Maximum RPM (high-RPM engine): over 8000 rpm, Engine weight: estimated 550lb (249kg) complete, Power: estimated 640hp (477kW) at 7500rpm, This page was last edited on 30 January 2023, at 13:15. None of Pontiac's Ram Air engines actually enjoyed any true ram air effect. Officially named the Quadra-Power 400 for 1967 and renamed 400 HO for 1968, the 400 HO was first offered for 1967 as the third engine in the GTO line after the automatic-only 400 2-barrel and the standard 400 4-barrel (the 400 HO would not be offered in the Firebird until the 1968 model year). For those who may not be familiar with the equation, here it is again: 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 Pontiac 389 engine was produced from 1959 to 1966, and has a 4.06" bore and 3.75" stroke. 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. The Pontiac Engine - Butler Performance in. Like the 326, it was offered in both 2-barrel and 4-barrel versions. Oil pump: . - P.B. 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. 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. Pontiac Engine Torque Specifications. Pontiac engineers tested their 269cuin (4.4L) V8 in 1949 or 1950 against an OHV Oldsmobile Rocket V8 303cuin (5.0L) downsized to 270cuin (4.4L). See profiles, photos, and specifications of, Muscle cars came in many shapes and sizes. Though a change of camshaft would delay production, Pontiac decided to change camshaft, employing one with identical timing to the 744 camshaft, which had been used in the 400 Ram Air(aka Ram Air III) engine with manual transmissions. HP = flow at 28 in/H2O x 0.257 x # of cylinders. This was the beginning of factory supplied performance items such as 4 bolt main bearings and windage trays to reduce friction from crankcase oil. 1966 Pontiac 2+2 for sale near Rogers, Minnesota 55374 - Classics on Only one is known to survive today. Rod/Stroke ratio: 1.65:1BOTTOM END Bore/Stroke: 4.150/4.00-in 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). Both Randy and Stan were aware of the . 421 H.O. Tri-Power Engine Build - Part 1 - High Performance Pontiac Engine displacement is a function of bore and stroke. All 196869 #9792506 Ram Air 400 blocks have 4-bolt caps. 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. All Pontiac Catalina 2-Door Sedan versions offered for the year 1966 with complete specs, performance and technical data in the catalogue of cars . Other dimensional factors such as the wheel base, curb weight and length were largely unchanged. The 2-barrel version was last offered in 1979. The 421 SD Tri . The Ram Air IV heads had 1/8" taller intake ports, larger intake port volume with more airflow, yet shared the Ram Air II round exhaust ports. 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. The engines feature a cast-iron block and head and two valves per cylinder. He says the Tri-Power setup modified with the addition of the larger '66 center carb will flow 1,050 cfm. For 1970 the Trans Am was the only Firebird available with the Ram Air IV, and 88 were produced during the abbreviated 1970 F-body production run. Maximum flow at 28 inches of water Pontiac Engine Torque Specifications Chart - RodsShop 301 2-barrel (135hp, 101kW), (5th character of the, 301 4-barrel (150hp, 112kW), (5th character of the. 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]. This was a completely stock car on loan from a private owner for the test. 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. Car and Driver magazine, which had showcased the infamous Pontiac GTO vs. Ferrari's GTO comparison in 1964, organized another bout between the . All W72 equipped Trans Ams featured the "T/A 6.6" shaker decal. 1968 - 400 Ram Air I and 428HO Code 37" Ram Air I and. The 1968 Ram Air II remained at 400 cu. Duration at .050: 247/252-deg 1963 Pontiac V8 Engine Specs. The 389 V8 was first introduced by Pontiac in 1959. 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. Horsepower: See Part 2 A common misconception made by enthusiasts was the notion that all Pontiac engine equipped Trans Ams featured the "T/A 6.6" decal on the shaker, however, it was exclusive to the W72 engine that was featured on less than half of all Trans Ams made during this period. 1966 Engine Codes ; Code: Application: Displacement: Compression: Horsepower: Transmission: Heads: Camshaft: Carb: WA : 389: 8.6:1: 256: Manual: 91: 254: 2 bbl: WB . 1962 - 389 SD Code 544127. Rocker studs: ARP special 34-in bottom As a result, it was remarkably free of teething problems. 15 GTO facts you might not know about America's original muscle car HPP decided to follow this exciting exercise; we show you the highlights in this two-part primer. 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). Though airflow is paramount in making power, there are other aspects of the engine that are just as important. 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. Timing chain: LPC, double rollerINDUCTION More 400cuin (6.6L) engines were produced by Pontiac than the other versions - estimates range from 80 to 200 units. 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]. The Pontiac 455 V8 was The GTO and Firebird Brand's Last "Big Block" 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. Carb: (3) Rochester two-barrels PMD 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. 