of torque at 3,800 RPM in the GTO, and 340 HORSEPOWER at 5,300 RPM and 430-lb.ft. To determine horsepower from airflow, invert the equation: Standard in the Firebird Trans Am, it was still a rare engine. High output Pontiac V8 Cylinder Heads. 1966 Engine Codes ; Code: Application: Displacement: Compression: Horsepower: Transmission: Heads: Camshaft: Carb: WA : 389: 8.6:1: 256: Manual: 91: 254: 2 bbl: WB . It produced 120hp (89kW) After 1981, the Pontiac V8 was replaced entirely by the GM "corporate" V8's from Chevrolet and Oldsmobile. Jim Taylor knows this, so he took a mathematical engineering-style approach to finding 100 hp in a relatively optimized engine. The 2+2 package was first offered as a $291 option on Catalina hardtops and convertibles in 1964. By comparison, the factory 421 H.O. "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. 1967 - 400 Ram Air Code 97. Save pontiac 421 complete engine to get e-mail alerts and updates on your eBay Feed. . It was renamed 428 HO for 1968. After the 1974 SD455 was dropped the 1975 Firebird's top performance engine was an 'L78' Pontiac 400cuin (6.6L). 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. 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. 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. Not long before the model year introduction, Pontiac management decided that the entire line would be V8-powered. On the invoicing for the 1979 model year Firebirds, they had the option listed as L78, however, every 1979 400 equipped car received a W72 engine. It tips the scales at 3,950lbs. At the request of Ed Cole, general manager of Chevrolet, the layout was also used by the Chevrolet V8 released in 1955, an exception to the customary GM policy of allowing a division one year of exclusive use of an internally developed advance. 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. 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 single four barrel was rated at 333 bhp while the Tri-Power version carried a 348 bhp rating. The Catalina was the base intermediate-sized Pontiac resting on a 121-inch wheelbase that it shared with the Safari and the Grand Prix. With an identical bore and stroke of 4+116in (103.2mm) and 3+34in (95.3mm) it was precisely half the displacement of the 389 and shared numerous parts with the V8,[1] yet weighed considerably more than half as the engine lower half and block casting were not simply divided down the middle. 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. Flamboyantly styled and expansively proportioned, the 2+2 was unbeatable for sheer presence. Again, its bore was expanded, this time 0.03in (0.76mm) to 4.1525in (105.47mm). 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). This chart covers Pontiac V8 Engines; 265, 301, 326, 350, 389, 400, 421 . One version of the engine featured camshafts driven off the front of the engine, another design had the cams driven by gears off the back of the engine. Rear Main Cap. 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. [citation needed]. 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]. Casting number: 97770716, '64 date Both engines received the McKellar number-10 camshaft, which was much like a solid-lifter version of the hydraulic number-041 of later years. 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. This was a completely stock car on loan from a private owner for the test. The 421 used the same 4.120-inch bore but used the 4.0-inch crank from the 421 it replaced. Crank: Original '64 421 It's well documented that an internal combustion engine is nothing more than an air pump. The 421 badging was standard on the 2+2, the 421 H.O. Retainers: Crower steel The valve angle was reduced from 17 degrees to 14 degrees for better breathing. They acquired the featured Montero Red 1966 Pontiac Catalina post car, which was equipped from the factory with the 421 H.O. Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke The 400 remained in production through the 1978 model year, with 1979 cars receiving engines produced the previous year. Specifications listing with the performance factory . Piston pins: Icon, SAE 1016 to 1022 Since the story of this 421 is better told in pictures, follow along as we take you on this exciting journey! Engine options for the 1966 Pontiac Ventura were a 389 and 421 cubic inch V-8. Exhaust: 180 cfm at 0.500-in 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). 1966 Pontiac Catalina Specifications and Production. A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability. Transistorized ignition was available. The Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. In 1970 the casting number #9799914 Ram Air 400 4-bolt main block also used the 4-bolt main caps on Ram Air applications. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. From a performance perspective, the 2+2 is pretty impressive. The 389 was the standard engine for the Pontiac Grand Prix and Pontiac Bonneville and installed in the Pontiac GTO through 1966. By 1965 and 1966 the same combinations would be rated at 338hp (252kW) for the 4bbl and the two Tri-Power versions would be rated at 356hp (265kW) and the H-O version at 376hp (280kW). To learn everything you need to know about car engines, see. Manage Settings However, the 1959 389 engines had the generator in front of the heads with reverse flow cooling still in use. 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. Along with proper parts selection, accurate machining and assembly are also important. This was a project started with the end goal of building a 427 Hemi. The GTO's new hood scoop design, with the inlets centrally located and mounted above the carburetor, provided the opportunity for experimentation. ENGINE TYPE Water-cooled V-8, cast iron block and head Displacement 428 in 3, 7015 cm 3 Power 390 hp @ 5200 rpm Pontiac engines were used in its U.S.-market cars; Canadian-built Pontiac automobiles generally used Chevrolet engines. Are you thinking of buying a 2007 muscle car, or any other car? Every torque specification should be in this table, however if there is one missing, please Contact Me and I will get you the spec and add it to the table. 