1972 pontiac 455 engine specsdivinity 2 respec talents

The cylinder head has a scallop shape on the exhaust side, and the intake and exhaust ports are directly across from each other just like the HEMI. The Judge option, meeting an untimely death and was discontinued. By 1972 the motor was rated at a modest 250hp (in part due to design changes, combined with the move to net versus gross horsepower), and the GSX would be out of the picture by 1973. First introduced in 1971, the 455 H.O. Ah the things you don't appreciate until they are long gone. How could the dealer legally use the Hurst name if the GP was neither converted by Hurst, nor the dealer licensed by Hurst to do it? Michael is a Power Automedia contributor and automotive enthusiast who doesnt discriminate. of torque and a 1970 Bonneville 455 with 360 HP makes 500Ft. Its factory aluminum intake (No. By 1972, ever-increasing insurance rates and the impact of federal emissions regulations were quickly extinguishing the fire that fueled the first musclecar era. Instead, they were transformed at the selling dealer. According to The Hurst Heritage by Terry Boyce and Bob Licty, production totals for the SSJ were 272 in '70, 157 in '71, and approximately 60 in '72. ownership rights to any content, document or other materials viewed through the I was using a Cam Dynamics Energizer 266 cam (210 degrees @ .050, .440 lift), for the record. The 455 cubic inch version of the motor represented the largest on offer (with 400 and 425 cubic inch engines also available), and it featured a higher deck as compared to the small block V8 then in use by the brand. of torque. Fiinally, the latest modification done to this Poly 318. Oh, I know! Back in 1986, when the Corvette factory aluminum heads came out, I bought a set for my "in process" 350 +.030 engine. fuel consumption and mileage: average estimated by a-c: 29.2 l/100km / 9.7 mpg (imp.) 488945) is under the original code 7042273 Q-jet, the factory unitized distributor (No. I'm interested in buying it if you do. It had near 200k on it. Copyright. 4) version for North America (up to September) specs. Bill, if you don't really want the car or it's contents I think you should contact the people of the San Diego or Southern California chapters of POCI. Home ; Resources ; The Pontiac Engine; The Pontiac Engine. 3) Horsepower/Torque Curve, 1972 Pontiac GTO Coupe 400-4 V8 Turbo Hydra-Matic (aut. RWD (rear- wheel drive), manual 3-speed gearbox. . Says Coulson, "I installed the thermal vacuum switch for the EEC system in the intake manifold coolant passage, and added the correct vacuum hoses from the EEC canister to the switch and from the switch to the carburetor. The SD-455 could be had with a Muncie 4-speed manual gearbox, but the majority of buyers . Having owned five '70 GTOs, a Shadow Gold '72 GTO WW5 and two '72 Formula 455s, Lloyd knew that he would give the Pontiac the care it needed. any 455 block in good condition is a welcome addition. "It was like bringing home a true love," he tells HPP. 3) , model year 1972, version for North America (up to September): For the table with this car full photo gallery and complete technical specifications (including final drive and gear ratios, powertrain description, inside and outside dimensions etc. What Makes This 1949 Buick Sacramentos Best Custom of 2023? Glenn says he had difficulty matching up the gold paint original to his SSJ Grand Prix and turned to Jim Wangers to help him choose the color. The new brand image would be the spear or arrow head. But I suspect the real reason might be that aluminum heats up quicker than cast iron on a cold start . With the help of Chuck Roberts, co-author of the Pontiac GTO Restoration Guide, 1964-1972, Ponder spent the next nine years restoring the GTO to showroom condition. That's how you should view this 1972 Pontiac LeMans Convertible. If that weren't enough, first on the option chart was the L75-code 455 that touted 25 extra ponies, but there was still another available step to the LS5: a 455 H.O. Pontiac GTO Coupe 455-4 V8 Turbo Hydra-Matic (aut. I don't know the mileage that was on ours when we got it, or if it had any major work done before. 