How much horsepower does a 1970 Pontiac 455 have?
360 horsepower
The result was the 1970 Pontiac GTO 455, which was stuffed with a beefy 455 HO V8 long-stroke engine. Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
How fast is a 1977 Pontiac Firebird?
In their April 1977 issue, Car and Driver flogged the W72 Trans Am and got a 0 to 60 time of 9.3 seconds and ran the quarter mile in 16.9 seconds running 82 miles per hour. By today’s standards, that’s pretty slow.
How fast can a 1978 Firebird go?
| Top speed: | |
|---|---|
| (theor. without speed governor) | 203 km/h / 126 mph |
What was the horsepower of a 1970 Pontiac Firebird?
When a buyer upgraded to the next Firebird option, the Esprit, a 350 CID V8 was included standard that produced 255 horsepower. Next up was the Formula 400 that was, fittingly, outfitted with a 400 CID V8 rated at 265 horsepower.
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.
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.
When did the Pontiac Firebird go out of production?
Though the sales of the Firebird would rise in 1971 over 1970, sales numbers for all pony cars would generally be on the decline until 1973, which was just before the class almost was officially ended. Fortunately, the Firebird was there along with the Camaro to keep the pony car torch burning throughout the 1970s and beyond.
The 455 powered the Pontiac GTO and Firebird. The 1970 to 1971 Pontiac 455 generated 325 and 455 foot-pounds of torque. The 455 High Output generated 335 horsepower and 480 foot-pounds of torque for 1970 and 1971. However, power steadily declined beginning in 1972 when Pontiac reduced it to 300 horsepower and 415 foot-pounds of torque.
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.
What was the special version of the Pontiac Firebird called?
In 1973 and 1974, a special version of the 455, called the Super Duty 455 (SD-455), was offered. The SD-455 consisted of a strengthened cylinder block that included four-bolt main bearings and added material in various locations for improved strength.
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.