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Which motor has the most horsepower a Pontiac 455 or Buick 455?
The Pontiac 455 came in 3 versions. Base, High Output, and Super Duty. The base 1970-71 engine produced 200 hp and 455 lb/ft torque. The Super Duty 1970-71 engine had 335 hp and 480 lb/ft torque. Power was reduced after 1971. The Buick 455 came in 2 versions. The 1970 Base engine had 350 hp and 510 lb/ft torque. The Stage 1 engine had 360 hp and 510 lb/ft torque. So as you can see the Buick was the more powerful engine by far.
What are the rocker arm torque specifications for a 455 cubic inch Oldsmobile engine?
According to most Oldmobile torque specs, the correct torque for rocker arm bolts is 25 ft-lbs.
How do you set distubitor timing on Pontiac 455?
How do you set distubitor timing on pontiac 455?
What are the specs on a Pontiac 455?
Horsepower and torque specs varied greatly depending on the year of production, highest per year were: 1970 455 =360-370hp@4600, 500lbft@2900 (hp depending on chassis engine was installed in, GTO got the lower hp rating) (only year of high compression 455, standard D port cylinder heads) 1971 455ho=335hp@4800rpm, 480lbft@3200(Round port heads, first year of low compression, massive torque, great street engine) 1972 455ho=300hp@4000rpm 415lbft@3200 (Round port heads, new sae net rating system, slight cylinder head change, nearly same engine as 1971) 1973-1974 455sd=290hp@4000rpm, 390lbft@3600rpm (Round port heads, under rated the strongest 455 Pontiac ever produced) 1975-1976 455=200hp@3500rpm (smog motor low performance) There were several other lower performance 455 Pontiacs produced during the engines 1970-1976 run. Those listed above are the highest performance available each year. Engine parameters for all 455 Pontiacs: bore-4.15 stroke-4.21 Main bearing size-3.25 rod bearing size-2.25 connecting rod legnth-6.625
Is Pontiac 455 heads exchangeable with Oldsmobile 455?
No, they are completely different.
Is a Oldsmobile 455 the same as a Pontiac?
No, they are not the same engine. The Oldsmobile 455 had a bore and stroke of: 4.126 X 4.25 The Pontiac 455 had a bore and stroke of: 4.152 X 4.21
Will Pontiac 455 bolt in 1977 grand prix?
Sure it will. Pontiac used the same block for all of it's 326 to 455 engines.
What is the firing order for a 76 Pontiac trans am 455 engine?
Answer Anonymously What is the diagram and firing order for a 76 Pontiac trans am 455 engine?
Can you replace a Buick 455 with a Pontiac 455?
Same block, should fir right in
How much horsepower does a 455 in a1987 Pontiac trans am put out?
The 1987 Trans Am didn't have a 455
What the difference between 455 Pontiac heads and 400 Pontiac heads?
The primary difference between 455 Pontiac heads and 400 Pontiac heads lies in their design and specifications, which affect performance and compatibility. The 455 heads typically have larger combustion chambers, allowing for higher displacement and more airflow, which can enhance power output. In contrast, 400 heads generally have smaller chambers and different port configurations, which can influence compression ratios and torque characteristics. Additionally, the valve sizes and flow capabilities may vary, making them suitable for different performance builds.
What is the fastest production Pontiac engines?
455 SD
