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. Shipping to: 98837. 1966 Pontiac Catalina 2-Door Sedan full range specs - Automobile-Catalog pontiac engine decoder year code c/i hp tran carb car misc 1962 13b 421 3 m 2 x 4 full super duty 1962 13u 421 4 m 2 x 4 full super duty 1962 bu 421 4 m 2 x 4 full super duty . designs, the SD-455 was a much improved engine. Beginning in 1967 casting numbers moved to the rear of the block just behind cylinder #8. Head bolts do not pull on the cylinder wall causing distortion. The standard head seen on an L78 400 Pontiac was the low compression 6x8 head, while the 6x4 head seen on the W72 had hardened valve seats for a higher RPM operating range, improved air flow, and higher compression. Preparation: Install in rod, torque, measure ID Example: A128 = January 12, 19*8. Cougar pulled out of Mustang's shadow with the striped and spoilered 1969 Mercury Cougar Eliminator. 287. Secondary: Front and rear #70 In 1967, the Pontiac 2+2 became an option on the . The 455 HO designation made its debut in 1970; Rated at 360 or 370hp (268 or 276kW) (depending on which vehicle it was installed into) & 500lbft (678Nm) of torque, it differed from the regular full sized car 455 by large valve heads with smaller combustion chambers, and a larger camshaft. A concave rear window, fender skirts, and ribbed die-cast lower body trim, augmented the Grand Prix's upscale appearance. The Best Features Of The Pontiac 2+2 - HotCars Information and specs for the Pontiac 421 V8 engine. The Armasteel cast crankshaft was the standard hardened cast-iron crankshaft used throughout the entire Pontiac V-8 line until 1967. 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. The 2+2 package was first offered as a $291 option on Catalina hardtops and convertibles in 1964. 1966 Pontiac 2+2 Convertible 1966 Pontiac 2+2 Convertible Displacement began at 287-cubic-inch (4.7L) and grew as large as 455-cubic-inch (7.5L) by 1970. Engine Displacement: 432 ci 1966 Pontiac Catalina . 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. Pontiac went to open-chambered heads in some 1967 models and all 68 and up to improve power, engine breathing and reduce emissions. Price $30000.00. 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. Other dimensional factors such as the wheel base, curb weight and length were largely unchanged. The heads were a new design featuring siamesed intake ports. 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. Tested: 1968 Pontiac GTO 428 / Royal Bobcat - Car and Driver To learn everything you need to know about car engines, see. . A History Lesson in Pontiac V8 Power - Engine Builder Magazine The 421 also marked the end of the option for a forged-steel crankshaft. Free-flowing exhaust manifolds from the 400 Ram Air were used late in the model year. Where else will the extra 100 horses come from? 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. 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. To determine horsepower from airflow, invert the equation: 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. Standard only for the Pontiac Bonneville was Pontiac's first-ever fuel injection system. 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). However, a few dealers would offer them in the GTO or Firebird and do their own installations, such as Royal Pontiac who offered the "Bobcat" conversion. The 400 HO was offered as an option for 1967-1970 for GTO and 1968-1970 for Firebird. The basic package included the heavy-duty suspension, with even stiffer springs and shocks available. Though production cars only got the two hood air inlets the name was retained. Bore and stroke were 4.121in 2.84in (104.7mm 72.1mm) 303.63cuin (4,976cc). A new engine was fast-tracked, its relatively late start allowing it to take advantage of developments proven in the Oldsmobile V8 and Cadillac V8. Head ID Location pontiac timing ???????? | The H.A.M.B. Like the 421, the 428 used a large-journal crankshaft, but externally it was the same size as all Pontiac V-8s of that era (the later 301 used a shorter deck height). It tips the scales at 3,950lbs. 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. (imp.) Surprisingly, Mopar actually agreed and sent over several of the engineers that designed both the 392 and 426 Hemi. Mods: Flow-test indicated '66 center carburetor would be required to improve total cfm, adapter made to fit '66 center carburetorIGNITION . 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). 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. Along with proper parts selection, accurate machining and assembly are also important. 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. What is important is the total timing, the . Based in part on designs for the "short deck" 303cuin (5.0L) engine designed for the 1970 racing season, it had a shorter deck than the big V8, and used thin-wall castings to reduce weight. 544127 with larger 2.02/1.76-inch (51/45mm) valves entered production. Valve guides: K-Line, liners Over the years he has amassed a library of data from investing in metallurgical testing with a well-respected laboratory. Like the 326, it was offered in both 2-barrel and 4-barrel versions. Six reasons to revere the 1966 Pontiac Grand Prix | Hemmings 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. The Pontiac 2+2 featured a 6.9 L V8 engine, heavy-duty front springs, dual exhaust and distinctive exterior body design. Free shipping on many items | Browse your favorite brands | affordable prices. 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. . VEHICLE TYPE . Oil pump: . 1966 Pontiac 2+2 $64,995. In 1969, Pontiac also used a revised crankshaft out of a Pearlitic malleable-iron, although it still used the "N" casting letter. The Pontiac 2+2 is a full size automobile that was manufactured by Pontiac, built on the B-body chassis.It debuted for the 1964 model year as a trim-only option for the Pontiac Catalina, with special door panels, bucket seats with a center console, and exterior badging.Pontiac marketed the 2+2 as the "big brother" to the popular Pontiac GTO.. Beginning in 1965 the name Catalina was no longer . PONTIAC : 1965-75Tune-up Specifications : Year: Engine Car Model: Spark Plug Type (AC) - Gap: Point Gap: Dwell Angle: . Pontiac engine production records report that 190 XS-code 389 engines were built during the 1966 model year. 