Stating in 1962 the "421" and the "421 SD" engine became available as a factory option until 1966. 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An example of data being processed may be a unique identifier stored in a cookie. 287. In basic 2-barrel form it produced 290 horsepower and 428ft. pounds of torque in 1968. Tri-power engine rated at 376 hp. Splayed main caps, head bolts tie into main caps. Brand: Crower PN 60311, solid Jim Taylor knows this, so he took a mathematical engineering-style approach to finding 100 hp in a relatively optimized engine. The GTO's new hood scoop design, with the inlets centrally located and mounted above the carburetor, provided the opportunity for experimentation. Price $30000.00. For 1967, Pontiac retired the 389cuin (6.4L) and replaced it with the 400cuin (6,554cc), a 389 bored-out by +0.06in (1.5mm) to a bore and stroke of 4.12in 3+34in (104.6mm 95.3mm). 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. 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). Distributor: '61 Delco cast-iron with direct oiling The concept car Pontiac Strato-Streak was used to introduce the V8 and in later years the engine was installed in Pontiac products. Stock Pontiac Engine Specs. Simply put, what good is the power if the engine does not last? 1969 - 400 Ram Air III Code 62. 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. 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]. This 356hp monster is backed by a 4-speed manual transmission, while the Pontiac also features power steering and power brakes. Stock Pontiac Head Specs * During my searching for information, I found quite a few discrepancies in the sources I was viewing. This new material had stronger alloys in the iron. 1. 1969 - 400 Ram Air III or 350HO Code 48. Around January 1966 Pontiac took the next step and began offering as a factory option the XS-code engine. The 2-barrel version was last offered in 1979. Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. 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. The four-barrel version with 10.5:1 compression upped horsepower to a healthy 285. . Mechanical advance: 36-deg at 3,200 rpm 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). It featured 3+14in (82.6mm) main journals (which the legendary Smokey Yunick reputedly left Pontiac's engineering department over). All 428 cylinder heads received the 14 degree valve angle, closed chamber only in 67 and open chamber 68 and up. [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. Mods: Built to factory specifications/ adapt '64 choke to '66 center carburetor The 428 was factory installed in large cars only. 1967 - 400 Ram Air or 428 Code 670. When Robert Critchfield took over as general manager in 1952, he launched an ambitious plan to move Pontiac into the upscale, mid-range market occupied by Oldsmobile, and that demanded V8 power. All Pontiac Bonneville Convertible versions offered for the year 1966 with complete specs, performance and technical data in the catalogue of cars . Shipping to: 98837. Dual Carter Carburetor 500cuft/min (14m3/min) #3433S (front) and #3435S (rear) carburetors with manual chokes and mechanical linkage. Valve lift stayed at just over 0.400-inch with 1.5:1-ratio rocker arms. The very modest cam, combined with a low-compression ratio of 8.4 (advertised) and 7.9:1 actual resulted in 290hp (216kW) SAE NET. The engines feature a cast-iron block and head and two valves per cylinder. 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. The GTO came with a four-barrel 389 V8 with 335 horsepower. For 1967 only Pontiac called this engine the Quadra-Power 428. Rocker studs: ARP special 34-in bottom The 1970 '455 HO' was a conventional "D" port engine. Though airflow is paramount in making power, there are other aspects of the engine that are just as important. ENGINE TYPE Water-cooled V-8, cast iron block and head Displacement 428 in 3, 7015 cm 3 Power 390 hp @ 5200 rpm Not where most enthusiasts go first. Unlike previous enlargements of Pontiac V8s, it did not replace the 389. 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. The first of the "big journal" Pontiac V8s, it had a bore and stroke of 4+332in 4in (104.0mm 101.6mm) and came with dual four-barrel carburetors. of torque at 3,600 RPM in the Firebird, with only a small throttle restrictor tab on the Firebird being different. 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. #9770716 aka "716" heads featured a 170cc intake port volume, and were considered a milder "street" version of the vaunted SD421 Super Duty heads. 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. The engines feature a cast-iron block and head and two valves per cylinder. 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. The camshaft was also revised to have a slightly higher duration, the carburettor jets tuned and a dual exhaust was implemented allowing the power to increase to 220hp (223PS; 164kW) at 4000 rpm and 320lbft (434Nm) of torque at 2800 rpm. It was rated at 250hp (186kW) with 8.6:1 compression and 260hp (194kW) at 10.25:1 compression. . 5 January 2007. 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. The new-for-1965 "Venturi" body shape and curved side glass were carried over with updates front and rear. 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. Displacement (CID) Bore (Inches) Stroke (Inches) Mains (Inches) 1955. For the truly obsessed, 16 Grand Prixs were built with Pontiac's 421 Super Duty engines, rated at a staggering 370 bhp. 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. 1963 Pontiac V8 Engine Specs. [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). 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. Price $15500.00. All 196869 #9792506 Ram Air 400 blocks have 4-bolt caps. 1966 Pontiac Catalina technical specifications and data. 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. 