Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke The short deck engine weighed about 40lb (18kg) less than the other variants and had an 8000 rpm redline. Along with being cheaper to build, this allowed more consistent valve action with less weight than a conventional shaft. . It was offered in the following forms: For 1957 the V8's stroke was increased to 3.5625in (90.49mm), for a displacement of 347cuin (5.7L). The Pontiac 2+2 was promoted as the "big brother" to the iconic Pontiac GTO. 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. The 2+2 option package arrived for 1965, giving the Catalina a performance persona and credentials to match. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. Free-flowing exhaust manifolds from the 400 Ram Air were used late in the model year. Cam choice is always extremely important, and Jim decided to go with an aggressive Crower mechanical flat-tappet stick with 247/252-degrees duration at 0.050 and 0.515/0.525 lift (0.495/0.505 with 0.020 lash) with 1.6:1 rockers. Bore/Stroke: 4.150/4.00-in or choose Generic to see kits that might fit a . 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 Ram Air IV used the Ram Air II's camshaft but lift in the Ram Air IV was increased to 0.52in (13mm) thanks to the use of 1.65 ratio rocker arms (vs 1.50). 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. The 455 was fundamentally the same for the 1976 model year, albeit the shaker decal now just read "455". The next 1 or 2 numbers represent the date, and the last number is the year. The results showed Pontiac that an L-head simply couldn't compete with an overhead valve engine. Year: CU IN: Casting # 1967: 326. Crank: Original '64 421 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. 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 1972 455 HO was rated at 300hp (224kW) @ 4,000rpm and 415lbft (563Nm) @ 3,200rpm. Flamboyantly styled and expansively proportioned, the 2+2 was unbeatable for sheer presence. The other major difference between the "typical" Pontiac engine of the time was that this one used the large . 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. The SD-389 was limited to a single 4-barrel while the SD-421 used dual 4-barrels. Final torque ratings may vary and need to be determined based on application and parts used. Optional engines included the 356hp Tri-Power as seen on our feature car (code WH manual or YJ auto), or the 421HO, rated at 376hp . Vacuum advance: Not usedEXHAUST The 428 was factory installed in large cars only. 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. 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. Pontiac continued to manufacture its own engines, distinct from Buick, Cadillac, Chevrolet, or Oldsmobile, until 1981. for 1980, and the 8th being a "T" for 1981). Compression jumped from 11.0:1 to 12.0:1, while other tweaks increased maximum shift points by 500 rpm, to a screaming 6400 rpm. Preparation: File-fit for end gap if needed, wash Fuel pump: Will use 110-gph Carter Pistons: Icon PN IC892 application 428 +0.030-in with 10cc dish Preparation: Cook, bead blast, magnaflux, bore, true decks, align bore The 421 also marked the end of the option for a forged-steel crankshaft. [19], Parts for Ram Air V engines are not readily available. 1962 421 super duty motor Price $30000.00. Turn adjusting screw in Clockwise until engine misfires, then turn screw out 1/2 turn . Nevertheless, there appears in the October 72 issue of MOTOR TREND, a road test of a 1973 SD-455 Grand Am. 1966 Pontiac Catalina technical specifications and data. It tips the scales at 3,950lbs. superior_queens (3,035) 100%. (imp.) Maximum flow at 28 inches of water - P.Top - Correct Exterior/Interior. Engine options for the 1966 Pontiac Ventura were a 389 and 421 cubic inch V-8. 1965 Pontiac LeMans GTO Mecum. 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). [citation needed]. Royal Pontiac's engine swap wasn't a new trick for Pontiac. Pontiac went to open-chambered heads in some 1967 models and all 68 and up to improve power, engine breathing and reduce emissions. 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. Rocker arms: Crower roller, 1.6:1 Located at the back of the engine near the Distributor. Only 630 Bonnevilles were produced for 1957, all of them fuel-injected. A mere five were built, all with a four-speed transmission. 068) to 301/313 (No. Distributor: '61 Delco cast-iron with direct oiling Diameter: 516-in Price $30000.00. 5 January 2007. Pontiac listed the 290hp (216kW) rating at 4000 rpm for a motor that had a 5700rpm redline on the factory tachometer. It was the same engine as the '67-'68 400 HO[18] but for 1969 and 1970 it included a driver-selectable outside air induction system on the GTO(it was a separate option on Firebird), with the hood vents opened and closed using a knob located under the dash, below and to the right of the steering wheel, its bracket labeled "RAM AIR". 544127 with larger 2.02/1.76-inch (51/45mm) valves entered production. 1962 - 389 SD Code 544127. A concave rear window, fender skirts, and ribbed die-cast lower body trim, augmented the Grand Prix's upscale appearance. "Armasteel" was a trademark of pearlitic malleable iron developed by GM's Saginaw Metal Casting Operations around 1936, which was referred to as "locking ball" cast-iron, as opposed to the "flaking" type found in other engines. 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. For 1974 another 1,001 (943 Trans Am, 58 Formula) were built, after which the SD-455 was discontinued. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Muscle cars wouldn't have much muscle without horsepower -- but what exactly is horsepower? 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. The goal of making a Pontiac Hemi succeeded but the engine was never produced. 