1966 Pontiac Catalina technical specifications and data. The next 1 or 2 numbers represent the date, and the last number is the year. Pontiac differed from other GM Divisions and most other manufacturers in producing only a single small block V8, rather than adding a larger big block to its line-up. The 301 had a bore and stroke of 4in 3in (101.6mm 76.2mm). 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. 1967 - 400 Ram Air or 428 Code 670. Tri Power engine however was optional. 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. Most likely prompted by its development of the Pontiac OHC six, the GM division built three different experimental SOHC 421 CID V8 engines in the early 1960s. 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. 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. On premium fuel, it was rated at 207 hp at 5200 rpm and . In 1967 the 421 was enlarged to 426.61cuin (7.0L) by increasing its bore to 4.12in (104.6mm). 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. 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. 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 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. A Pontiac SD 421 came with forged steel rods and crankshafts for extra durability. The cylinder heads on the 400 CID version had an intake port volume of 290cc (17.70cuin), nearly twice the size of a typical standard D-port Pontiac head - and flowed in the area of 315cuft/min (8.9m3/min) @ 0.8in (20mm) valve lift; in the realm of the NASCAR-dominating Chrysler 426 Hemi. Even more powerful were the 421 Super Duty V8s that could produce up to 410 horsepower. From a performance perspective, the 2+2 is pretty impressive. Pontiac had prepared for the forthcoming cancellation of the venerable 400 by producing large volumes of the stronger cast "XX" 400 blocks in 1977 that were assembled in 1978, and stockpiled at a warehouse by the assembly plant for later use. Idel RPM Automatic In Drive Notes; 326: 1964: 45S: 0.035: . 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). Unfortunately, that's what happened with the 1963 Pontiac Super Duty 421. Released in 1961, the 421 was a bored and stroked 389 which sported a bore of 4.094 and a stroke of 4.00. He says the Tri-Power setup modified with the addition of the larger '66 center carb will flow 1,050 cfm. 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. 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. PONTIAC : 1965-75Tune-up Specifications : Year: Engine Car Model: Spark Plug Type (AC) - Gap: Point Gap: Dwell Angle: . For the first time, Pontiac offered Tri-Power, three two-barrel carburetors with a sequential linkage (replacing the previous dual-quad set-up). [19] The cylinder head design is similar to the Ford FE tunnel-port head used in the GT40 and Can-Am series racing. 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]. 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. 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). Unlike previous enlargements of Pontiac V8s, it did not replace the 389. It was rated at 376bhp in 1967 and 390bhp in 1968 and 1969. 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. It could only be ordered with a TH200 automatic transmission and a 2bbl configuration. Valvesprings: Crower, dual no damper It retained the 421's 4in (101.6mm) stroke and 3+14in (82.6mm) main journal. 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? moniker from the shaker due to the disappointing public approval as the motor was not deemed to be "High Output". Maximum flow at 28 inches of water Preparation: Disassemble, check ball seat for width, spring tension, plate clearanceHEADS It featured the "744" 301/313 camshaft, which offered more duration and overlap than the "HO". In addition to the more refined cylinder heads, block casting reinforcements in the lifter galley and main bearing oil pan rail area, it had forged connecting rods with larger 716-inch-diameter (11mm) bolts. The consent submitted will only be used for data processing originating from this website. Learn how Classified Ads works . Not where most enthusiasts go first. Car and Driver magazine, which had showcased the infamous Pontiac GTO vs. Ferrari's GTO comparison in 1964, organized another bout between the . 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. CO2, . The 421 SD Tri-Power engine offered during these years produced the highest horsepower of any motor in the Pontiac V8 lineup at 376 bhp. Coil: GM The V8 was phased out in 1981, replaced by GM "corporate engines" such as the Chevrolet 305 cu in small block V8. True Pontiac engines were designed and built in Detroitnot on a computer, but often by GI-bill-educated engineers who grew up working with their hands and now had a slide rule in their pocket instead of a greasy rag. 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. A period-correct battery cranks the high-compression 469-cubic-inch Pontiac engine. 