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. Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke 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? Original plans called for a forged crankshaft, although actual production SD455s received nodular-iron crankshafts with minor enhancements. After the 1974 SD455 was dropped the 1975 Firebird's top performance engine was an 'L78' Pontiac 400cuin (6.6L). Pontiac 421 V8 Specs, Firing Order and Engine Information - Engine Facts 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. 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. Engine Block Date Code. Thus in March 1973 Pontiac eliminated a timing solenoid that gave full vacuum advance and disabled the EGR valve in high gear after a period of time that happened to exceed the running time of the EPA testing cycle. and so the 326 bore size was reduced to 3.72in (94.5mm), giving a true 326.06cuin (5.3L). Retainers: Crower steel A 400 cubic inch ram air equipped V8, it was an option on the 1969-70 GTO and Firebird Formula. Model Number: Body/Style Number: Body Type & Seating: Factory Price: . 15 GTO facts you might not know about America's original muscle car This 356hp monster is backed by a 4-speed manual transmission, while the Pontiac also features power steering and power brakes. The four-barrel version with 10.5:1 compression upped horsepower to a healthy 285. . Pontiac V8 Engine History: 1955-1981 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). As a result, it was remarkably free of teething problems. - P.B. SPECIFICATIONS. Even more powerful were the 421 Super Duty V8s that could produce up to 410 horsepower. Tri-Power equipped Pontiac hot roda stout piece by anyone's standards. Still, it was the strongest American engine offered that year. The compression ratio will be 10.6:1. Forged rods and forged-aluminum pistons were specified, as were unique high-flow cylinder-heads. 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. Rear Main Cap. 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. 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. Primary tube diameter: 1.75-in The L75 455 engine continued as an option into the 1976 model year for the Trans Am, however, Pontiac opted to drop the "H.O." Mechanical advance: 36-deg at 3,200 rpm From 1969 though 1970, the Ram Air IV was available in both A-Body (GTO, including Judge) and F-body (Firebird, including Trans Am) form. The mighty Pontiac 421 was a star on the drag strip and a super nova on the Nascar tracks of the first half of the 60s. Rod bolts or studs/head bolts or studs: ARP cap screw supplied in Howard's rods / PMDOILING SYSTEM The 1980 301 Turbo was rated at 210hp (157kW) at 4400rpm and 345lbft (468Nm) @ 2800rpm. . The base engine was the 421 four-barrel with 338 horsepower. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. These guys lived by mathematics since every function of an engine that converts chemical to mechanical energy can be assigned a number. The Ram Air IV also used a lightweight aluminum intake-manifold that produced a weight savings of 1015lb (4.56.8kg). Headers: Hooker Super Comp (for dyno test) Lifters: Crower solid with EDM oil hole (0.024 inch) 3.75. 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. The 421 Super Duty had been the first of these, and their large bore and stoke made them popular in NHRA and NASCAR competition throughout the '60s. 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). 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. The W72 301 was a tuned L37 301 Pontiac V8 with some minor upgrades. 1966 Pontiac GTO - Muscle Car Facts 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]. Update your shipping location. From 1959 to 1966 Pontiac continues making improvements. It was rated at 250hp (186kW) with 8.6:1 compression and 260hp (194kW) at 10.25:1 compression. 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 421 SD became factory installed in 1962 and in 1963 a street version became available from the factory with a dual four-barrel or three two-barrel Tri-Power carburetion. ARP - The Official Site | Pontiac Kits 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. ][citation needed] T, While the exact total number of Ram Air V engines produced is not positively known, only about 25 303cuin (5.0L) engines were produced and about a dozen 428s and 366s. This was the beginning of factory supplied performance items such as 4 bolt main bearings and windage trays to reduce friction from crankcase oil. Known as GM's performance-oriented division, Pontiac lived up to the hype by creating the first Muscle Car and kicking off the Muscle Car era. Tri-power engine rated at 376 hp. The V8 engine was introduced for the 1955 model year as the "Strato Streak". 1963 Pontiac V8 Engine Specs. In 1967, the cylinder head design was improved for the 400 4-barrel engine. 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. The 1972 455 HO was rated at 300hp (224kW) @ 4,000rpm and 415lbft (563Nm) @ 3,200rpm. Learn how Classified Ads works . pontiac 421 complete engine for sale | eBay Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. 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. It included a new camshaft with duration increased from 288/302 (No. Preparation: Wash after balance for assembly Here is another number to ponder: 370 hp. Mods: Built to factory specifications/ adapt '64 choke to '66 center carburetor However, the 1959 389 engines had the generator in front of the heads with reverse flow cooling still in use. The 389 was the standard engine on the GTO up to 1966. 1966 Pontiac Ventura / Photos, Specs, Design - Auto Museum Online 1962 Pontiac Catalina, Royal Bobcat Super Duty 421. 1967 - 400 Ram Air or 428 Code 670. See profiles, photos, and specifications of, Muscle cars came in many shapes and sizes. Regarding Crower's upgrade suggestions for its camshaft, Jim pretty much has it covered. The tri-power equipped XS-code 389 was shipped with the Ram Air pan in the trunk, and the dealer had to fit it and cut out the underside of the hood scoop to make it functional.
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