3) Detailed Performance Review, 1972 Pontiac GTO Coupe 400-4 V8 Turbo Hydra-Matic (aut. I know that I got hot heater water on my Camaro a good bit sooner with the aluminum heads compared to the prior cast iron heads. or WA (manual trans.). Max Brake Horsepower: 335 @ 4800 rpm Max Torque: 480 @ 3600 rpm Stroke: 4.21 Bore: 4.15 Compression: 8.2 Firing Order: 18436572 The Poly engines had a single rocker shaft instead of a pair, as found on the HEMI, but you cant mistake the canted valves. Rotella. thereby reducing possible hydrocarbon emissions during the cold start testing cycle. Just a interesting note, the 350 Pontiac engine is really a 355, the 428 engine is really a 427, and the 455 is really a 456. "Only" in the year 1964 on full size Pontiac with Roto or Super HydraMatic did you get a "S". I gave them my name and phone number, and they told me they'd ask her when she got home. Disappointed with the dual carbs and the constant adjusting that had to be done to them, the second pair of carburetors that this dual quad saw were removed to make way for a FAST dual quad EZ-EFI kit that was installed on this Plymouth. / 10.9 mpg (U.S.) / 4.7 km/l, more data: accelerations: 0- 60 mph 7.2 s; 0- 100 km/h 7.5 s (simulation automobile-catalog.com); 1/4 mile drag time (402 m) 15.6 s (simulation automobile-catalog.com). There are several diferent head castings used along with other parts. 3) Market Competition, 1972 Pontiac GTO Coupe 455-4 V8 Turbo Hydra-Matic (aut. While the Poly block is different from the LA, there are a lot of interchangeable parts between the two. Cold start problems are a thing of the past, constant tuning is no more, and it just looks really cool. It was likely that the heavy coat of orange that was on everything distracted just enough attention from the shape of the valve covers, and until one takes a closer look it is very similar to any other engine. 3) Detailed Performance Review, 1972 Pontiac GTO Coupe 400-4 V8 (man. Copyright 2023, Antique Automobile Club of America. 3) Standard and Alternative Wheel and Tire Sizes, 1972 Pontiac GTO Coupe 400-4 V8 Turbo Hydra-Matic (aut. If you want PM me and I can put you contact with a friend of mine who is president of POCI. In the fall 1956 Pontiac's general manager Bunkie Knudsen set out to change Pontiac's image. ConditionTwelve years of abuse and neglect had taken a toll on the stunning SSJ. So, the theory of being able to buy gas for a 8.5 to 1 compression ratio, yet with a figured 9.5 to 1 cr on aluminum heads, just didn't work that way for me. The 455 delivered a longer stroke than the 425 (4.25 inches) while sharing the same bore (4.126 inches). He primed the SSJ using DuPont Self-Etching Primer, followed by DuPont Fill 'N Sand Primer, and reattached the body to its frame. After we got the engine installed, I first put some miles on it beforre I started tweaking the ignition timing and such. I am thinking of salvaging the power train. 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"It sure got a workout," he tells HPP. But its more than that with the Poly 318, its just different. Previous years on the 3 speed four range Roto and the 4 speed Super HydraMatic you got (P)park, (N)neutral, (D) Drive left (fourt gear or forth range) (D)Drive right ( 3rd range or 3rd gear) and (L) Low (first and 2nd range or 1st gear and 2nd gear). The original 1963 326 engine is really a 336. 7K3 heads have "4" manifold bolt holes and bosses for drilling and machining for the other two, which most guys into performance using RA3 manifolds or headers drill and tap. 3) Market Competition, 1972 Pontiac GTO Coupe 455 HO 4-speed close ratio (man. Transmission specifications Pontiac GTO Coupe 455 HO Turbo Hydra-Matic (aut. Pontiac produced 1,286 Trans Ams for 1972 model year; all were equipped with the 455 HO engine, while an estimated two-thirds of production received the TH400 automatic. Almost all later model engines do usually have aluminum cylinder heads. Why spend the money on the fender emblems and then use decals everywhere else? The interior was trashed, most of the original options were broken or missing, and the beautiful gold paint was faded. used an otherwise typical-for-1972 Quadrajet with an airflow capacity of 750 cfm, the 1971 455 H.O. His focus was to build the Pontiac as he remembered it in 1975. You do not acquire I guess it was my lucky day-she was willing to sell it and I once again owned the SSJ," he says. We don't know-the dealer appears to no longer exist. Considered the yank it out and put in a big block engine, most people who have a poly 318 have heard it all. It had a similar design to the HEMI, but was less costly to build than the HEMI. We say this because the billing history in the PHS documentation provided by Jim Mattison reveals no drop-ship code of 50-012 near the bottom right-hand corner, which would indicate the GP was sent to Hurst Performance in Roseville, Michigan, for the conversion prior to being shipped to the selling dealer. Sigh, lol. Although Mopar is in his blood, he loves any car that looks great and drives even faster.

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