3.75. 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. It was renamed 428 HO for 1968. Only about 400 were produced before the fuel injection system was quietly dropped. Splayed main caps, head bolts tie into main caps. $6.49 shipping. 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. Cougar pulled out of Mustang's shadow with the striped and spoilered 1969 Mercury Cougar Eliminator. The single four barrel was rated at 333 bhp while the Tri-Power version carried a 348 bhp rating. #9770716 aka "716" heads featured a 170cc intake port volume, and were considered a milder "street" version of the vaunted SD421 Super Duty heads. In 1974 it was used in the GTO and was rated at 200hp (149kW) (net). 287. Here are my top six rationales for admiring the 1966 GP. One of the key upgrades were the 6x4 heads. Once corrected the SD-455 was recertified and was released for production in late April 1973. 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. Pontiac did not release official power ratings for this engine, saying only that it had more than 300hp (224kW). 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. Likewise, the top 428 carried the same 376-hp rating as the 1966 Pontiac 421 Tri-Power motor. Though production cars only got the two hood air inlets the name was retained. These same heads were also used on the 1964 GTO 389 tri-power engines. 1968 - 400 Ram Air II Round Port Code 96. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. . Reductions in reciprocating weight free up horsepower. 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. A mechanical system built by Rochester, it was similar in principle, but not identical, to the contemporary Chevrolet "fuelie". This was underrated at 330hp (246kW). "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. street engine. The piston weighs 630 grams with the pin versus the stock piston and pin weight of 790 grams. Fuel line size: 38-inch, 516-inch to carburetor which was seen on the hood of the 1957 Daytona Grand National winning car driven by Cotton Owens. Engine Oil: 95 ft-lbs. Also, a rumored 75 cars were built with non-Super Duty 421 engines rated at 320 bhp. This engine was first offered in 1967 as the top engine option in full-size Pontiacs. [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). 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. In 1967, the cylinder head design was improved for the 400 4-barrel engine. Both used a single two-barrel carburetor. This 356hp monster is backed by a 4-speed manual transmission, while the Pontiac also features power steering and power brakes. Jets, Primary: Center #64 adjust power valvespring for 12 Hg at 1,000 rpm 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. 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. 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]. [citation needed]. 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. View the Pontiac Engine Torque Specifications for engine repairs and rebuilds. designs, the SD-455 was a much improved engine. 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). Retainers: Crower steel 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. As Pontiac's 1967 performance brochure said, "You can add the Ram Air induction hood scoop and new high output cam and valve springs to the Quadra-Power 400 for better top end breathing." Pistons: Icon PN IC892 application 428 +0.030-in with 10cc dish 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. It also sports the four-speed manual, limited . Offered from 1967 to 1969, it produced 360 and 376hp (268 and 280kW) in 1967, 375 and 390hp (280 and 291kW) in 1968 and 360,370 and 390hp (268,276 and 291kW) in 1969. Pontiac successfully competed against more-expensive inline four-cylinder models with their inline flathead six-cylinder engines. Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. Preparation: Weigh, soap-and-water wash 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.Flamboyantly styled and expansively proportioned, the 2+2 was unbeatable for sheer presence. 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). A three-speed stick was standard; a four-speed and automatic cost extra. For 1956 the V8 was bored out to 3.9375in (100.01mm), increasing displacement to 316.6cuin (5.2L). The development of this V8 dates back to 1946, when engineers began considering new engine designs for postwar cars. These are general guidelines. Note the tri-color Pontiac Ventura upholstery. Here are features on more than 100, Muscle cars created their own culture. Pushrods: LPC chrome moly The short deck engine weighed about 40lb (18kg) less than the other variants and had an 8000 rpm redline. 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. The GTO came with a four-barrel 389 V8 with 335 horsepower. Engine Year Info Spark Plug Plug Gap Point Gap Dwell Angle Timing (BTDC) Idel RPM Manual Tran. 