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). When fitted with other high-airflow components, it produced a good balance of low-end torque and higher-RPM power. In 1968 the 326 was replaced by the similarly 389-derived 350, which used a 3+78in (98.4mm) bore and 3+34in (95.3mm) stroke for a total displacement of 353.8cuin (5,798cc). 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. Engine displacement is a function of bore and stroke. Beep, beep! 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. Vacuum advance: Not usedEXHAUST It produced 120hp (89kW) After 1981, the Pontiac V8 was replaced entirely by the GM "corporate" V8's from Chevrolet and Oldsmobile. Engine Oil: 95 ft-lbs. 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 SD-455 used round-port cylinder heads similar to those used on the 1971 and 1972 455 HO, with specific "LS-2" intake and cast-iron exhaust header manifolds. Sponsored Stories . Block casting # 9773157. In 1974 it was used in the GTO and was rated at 200hp (149kW) (net). 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. 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? 63 421 SD: 64: D-Port: 2.02/1.76: 77: 65 GTO, 65 421 HO: 65: D-Port: INTAKE MANIFOLD BOLT PATTERN IS THE SAME FOR ALL 65-79 HEADS. Again, its bore was expanded, this time 0.03in (0.76mm) to 4.1525in (105.47mm). This was based on results of over 1 million test miles, which was unheard of at the time. 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. NASCAR race cars embody the muscle car philosophy of power. superior_queens (3,035) 100%. 1968 - 400 Ram Air I and 428HO Code 37" Ram Air I and. 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. The 1963 Catalina two-door sports sedan pictured here showcases the 421 H.O. Along with being cheaper to build, this allowed more consistent valve action with less weight than a conventional shaft. 744) and a new valve spring package with dampers to positively control valve action. This simply meant that Pontiac installed both the SD-389 and SD-421 into vehicles on its assembly line. The 421 was first availabe in a SD (Super Duty) model that was built for racing. 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. Rings: LPC (Liberty Performance Components) premium moly, standard tension He thinks the stock exhaust flow of 180 cfm will suffice for this build. It would later become known colloquially as the "Ram Air III", though Pontiac never called it by that name. Even more powerful were the 421 Super Duty V8s that could produce up to 410 horsepower. Although it is much different from the original 1955-vintage Pontiac V-8 powerplant, the 301 has the distinction of being the last true Pontiac V-8 engine, as Pontiac ceased production of these engines effective April 1, 1981. 1966 Pontiac Ventura Specifications. 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. 1966 Pontiac Engine Data Location Of Engine Code: (Six-Cyl) - On cylinder head-to-block contact surface behind oil filter pipe. The results showed Pontiac that an L-head simply couldn't compete with an overhead valve engine. The engine build will be discussed in two parts. 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. Cougar pulled out of Mustang's shadow with the striped and spoilered 1969 Mercury Cougar Eliminator. Next time we will cover the induction system and the dyno testing to see if Jim meets his goal. HOT ROD and CAR AND DRIVER) were fitted with the Ram Air IV-spec camshaft and functional hood scoops - a fact that has been confirmed by several Pontiac sources. The Fresh Air package continued into the 1966 model year. Car and Driver magazine, which had showcased the infamous Pontiac GTO vs. Ferrari's GTO comparison in 1964, organized another bout between the . V-8 (coded WG for stick or YH for auto) was the 2+2's base engine. 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 beginnings of Pontiac's iconic Ram Air dynasty began during the 1965 model year. 1966 Pontiac Catalina 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. in., again available only in the GTO and Firebird. Other dimensional factors such as the wheel base, curb weight and length were largely unchanged. For the first time, Pontiac offered Tri-Power, three two-barrel carburetors with a sequential linkage (replacing the previous dual-quad set-up). 1968 - 400 Ram Air II Round Port Code 96. Setting initial timing at idle with the vacuum advance disconnected will usually fall around 12 to 16 degrees, but that's not really important. 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. Pontiac V8 Engine Codes and Specifications. [22]. 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. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. In 1968, there was also a 350 "HO" which had increased power with the addition of higher compression #18 heads (#17 and #46 were the most common 2-barrel heads), a four-barrel carburettor and matching intake that was also used on the 400 and 428 engines. The 1968 Ram Air II remained at 400 cu. As a result, peak horsepower dropped from 310 to 290, though torque increased from 390 to 395lb. These heads can be distinguished from 6x8 heads through a small stamped "4" on the top of the front boss. Plans were made to produce Firebirds and GTOs with advertised ratings of 355hp (265kW) and 375hp (280kW) respectively but concerns about emissions, the response of the automobile safety lobby, and the warranty implications of a high-revving street engine led to cancellation of the program.[why? 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. This included the ESC (Electronic Spark Control) distributor and controller borrowed from the 301 Turbo, which allowed for higher timing without the penalty of engine damaging pinging or preignition. Jim told HPP, "Since I was a young man in the '60s, I always thought how great it would be to find a true 100hp in a legendary 421 Tri-Power setup that retained its iron heads and intake. Primary tube length: approximately 31.00 inches Lobe separation angle: 112-deg Ever wonder what it would take to increase that number by 100? The rod weighs 751 grams versus the stock rod at 958 grams. Note the tri-color Pontiac Ventura upholstery. Power ratings increased accordingly: Several dealer-installed camshafts were optional to increase power further to 317hp (236kW). Engine Block Date Code. Over the years he has amassed a library of data from investing in metallurgical testing with a well-respected laboratory. 