1966: 421: 9782611 (late) 1967-1969. Well, gaze upon these numbersa 421ci Pontiac with Tri-Power carburetion. Along with the HO it also had Pontiac's famous cast-iron "headers", which were much better at reducing backpressure than the regular manifolds. Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. These heads can be distinguished from 6x8 heads through a small stamped "4" on the top of the front boss. The overhead-cam six-cylinder engine was new for 1966 and the standard engine in the Tempest and Tempest Custom. Next time we will cover the induction system and the dyno testing to see if Jim meets his goal. Windage tray: Original PMD '70 455, fabricate fit, no bosses at cap #2 1967 - 400 Ram Air Code 97. Piston pins: Icon, SAE 1016 to 1022 Kits for Pontiac applications. Late in the model year the Ram Air 455 HO was made an available option for those GTOs with the optional "The Judge" package. 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. The Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. - P.B. Factory heavy-duty high-pressure oil pump and eight-quart sump, four-bolt main bearing caps with Moraine aluminum bearings, and #1110976 dual-point distributor without vacuum advance. 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. Also added was the #48 casting number heads with a 68cc (4.15cuin) chamber for higher compression, along with larger 2.11 and 1.77in (54 and 45mm) valves. Stock Pontiac Engine Specs. This chart covers Pontiac V8 Engines; 265, 301, 326, 350, 389, 400, 421 . It produced 120hp (89kW) After 1981, the Pontiac V8 was replaced entirely by the GM "corporate" V8's from Chevrolet and Oldsmobile. 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). The Ram Air II also incorporated the first computer-designed camshaft. Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. Seat pressure: 110 pounds at 1.600-in Year. This 1966 Pontiac 2+2 Convertible is a beautifully restored big-block convertible that is ready for some boulevard cruising! like the earlier 1971-1972 motor, but it was not the same motor, and featured standard d-port heads with a very conservative camshaft. 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. 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. Free local pickup. Learn how Classified Ads works . 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. Jets, Primary: Center #64 adjust power valvespring for 12 Hg at 1,000 rpm 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. Special Offer on Antivirus Software From HowStuffWorks and TotalAV Security. For 1958 the V8's bore was increased again to 4+116in (103.2mm), increasing displacement to 369.4cuin (6.1L). By comparison, the factory 421 H.O. For the 1969 and 1970 model years it was the standard engine in both the Firebird Trans Am and the GTO Judge. Beginning in 1961 the Pontiac V-8 (389 and 421) was dubbed the Trophy V-8, due to its many victories in racing. Also, a rumored 75 cars were built with non-Super Duty 421 engines rated at 320 bhp. 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. See Consumer Guide Automotive's New-Car Reviews, Prices, and Information. 1968 Pontiac GTO 428 / Royal Bobcat. We and our partners use cookies to Store and/or access information on a device. 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. Tri-Power equipped Pontiac hot roda stout piece by anyone's standards. Crower identifies this cam as a Level 4, which means it provides strong midrange and top-end power for heavily modified engines. Both Chevy and Ford had 427 cu in performance engines, so Pontiac simply referred to its 427 as a 428 to one-up them. The 301T block was significantly more durable than the standard 301 block and received a thicker bottom end. There was also the addition of dual exhaust, and for vehicles equipped with a manual transmission, a slightly more aggressive camshaft. The engine compartment of this concours Catalina is beautifully finished. The Pontiac 421 HO was the king of the streets in 1963, producing 353 and 370 horsepower depending on carburetor configuration. Deck Height: 10.215-in Head ID Location While all this sounds great, remember the engine will have to retain the small 1.92-inch intake valve because chamber space is too tight for larger ones. 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. It was the top-of-the-line engine unless one opted for the "Ram Air" V-8 derived from it. Like the 326, it was offered in both 2-barrel and 4-barrel versions. Secondary: Front and rear #70 The Ram Air IV replaced the Ram Air II in 1969. The 389 was the standard engine on the GTO up to 1966. The W72 also featured a camshaft with a higher duration, finer tuned 800cfm Rochester Quadrajet, insulated fuel line, larger 60PSI oil pump, chrome valve covers, a larger harmonic balancer, and the "T/A 6.6" Shaker decal. said the "Pontiac 421 cu. Engine, horsepower, torque, dimensions and mechanical details for the 1966 Pontiac Catalina. . Rocker studs: ARP special 34-in bottom 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. 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. It could only be ordered with a TH200 automatic transmission and a 2bbl configuration. Boost was wastegate limited to 91psi (0.6210.069bar). 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. Neither casting was equipped with an exhaust crossover. The 1979 W72/WS6 equipped Trans Am was considered to be one of the overall best performing cars of the decade due to having a powerplant that produced more power than any other competitor on the market at the time with handling equipment to supplement the performance.[12]. This S/D retains the original "Traction Master" traction bars and two-bar spinners on the original 8 . Most Pontiac engines were painted light blue. 