1966 Pontiac Ventura Specifications. Engine Displacement: 432 ci (V8) - Stamped on right front side of block or beneath production . It included a new camshaft with duration increased from 288/302 (No. 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. A higher-output version was offered, called the 326 HO (High Output). A mere five were built, all with a four-speed transmission. 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. A big chunk of the appeal of the 1965 and '66 2+2 was the fact that you got a standard 421 under the hood: The 338hp, four-barrel 421-cu.in. A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. In 1969 the 350 HO was upgraded again with the addition of the 400 HO cam, commonly referred to by enthusiasts as the 068 cam. 1966 Pontiac Catalina . 3.75. Super Duty 421s were back, tougher than ever. Cougar pulled out of Mustang's shadow with the striped and spoilered 1969 Mercury Cougar Eliminator. Also bowing in 1967 was the new Firebird, which had the . 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. Year: CU IN: Casting # 1967: 326. SELLER Glendale, Arizona 85305. Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094 and a stroke of 4.00. Stating in 1962 the "421" and the "421 SD" engine became available as a factory option until 1966. For 1958 the V8's bore was increased again to 4+116in (103.2mm), increasing displacement to 369.4cuin (6.1L). Forged rods and forged-aluminum pistons were specified, as were unique high-flow cylinder-heads. or Best Offer. 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 retained the 421's 4in (101.6mm) stroke and 3+14in (82.6mm) main journal. The Pontiac 2+2 was promoted as the "big brother" to the iconic Pontiac GTO. There was also the addition of dual exhaust, and for vehicles equipped with a manual transmission, a slightly more aggressive camshaft. Duration at .050: 247/252-deg However, it can easily be determined by examining the cost price of the option, where the package excluding the W72 engine cost $251, and with the engine, cost extra at $324.[10]. 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? Unfortunately, there were no improvements in the casting number "01" small-valve high-velocity heads, which would have yielded greater improvements in power. It requires a compression ratio of at least 10.25:1. 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]. Rocker studs: ARP special 34-in bottom For the 1969 and 1970 model years it was the standard engine in both the Firebird Trans Am and the GTO Judge. Additionally, the 301 W72 never received the option to come equipped with a manual transmission like the standard 301 received in 1979, and disappointingly, production for all Pontiac V8's ended soon after as GM sought to "corporatize" engine production. 421 CID V8 - 4BBL - Automatic - P.S. The Ram Air IV replaced the Ram Air II in 1969. 301 Turbo (210hp, 157kW), (with the 5th VIN character being a "T". [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). This may have been propagated by the only authorized company that is licensed to reproduce these decals not including the "6.6 LITRE" in the Trans Am decal kits, and only including "T/A 6.6" with no extra cost. The engine was dubbed the TEMPEST V-8, a nickname it retained until the end of 1960. 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. 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). Located at the back of the engine near the Distributor. Here are features on more than 100, Muscle cars created their own culture. 1966 Pontiac Catalina 1966 Pontiac Engine Data Location Of Engine Code: (Six-Cyl) - On cylinder head-to-block contact surface behind oil filter pipe. 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. - P.B. Information and specs for the Pontiac 421 V8 engine. Laconic would be one way to describe this Pontiac's eBay listing, all it states is, "1966 Pontiac Ventura, 421 Tri-Power, 4 speed Runs/ Drives Great, Very Clean - Garage Kept".OK then, now you know what I know. Vacuum advance: Not usedEXHAUST The piston weighs 630 grams with the pin versus the stock piston and pin weight of 790 grams. It was the top-of-the-line engine unless one opted for the "Ram Air" V-8 derived from it. 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. 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). The valve size increased as well, to 2.11in (53.6mm) intake and 1.77in (45.0mm) exhaust valves on high-performance heads. The 389 V8 was first introduced by Pontiac in 1959. Horsepower: See Part 2 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? [19] The cylinder head design is similar to the Ford FE tunnel-port head used in the GT40 and Can-Am series racing. 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 Engine Torque Specifications. The 421 SD Tri . . "1966 Pontiac 2+2" Price $14000.00. 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. 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. of torque at 3,600 RPM in the Firebird, with only a small throttle restrictor tab on the Firebird being different. Head ID Location 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. Various Pontiac sources have emphatically stated that NO 310hp (231kW) versions of the SD-455 were installed in regular production cars. 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 . 1965 Pontiac LeMans GTO Mecum. This was the beginning of factory supplied performance items such as 4 bolt main bearings and windage trays to reduce friction from crankcase oil. Year. Seat pressure: 110 pounds at 1.600-in All Pontiac V8s from 1955 to 1959 were reverse cooled, known as the "gusher" cooling system. 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. 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". The 1972 455 HO was rated at 300hp (224kW) @ 4,000rpm and 415lbft (563Nm) @ 3,200rpm. The 301 had a bore and stroke of 4in 3in (101.6mm 76.2mm). It was rated at 475hp (354kW). For 1956 the V8 was bored out to 3.9375in (100.01mm), increasing displacement to 316.6cuin (5.2L). 1966 Pontiac Complete 389 Engine YC code 290 HP Block Catalina . Modified versions of this engine were extensively used in NASCAR stock car racing and drag racing competition.