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. 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 1981 301 Turbo gained the electronic controls with an O2 sensor, feedback ECM and E4ME Quadrajet providing a slight reduction in output to 205hp (153kW) and 340lbft (461Nm).The 301 Turbo was limited to Trans Am and Formula Firebird production only. None of Pontiac's Ram Air engines actually enjoyed any true ram air effect. This engine was first offered in 1967 as the top engine option in full-size Pontiacs. Given that, it was no accident that the leader in intermediate muscle also put together the finest full-size performance machine -- the 1966 Pontiac 2+2. Windage tray: Original PMD '70 455, fabricate fit, no bosses at cap #2 The 389 V8 was first introduced by Pontiac in 1959. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. The 455 was fundamentally the same for the 1976 model year, albeit the shaker decal now just read "455". Price $14000.00. The engine compartment of this concours Catalina is beautifully finished. This was underrated at 330hp (246kW). 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. Bearings: Sealed-Power mains and rods, cam Dura-Bond One of the key modifications over the standard 301 4-barrel was the 301 Turbo block. 544127 with larger 2.02/1.76-inch (51/45mm) valves entered production. Furthermore, this car had an automatic, air conditioning, a 3.08 axle and weighed 4,010 pounds (1,819kg). or Best Offer. 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. Despite their work, the division's conservative management saw no immediate need to replace the Pontiac Straight-8 until later in the 1950s. These guys lived by mathematics since every function of an engine that converts chemical to mechanical energy can be assigned a number. Engine options for the 1966 Pontiac Ventura were a 389 and 421 cubic inch V-8. 1962 421 super duty motor Price $30000.00. Oil pump: . There were 11 different Pontiac V8 engine options for 1966, starting with the 326-cid 250-hp Tempest base V8. 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. All Pontiac V8s from 1955 to 1959 were reverse cooled, known as the "gusher" cooling system. 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. Paul Stenquist. In 1967, the cylinder head design was improved for the 400 4-barrel engine. Pontiac . Wearing a revised GM B-body semi-fastback shape, the 2+2 option delivered a 421-cu.in. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Styling for Status. Bore/Stroke ratio: 1.04:1 Are you thinking of buying a 2007 muscle car, or any other car? In 1969, Pontiac also used a revised crankshaft out of a Pearlitic malleable-iron, although it still used the "N" casting letter. 1966: 421: 9782611 (late) 1967-1969. Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. The Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. The overhead-cam six-cylinder engine was new for 1966 and the standard engine in the Tempest and Tempest Custom. Method used to retain pins in pistons: . Fuel line size: 38-inch, 516-inch to carburetor Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. [4] It was replaced by the 455 for the 1970 model year. The 2+2 option package arrived for 1965, giving the Catalina a performance persona and credentials to match. The initial press cars that were given to the various enthusiast magazines (e.g. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS . 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. What is important is the total timing, the . Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. Pontiac did not release official power ratings for this engine, saying only that it had more than 300hp (224kW). Boost was wastegate limited to 91psi (0.6210.069bar). This money bought a potent 389 V-8 with 267-283 bhp . 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. 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 1972 455 HO was available in the Firebird (optional in Formula; standard in Trans Am) and 2-door LeMans (including those with the GTO option) and LeMans Sport convertible. Special Offer on Antivirus Software From HowStuffWorks and TotalAV Security. . Dry weight ranged from 590 to 650 pounds (270 to 290kg), depending on displacement and year. Here is another number to ponder: 370 hp. Melling PN M54D with 60 psi spring, made 70 psi at 6,000 rpm with 30W oil By 1979, Pontiac was no longer allowed to produce the 400 engine as emissions further tightened. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS ( SAE gross . Preparation: Cook, bead blast, magnaflux, bore, true decks, align bore Lifters: Crower solid with EDM oil hole (0.024 inch) In 1967, the Pontiac 2+2 became an option on the . 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. In 1970 the casting number #9799914 Ram Air 400 4-bolt main block also used the 4-bolt main caps on Ram Air applications. Located at the back of the engine near the Distributor. This chart covers Pontiac V8 Engines; 265, 301, 326, 350, 389, 400, 421 . 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. Pontiac engines were used in its U.S.-market cars; Canadian-built Pontiac automobiles generally used Chevrolet engines. 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. In 1961 Pontiac continued to push the horsepower upwards with the release of the 421 engine. 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. Prices ranged from $2,760 to $3,220 . 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.
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