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. The last was the 421 HO and included a high-output camshaft and valve train. Around January 1966 Pontiac took the next step and began offering as a factory option the XS-code engine. To learn everything you need to know about car engines, see. Piston-to-deck height: 0.009-in . [5] It was rated at 360hp (268kW), but the Grand Prix with the same specifications was rated at 370hp (276kW).[6]. Made with a provision for dry sump oiling, it truly was a racing engine, detuned for use in passenger cars. [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. Here is another number to ponder: 370 hp. Standard in the Firebird Trans Am, it was still a rare engine. 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. 1966 Pontiac Ventura Specifications. Only about 400 were produced before the fuel injection system was quietly dropped. The most valuable Pontiac GTO is the 1969 Judge convertible with the 370-hp Ram Air IV engine. The concept car Pontiac Strato-Streak was used to introduce the V8 and in later years the engine was installed in Pontiac products. Headers: Hooker Super Comp (for dyno test) The engine was dubbed the TEMPEST V-8, a nickname it retained until the end of 1960. By early 1979, orders for the W72 package were being rejected by dealers as they supply had run dry. And it cruised silently and rode with less harshness than muscle intermediates. It was rated at 360hp @4300 RPM in the GTO and 370 @ 4600 RPM in the Grand Prix and other full-size Pontiacs. Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094 and a stroke of 4.00. For 1956 the V8 was bored out to 3.9375in (100.01mm), increasing displacement to 316.6cuin (5.2L). A three-speed stick was standard; a four-speed and automatic cost extra. Now select an engine model (if applicable) -- Pontiac Engine Models -- All Pontiac Kits 151 301 326 350 3800 389 4-cylinder 400 421 428 455 Brodix Heads Edelbrock Heads Iron Duke L67 Pro Stock Dart Heads Pro Stock Heads Ram Air Runner Heads Super Duty Generic V8. 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. The external dimensions of all their V8s, from 326455cuin (5.37.5L) were the same. These motors were built mainly for NASCAR or other racing purposes and were equipped with all the extra racing goodies that people were looking for. Free shipping on many items | Browse your favorite brands | affordable prices. With A/C On, Engine Hot: 421: 1966: With Tri-Carb, With Air Injection reactor: 45S: 0.035: A limited-slip differential and gearing up to 4:11.1 were optional. [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). They acquired the featured Montero Red 1966 Pontiac Catalina post car, which was equipped from the factory with the 421 H.O. It is a known fact that a person's pupils dilate slightly when viewing something pleasant to the eyes. More 400cuin (6.6L) engines were produced by Pontiac than the other versions - estimates range from 80 to 200 units. Simply put, what good is the power if the engine does not last? SB International 00958 1963-1966 Pontiac 389 421 Engine 1.920" Intake Valves (Fits: 1966 Pontiac GTO) $7.98. 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. . Optional was the obligatory four-speed manual or new-for-1965 Turbo-Hyramatic three-speed automatic. 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 1971 455 HO was available in the Firebird (optional in Formula; standard in Trans Am), the GTO (standard with "The Judge" package), and the 2-door LeMans, LeMans T-37 (including GT-37), and LeMans Sport. The four-barrel 400 was a popular performance option for many of Pontiac's cars. Various Pontiac sources have emphatically stated that NO 310hp (231kW) versions of the SD-455 were installed in regular production cars. 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." The 1971 Pontiac 455 HO was Pontiac's first engine to receive a special 800cuft/min (23m3/min) Rochester Quadra-jet carburetor with specific jetting. [11] By mid-1978, the W72 could no longer be ordered in conjunction with the MX1 3-speed Turbo-Hydramatic 350 automatic transmission, and could only be ordered with the 4-speed manual transmission. Here are features on more than 100, Muscle cars created their own culture. 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. 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. The Fresh Air package continued into the 1966 model year. 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. 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). Along with proper parts selection, accurate machining and assembly are also important. 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. Unfortunately, that's what happened with the 1963 Pontiac Super Duty 421. This camshaft sported a 308-/320-degree duration with 0.47-inch (12mm) lift. Read. 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. NASCAR race cars embody the muscle car philosophy of power. The 1958 370" engine and the 195960 389 version was named the "Tempest" V-8 and changed in 61 to the "Trophy" V8. Valve guides: K-Line, liners 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. 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? To learn about it, read. 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). . Unique exterior features included "2+2" badges, twin lens taillamps, and chrome bodyside gills; Pontiac's famous eight-lug aluminum wheels were the ultimate optional touch. Method used to retain pins in pistons: . Pontiac first offered three two-barrel carburetors in 1957 and the Tri-power set up was an option on the GTO from 1964-66. With a view to the latter, what we find lurking under the hood is the 421ci Tri-Power V8. . 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. engine for 1963 is reported to be putting out 500 ft-lbs torque at 4,200 rpm and .
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