313 (No. . Paul Stenquist. Pontiac ignited the classic muscle car era with a stroke of marketing genius. Pontiac successfully competed against more-expensive inline four-cylinder models with their inline flathead six-cylinder engines. Duration at .050: 247/252-deg 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). [20] Pontiac asked Mopar (Chrysler, Dodge, Plymouth) for help in designing it and making it work. Cam was a #541596 McKellar No. Crank: Original '64 421 In 1970 the casting number #9799914 Ram Air 400 4-bolt main block also used the 4-bolt main caps on Ram Air applications. #9770716 aka "716" heads featured a 170cc intake port volume, and were considered a milder "street" version of the vaunted SD421 Super Duty heads. The engines feature a cast-iron block and head and two valves per cylinder. For 1958 the V8's bore was increased again to 4+116in (103.2mm), increasing displacement to 369.4cuin (6.1L). [19], Parts for Ram Air V engines are not readily available. ENGINE. Vacuum advance: Not usedEXHAUST Contemporary road tests suggest that it was actually somewhat inferior to the Tri-Power engines, although it did have better fuel economy. In 1967, the Pontiac 2+2 became an option on the . 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. 1968 - 400 Ram Air I and 428HO Code 37" Ram Air I and. The valve angle was reduced from 17 degrees to 14 degrees for better breathing. 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. Pontiac planned to produce the 1953 models with the V8, but Buick and Oldsmobile appealed to GM management and earned a 2-year delay. 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. 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? For 1974 another 1,001 (943 Trans Am, 58 Formula) were built, after which the SD-455 was discontinued. For the 1978 model year, Pontiac re-incorporated the earlier thicker cast cast engine block denoted by the cast number 418988 and a "XX" cast into the side of the block. The Catalina was the base intermediate-sized Pontiac resting on a 121-inch wheelbase that it shared with the Safari and the Grand Prix. Preparation: Magnaflux, check for equal stroke and index, grind, polish 0.010-in It was rated at 360hp @4300 RPM in the GTO and 370 @ 4600 RPM in the Grand Prix and other full-size Pontiacs. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. Ram Air induction was optionally available with the 455 HO in the Firebird Formula (standard on Trans Am), and the 2-door LeMans (including GTO). 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. For the 1967 GTO the engine was rated at 360bhp (268kW; 365PS) and had the cast-iron headers. street engine. 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. This camshaft sported a 308-/320-degree duration with 0.47-inch (12mm) lift. The basic package included the heavy-duty suspension, with even stiffer springs and shocks available. On premium fuel, it was rated at 207 hp at 5200 rpm and . Most Pontiac engines were painted light blue. . Method used to retain pins in pistons: . 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. moniker from the shaker due to the disappointing public approval as the motor was not deemed to be "High Output". Lobe separation angle: 112-deg The engine compartment of this concours Catalina is beautifully finished. 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. Both used a single two-barrel carburetor. This simply meant that Pontiac installed both the SD-389 and SD-421 into vehicles on its assembly line. Most Pontiac engines like total timing (rev engine past 3000 or so until the mechanical advance stops moving/advancing, vacuum advance disconnected to check total timing) somewhere between 32 and 36 degrees. This new material had stronger alloys in the iron. 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. Lift: 0.515/0.525 with 1.6:1 rockers The W72 was only available for a very short time, with the majority of 1979 model year W72 Firebirds ordered in late 1978. For 1969-1970 GTO the 400 HO included driver operable Ram Air induction and was renamed "400 Ram Air" for 1969 and just "Ram Air" for 1970. Transistorized ignition was available. In 1974 it was used in the GTO and was rated at 200hp (149kW) (net). Collector size: 3.00-inGASKETS The short-deck block and different intake ports also required the design of a new intake manifold. Head mods: Port, cook, magnaflux, glass bead, convert to screw-in studs 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. In 1964 when the new "A" body intermediates came out there was a new corporate (GM) engine size limitation to anything less than 330cuin (5.4L). 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. In 1969, Pontiac unveiled its Trans Am model Firebird, and since racing rules required engines of less than 5L (305.1cuin), Pontiac unveiled the 303 for racing models only, never available to the public. Like the 326, it was offered in both 2-barrel and 4-barrel versions. Oil pan: 8-quart with extended pick-up, fabricated retention clamp 1963 Pontiac V8 Engine Specs. Here are features on more than 100, Muscle cars created their own culture. engine for 1963 is reported to be putting out 500 ft-lbs torque at 4,200 rpm and . Rocker arms: Crower roller, 1.6:1 Deck Height: 10.215-in This was based on results of over 1 million test miles, which was unheard of at the time. Email Email. The new-for-1965 "Venturi" body shape and curved side glass were carried over with updates front and rear. A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. 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. Price $15500.00. Pontiac's SCCA Trans-Am program was promising, with race-ready engines producing 475hp (354kW) to 525hp (391kW), however the series General Competition Rules required the manufacturer to produce no less than 250 vehicles with the 303. Are you thinking of buying a 2007 muscle car, or any other car? In the 1960s the popular 389cuin (6.4L) version, which had helped establish the Pontiac GTO as a premier muscle car, was cut in half to produce an unusual, high-torque inline four economy engine, the Trophy 4. 