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. The 389 was the standard engine on the GTO up to 1966. If you've been thinking about cruising the local boulevard in a classy convertible, but find yourself longing for the power under the hood that only a muscle car provides, perhaps it's time to take another long look at Pontiac's restyled 1965 Bonneville convertible. $6.49 shipping. Engine Specifications. Thus, the quest to find 100 hp in a 421 started on the flow bench, before a wrench or machine tool touched any part of the 49-year-old engine. To learn about it, read. Beginning in 1967 casting nnumbers moved to the rear of the block just behind cylinder #8 . These same heads were also used on the 1964 GTO 389 tri-power engines. 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. The 1969 HO 350 HO was equipped with the 400cuin (6.6L)'s large valve heads (# 48's) and the 400 HO camshaft and rated at 330hp (246kW). 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 . Pontiac V8 Engine Tune-Up and Torque Specifications. 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. 1966: 421: 9782611 (late) 1967-1969. Standard motor was the 421 4 barrel with 342 horsepower, which was no slouch itself. Six reasons to revere the 1966 Pontiac Grand Prix | Hemmings The stroke increased to 4.21-inch (106.9mm). This was the last run for the 455 (7.5 L) motor from Pontiac, and production ceased on the 455 this year as it could no longer meet the emissions requirements any longer. By 1979, Pontiac was no longer allowed to produce the 400 engine as emissions further tightened. 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. ENGINE TYPE Water-cooled V-8, cast iron block and head Displacement 428 in 3, 7015 cm 3 Power 390 hp @ 5200 rpm Some of our partners may process your data as a part of their legitimate business interest without asking for consent. 1966 Pontiac GTO. 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. 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). Block casting # 9773157. Surprisingly, Mopar actually agreed and sent over several of the engineers that designed both the 392 and 426 Hemi. . The 1980 301 Turbo was rated at 210hp (157kW) at 4400rpm and 345lbft (468Nm) @ 2800rpm. Various Pontiac sources have emphatically stated that NO 310hp (231kW) versions of the SD-455 were installed in regular production cars. The crankshafts were also unique in the fact that they featured only two counter weights instead of the usual five and also featured lightened connecting rod journals. . For 1974 another 1,001 (943 Trans Am, 58 Formula) were built, after which the SD-455 was discontinued. Free shipping on many items | Browse your favorite brands | affordable prices. Like previous generations of Ram Airs, it used Pontiac's special cast-iron "headers". Displacement (CID) Bore (Inches) Stroke (Inches) Mains (Inches) 1955. A panel covers the dash opening where the radio would have been on a standard Catalina. Simply put, what good is the power if the engine does not last? 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. In 1970 the casting number #9799914 Ram Air 400 4-bolt main block also used the 4-bolt main caps on Ram Air applications. 5 January 2007. In 1969, Pontiac also used a revised crankshaft out of a Pearlitic malleable-iron, although it still used the "N" casting letter. Beginning in 1961 the Pontiac V-8 (389 and 421) was dubbed the Trophy V-8, due to its many victories in racing. The Armasteel cast crankshaft was the standard hardened cast-iron crankshaft used throughout the entire Pontiac V-8 line until 1967. Pontiac Heads; Pontiac Engine Torque Specs; Pontiac Cars (Body Types) Pontiac Engine Information; Instruction Sheets; Compression Calculator; Ask a Tech Question; Customer Service. With higher compression and dual exhaust it produced 280hp (209kW) for 19631964, and 285hp (213kW) for 1965 through 1967, its final year. Building a rare Pontiac Catalina Royal Bobcat piece by piece Modified versions of this engine were extensively used in NASCAR stock car racing and drag racing competition. 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. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS . 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." Power output ranged from 135hp (101kW) to 170hp (127kW). In 1977 the 400-cubic-inch (6.6L) T/A 6.6, (RPO code W72) was created to fulfil the performance engine gap in the Pontiac line-up. Math, not gasoline, makes horsepower under the hood of a Pontiac. Setting initial timing at idle with the vacuum advance disconnected will usually fall around 12 to 16 degrees, but that's not really important. By 1949 work on a 287cuin (4.7L) OHV V8 had begun, but moved along slowly. The camshaft was the HO cam with 288/301 duration. Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. 1966: 421: 9782611 (late) 1967-1969. In 1967, the Pontiac 2+2 became an option on the . in., again available only in the GTO and Firebird. All Pontiac Bonneville Convertible versions offered for the year 1966 with complete specs, performance and technical data in the catalogue of cars . 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. Returns; . It's well documented that an internal combustion engine is nothing more than an air pump. 287. Year: CU IN: Casting # 1967: 326. Final torque ratings may vary and need to be determined based on application and parts used. A higher-output version was offered, called the 326 HO (High Output). A larger 4in (101.6mm) ram air flex duct to the air cleaner from the left-hand fender, specific carburettor calibration for the Rochester Quadrajet, a "T/A 4.9" callout on the shaker, 60 psi oil pump, and cam similar in grind to the 220hp (164kW) 400 from the 19781979 model year were also included. An example of data being processed may be a unique identifier stored in a cookie. [citation needed] It was the first engine that incorporated Pontiac's round-port head design in a production vehicle, however the intake port was the same as other D-port heads, leaving a head which exhaust port could nearly match the intake at high valve lifts. Lift: 0.515/0.525 with 1.6:1 rockers 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 concept car Pontiac Strato-Streak was used to introduce the V8 and in later years the engine was installed in Pontiac products. for 1980, and the 8th being a "T" for 1981). It also could hold its own against a range of performance cars. It featured the "744" 301/313 camshaft, which offered more duration and overlap than the "HO". It was rated at 376bhp in 1967 and 390bhp in 1968 and 1969. Optional was the obligatory four-speed manual or new-for-1965 Turbo-Hyramatic three-speed automatic. 