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). Pre-Owned. The new-for-1965 "Venturi" body shape and curved side glass were carried over with updates front and rear. Pontiac first offered the 2+2 as a Catalina engine, suspension, and trim group in 1964. Preparation: Cook, bead blast, magnaflux, bore, true decks, align bore Free local pickup. 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. A mere five were built, all with a four-speed transmission. The Ram Air II also incorporated the first computer-designed camshaft. For 1967 only Pontiac called this engine the Quadra-Power 428. The W72 301 was a tuned L37 301 Pontiac V8 with some minor upgrades. Standard in the Firebird Trans Am, it was still a rare engine. 1975 Factory Service Manual lists the SD-455, but the SD-455 did not meet emissions for the 1975 model year and was canceled. 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. 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. In 1963 Pontiac dropped the Buick division built 215 cu. The manuals had Hurst shifters. Primary tube length: approximately 31.00 inches Read. [4] It was replaced by the 455 for the 1970 model year. . Engine Oil: 120 ft-lbs. 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. Ram Air induction was optional in the GTO, though power ratings were unchanged. 10 with 308/320 degrees of duration and 0.445/0.447-inch lift (11.3/11.4mm) with 1.65:1-ratio rocker arms and solid lifters, special #529238 forged-steel connecting rods, forged aluminum 4.09-inch (104mm) bore Mickey Thompson pistons, #542990 forged-steel crankshaft with a 4-inch (101.6mm) stroke and 3+14-inch (82.6mm) diameter main journals. 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 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. VEHICLE TYPE . Engine block and cylinder heads were cast at Saginaw Metal Casting Operations then assembled at Tonawanda Engine before delivery to Pontiac Assembly for installation. 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. Setting initial timing at idle with the vacuum advance disconnected will usually fall around 12 to 16 degrees, but that's not really important. . 1966 Pontiac Complete 389 Engine YC code 290 HP Block Catalina . 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. 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. 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 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. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. It was the top-of-the-line engine unless one opted for the "Ram Air" V-8 derived from it. High output Pontiac V8 Cylinder Heads. Lobe separation angle: 112-deg Where else will the extra 100 horses come from? While not related to the 400 W72, the concept was the same. Pontiac Engine Torque Specifications. Oil pan: 8-quart with extended pick-up, fabricated retention clamp The 421 also marked the end of the option for a forged-steel crankshaft. 1966: 421: 9782611 (late) 1967-1969. This was the beginning of factory supplied performance items such as 4 bolt main bearings and windage trays to reduce friction from crankcase oil. 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". "1966 Pontiac 2+2" 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. Optional was the obligatory four-speed manual or new-for-1965 Turbo-Hyramatic three-speed automatic. For the 1969 and 1970 model years it was the standard engine in both the Firebird Trans Am and the GTO Judge. Timing chain: LPC, double rollerINDUCTION Despite their work, the division's conservative management saw no immediate need to replace the Pontiac Straight-8 until later in the 1950s. Only 157 Ram Air IV Firebirds, including 55 Trans Ams, were built for 1969. Like previous generations of Ram Airs, it used Pontiac's special cast-iron "headers". Horsepower: See Part 2 In 1961 and 1962 they were available with either one 4 barrel carburetor or a dual 4 barrel carburetor setup depending on whether the buyer wanted to head to the racetrack or drag strip. 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. Seat pressure: 110 pounds at 1.600-in (imp.) Tri-power engine rated at 376 hp. Standard motor was the 421 4 barrel with 342 horsepower, which was no slouch itself. 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. Stating in 1962 the "421" and the "421 SD" engine became available as a factory option until 1966. According to the engineers who worked on the project, the SOHC 421 engines produced around 625hp and were capable of turning 7,000 rpm. Engine, horsepower, torque, dimensions and mechanical details for the 1966 Pontiac Catalina. Valve lift stayed at just over 0.400-inch with 1.5:1-ratio rocker arms. Pontiac ignited the classic muscle car era with a stroke of marketing genius. Required airflow at 28 in/H2O = HP/ # of cylinders/0.257 More 400cuin (6.6L) engines were produced by Pontiac than the other versions - estimates range from 80 to 200 units. Pontiac engines were used in its U.S.