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. These guys lived by mathematics since every function of an engine that converts chemical to mechanical energy can be assigned a number. These heads can be distinguished from 6x8 heads through a small stamped "4" on the top of the front boss. It is a known fact that a person's pupils dilate slightly when viewing something pleasant to the eyes. 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. However, compression ratios were cut dramatically, marking the beginning of the end of the muscle car era. Open pressure: 282 pounds at 1.100-in In 1967 the 421 was enlarged to 426.61cuin (7.0L) by increasing its bore to 4.12in (104.6mm). The GTO came with a four-barrel 389 V8 with 335 horsepower. The camshaft was the HO cam with 288/301 duration. Shipping to: 98837. More 400cuin (6.6L) engines were produced by Pontiac than the other versions - estimates range from 80 to 200 units. 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. 1968 Pontiac GTO 428 / Royal Bobcat. Coil: GM Piston pins: Icon, SAE 1016 to 1022 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]. Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke In 1961 and 1962 they were available with either one 4 barrel carburetor or a dual 4 barrel carburetor setup depending on whether the buyer wanted to head to the racetrack or drag strip. Well, gaze upon these numbersa 421ci Pontiac with Tri-Power carburetion. Even more powerful were the 421 Super Duty V8s that could produce up to 410 horsepower. There were a few 1962 Grand Prix models that came with a 421 SD from the factory so if someone is lucky enough to have one today then they have a car that is probably worth some decent money simply because of the rarity of these models.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[580,400],'enginefacts_com-medrectangle-3','ezslot_2',115,'0','0'])};__ez_fad_position('div-gpt-ad-enginefacts_com-medrectangle-3-0'); Engine Facts 2023. The head design was incorporated from the earlier 1970's 350 Pontiac heads, and could satisfy emissions in all states except for high-altitude emissions states and California. All GTOs built from 1964-66 were powered by a 389-cubic-inch V-8 with 10.75:1 compression. Made with a provision for dry sump oiling, it truly was a racing engine, detuned for use in passenger cars. The 2-barrel version was last offered in 1979. / 8.3 mpg (U.S.) / 3.6 km/l, more data: 1966 Pontiac Catalina 2 . This S/D retains the original "Traction Master" traction bars and two-bar spinners on the original 8 . Pontiac V8 Engine Tune Up Specifications. Save pontiac 421 complete engine to get e-mail alerts and updates on your eBay Feed. 1966 Pontiac Complete 389 Engine YC code 290 HP Block Catalina . By comparison, the factory 421 H.O. Here is another number to ponder: 370 hp. said the "Pontiac 421 cu. Super Duty 421s were back, tougher than ever. Effectively, Pontiac's V8s were all small blocks, sharing the same connecting rod length 6.625 in (168.3mm) (except for the later short deck 301 and 265 produced in the late 1970s and early 1980s before Pontiac adopted universal GM engines). 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. In 1967, the cylinder head design was improved for the 400 4-barrel engine. 1969 - 400 Ram Air III or 350HO Code 48. This engine was first offered in 1967 as the top engine option in full-size Pontiacs. By early 1979, orders for the W72 package were being rejected by dealers as they supply had run dry. It was implemented as further development of a cost-effective, more fuel efficient V8 derivative of the 301 V8 for the CAFE requirements. 1966: 421: 9782611 (late) 1967-1969. Preparation: Cook, bead blast, magnaflux, bore, true decks, align bore 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. It also sports the four-speed manual, limited . This 1966 Pontiac 2+2 Convertible is a beautifully restored big-block convertible that is ready for some boulevard cruising! High output Pontiac V8 Cylinder Heads. 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). Installed position: 110-deg Fuel line size: 38-inch, 516-inch to carburetor Reductions in reciprocating weight free up horsepower. The 428 was factory installed in large cars only. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. 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. Ultimately Pontiac produced only 295 1973 SD-455 Firebirds (252 Trans Am, 43 Formula). Exhaust: 180 cfm at 0.500-in He says the Tri-Power setup modified with the addition of the larger '66 center carb will flow 1,050 cfm. Rear Main Cap. 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. ft. After the SD-455 was certified with the new cam, it was production-ready but was then further delayed by the EPA mandating Pontiac recertify all of its engines when the EPA discovered that part-throttle emissions exceeded the limits. - P.B. Since the story of this 421 is better told in pictures, follow along as we take you on this exciting journey! As a result, peak horsepower dropped from 310 to 290, though torque increased from 390 to 395lb. The Armasteel cast crankshaft was the standard hardened cast-iron crankshaft used throughout the entire Pontiac V-8 line until 1967. Using an equation the author has provided in HPP many timesmost recently with The Mule engine seriesit was revealed that around 228.6-cfm flow though the intake port of the cylinder head is required to produce the desired 470 hp. 18 watchers 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." A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability.

What Is My Locality In Address, Hollister Size For 15 Year Old, Roswell Daily Record Shooting, Articles OTHER