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. Located at the back of the engine near the Distributor. Learn how Classified Ads works . 1966 Pontiac Catalina . 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. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. To determine horsepower from airflow, invert the equation: Royal Pontiac developed the prototype of the package on their 1965 GTO drag car and Pontiac picked up the idea and in August 1965 Pontiac offered the new Fresh Air package to dealers consisting of the parts and instructions needed to make the hood scoop functional, including the metal tub to mount to the carburetors and rubber gasket to seal it to the underside of the hood. It also sports the four-speed manual, limited . These muscle car profiles include photos and specifications for each model: For related car information, go to these articles: Please copy/paste the following text to properly cite this HowStuffWorks.com article: the Auto Editors of Consumer Guide Engine options for the 1966 Pontiac Ventura were a 389 and 421 cubic inch V-8. 1963 - 389 SD Code 543797. Pontiac listed the 290hp (216kW) rating at 4000 rpm for a motor that had a 5700rpm redline on the factory tachometer. SB International 00958 1963-1966 Pontiac 389 421 Engine 1.920" Intake Valves (Fits: 1966 Pontiac GTO) $7.98. Valve lift stayed at just over 0.400-inch with 1.5:1-ratio rocker arms. Unfortunately, that's what happened with the 1963 Pontiac Super Duty 421. SELLER Glendale, Arizona 85305. In 1967 the 421 was enlarged to 426.61cuin (7.0L) by increasing its bore to 4.12in (104.6mm). 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 421 badging was standard on the 2+2, the 421 H.O. The engine compartment of this concours Catalina is beautifully finished. View the Pontiac Engine Torque Specifications for engine repairs and rebuilds. 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. It could only be ordered with a TH200 automatic transmission and a 2bbl configuration. It had a four-barrel carburetor, dual exhaust, and higher compression, and was good for 280hp (209kW) for 19631964, and 285hp (213kW) for 1965 - 1966 and the final year, 1967. 1968 Pontiac GTO 428 / Royal Bobcat. 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. For 1959 the V8's stroke was increased to 3+34in (95.3mm), raising displacement to 389cuin (6.4L). The 400 HO was offered as an option for 1967-1970 for GTO and 1968-1970 for Firebird. 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. 1967 - 400 Ram Air or 428 Code 670. All GTOs built from 1964-66 were powered by a 389-cubic-inch V-8 with 10.75:1 compression. As with all other Pontiac V8 motors that evolved from the 316 V8, the 421 was simply a bored out and stroked version of the popular Pontiac 389 V8. The Ram Air II also incorporated the first computer-designed camshaft. Along with a cam swap it boosted horsepower from 325 hp with the four-barrel carb to 348 hp in '64. [5] It was rated at 360hp (268kW), but the Grand Prix with the same specifications was rated at 370hp (276kW).[6]. 1966 Pontiac Catalina Along with the HO it also had Pontiac's famous cast-iron "headers", which were much better at reducing backpressure than the regular manifolds. 1965-'66 Pontiac Catalina 2+2 | Hemmings Metallurgy of the critical parts is an area often overlooked, but not by Jim Taylor. In addition, a shallower spherical-wedge combustion chamber moved the tuliped valve heads .040" closer to the piston at TDC, improving mixture draw considerably during the intake stroke. These heads can be distinguished from 6x8 heads through a small stamped "4" on the top of the front boss. For the 1967 GTO the engine was rated at 360bhp (268kW; 365PS) and had the cast-iron headers. Contemporary road tests suggest that it was actually somewhat inferior to the Tri-Power engines, although it did have better fuel economy. Intake manifold: Original '64 PMD tri-power It was the top-of-the-line engine unless one opted for the "Ram Air" V-8 derived from it. The shaker wore the decals "455 H.O." Muscle cars wouldn't have much muscle without horsepower -- but what exactly is horsepower? In 1963 Pontiac dropped the Buick division built 215 cu. It was renamed 428 HO for 1968. While not related to the 400 W72, the concept was the same. 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. Most Pontiac engines were painted light blue. 1967 - 400 Ram Air Code 97. 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. 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. Head bolts do not pull on the cylinder wall causing distortion. These guys lived by mathematics since every function of an engine that converts chemical to mechanical energy can be assigned a number. Standard only for the Pontiac Bonneville was Pontiac's first-ever fuel injection system. Pontiac 421 Tribute to the legendary muscle car engine
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