-market cars; Canadian-built Pontiac automobiles generally used Chevrolet engines. There are no manual transmission equipped Trans Ams that came factory with the standard L78 400 motor in 1977-79. The overhead-cam six-cylinder engine was new for 1966 and the standard engine in the Tempest and Tempest Custom. SELLER Glendale, Arizona 85305. On this Wikipedia the language links are at the top of the page across from the article title. All W72 equipped Trans Ams featured the "T/A 6.6" shaker decal. Jim Taylor, well-known Pontiac engine builder, had that question on his bucket list for years. The 1955-up Pontiac V8 that finally reached the public was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers. Pontiac continued using its round-port cylinder-head design for 1971-'72 on the 455 HO. To learn about it, read. Pontiac introduced the OHC 6 in two flavors for '66: a base engine with a one-barrel carburetor that developed 165 hp at 4700 rpm, and a sportier version with a 10.5:1 compression ratio, a high-lift cam, a split exhaust manifold, and GM's new four-barrel Quadrajet carburetor (below). Mods: Intake port match, valve bowl blend, improved short-turn radius 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. 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. 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. ][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. Torque: See Part 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). 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). Bearings: Sealed-Power mains and rods, cam Dura-Bond The company says engines running this cam benefit from headers, cylinder-head port work, a large-cfm carb, and an ignition upgrade. 544127 with larger 2.02/1.76-inch (51/45mm) valves entered production. The 1963 Catalina two-door sports sedan pictured here showcases the 421 H.O. The Pontiac 301 EC (Electronic Controls) version offered in 1981 produced 155hp (116kW) and 245lbft (332Nm), although it's rumoured that the actual output was closer to 170hp (127kW). Over the years he has amassed a library of data from investing in metallurgical testing with a well-respected laboratory. However, the 1959 389 engines had the generator in front of the heads with reverse flow cooling still in use. 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. . Some 400s were dealer installed. 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. 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. 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 389 would remain the standard Pontiac V8 engine through 1966, offered in a bewildering variety of outputs ranging from 215 to 368hp (160 to 274kW). of torque at 3,600 RPM in the Firebird, with only a small throttle restrictor tab on the Firebird being different. Vacuum advance: Not usedEXHAUST The last was the 421 HO and included a high-output camshaft and valve train. gasoline (petrol) engine with displacement: 6902 cm3 / 421.2 cui, advertised power: 252 kW / 338 hp / 343 PS ( SAE gross . Head mods: Port, cook, magnaflux, glass bead, convert to screw-in studs Both of these engines were originally dealer-installed options, but since the NHRA moved to limit racing eligibility to factory-available options on cars available to the public, Pontiac made the SD 421 a factory option for 1962, and most of the approximately 164 SD 421 engines were installed in the Catalina, with another 16 being installed in . Block/Crank combo: '64 four-bolt 421 / '64 OE 4.00-in stroke 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. It tips the scales at 3,950lbs. Jim Taylor knows this, so he took a mathematical engineering-style approach to finding 100 hp in a relatively optimized engine. For 1958 the V8's bore was increased again to 4+116in (103.2mm), increasing displacement to 369.4cuin (6.1L). Contemporary road tests suggest that it was actually somewhat inferior to the Tri-Power engines, although it did have better fuel economy. The SD-389 was limited to a single 4-barrel while the SD-421 used dual 4-barrels. Furthermore, this car had an automatic, air conditioning, a 3.08 axle and weighed 4,010 pounds (1,819kg). In 1961 Pontiac continued to push the horsepower upwards with the release of the 421 engine. In 1970 the casting number #9799914 Ram Air 400 4-bolt main block also used the 4-bolt main caps on Ram Air applications. Cam was a #541596 McKellar No. Pontiac offered Tri-Power on select models and engines (347, 370, 389, and 421 CID) from 1957 through 1966, when it was finally . A limited-slip differential and gearing up to 4:11.1 were optional. Styling for Status. 421 CID V8 - 4BBL - Automatic - P.S. The Pontiac 2+2 was promoted as the "big brother" to the iconic Pontiac GTO. Type Size Carb Horse Power Tourqe; Tri-Power: 389ci: 3x2bbl: 360 hp @ 5200 rpm: 424 lb-ft @ 3600 rpm: Base 8 .
The Greatest Barrier To Effective Collaboration In Schools Is:,
Delaware Valley University Football 2022 Schedule,
Long Funeral Home Obituaries,
Articles OTHER