What kind of engine does a Pontiac 455 have?
What kind of engine does a Pontiac 455 have?
Development. The Pontiac 455 V-8 was actually a bored out 428-cubic-inch V-8 with a bore and stroke of 4 inches by 4 inches. For the 455, Pontiac expanded the cylinder bore to 4.152 inches and the stroke to 4.21 inches. The 455 powered the Pontiac GTO and Firebird.
What was the bore of a 1970 Pontiac 455?
Development The Pontiac 455 V-8 was actually a bored out 428-cubic-inch V-8 with a bore and stroke of 4 inches by 4 inches. For the 455, Pontiac expanded the cylinder bore to 4.152 inches and the stroke to 4.21 inches. The 1970 to 1971 Pontiac 455 generated 325 and 455 foot-pounds of torque.
Why was there a turbo in the 1970 455?
One reason that 4 valve/cylinder heads and superchargers suddenly came to prominence. When the cost of the heated oxygen sensors became more reasonable or “coverable” by engine option costs, the turbos reappeared. These were just my own experiences. No more, no less. Perhaps others might have had different experiences? Back to the 1970 455.
What kind of oil pump does a Pontiac have?
The Pontiac oil pump is relatively simple. Its cast body houses two spur gears that draw in, pressurize, and disperse oil throughout the engine. A ball-type pressure-relief valve regulates oil pressure to 40-, 60-, or 80-psi depending on the unit and engine build conditions.
Which is the best race oil for a Pontiac?
Many professional engine builders consider Penn Grade race oil from Brad Penn among the very best available today for highperformance use. It’s a partial synthetic that contains high levels of desirable additives and offers excellent protection at all performance levels. It’s ideal if your Pontiac is equipped with a fl at-tappet cam.
What kind of oil pressure does a Pontiac V-8 use?
That’s because the bearing clearances in most modern Pontiac builds are a bit looser than what Pontiac originally specified for production engines. Generally speaking, 15W-50 and 20W-50 provide sufficient oil pressure and protection.
What does an oil filter do on a Pontiac V-8?
An oil filter is designed to remove and collect small particles and debris that’s suspended in oil as it circulates throughout the engine. AC provided Pontiac with its oil filters for its V-8s. It’s a high-quality design that’s rather large and offered excellent filtration and flow.
