Trans Am Engine

The ws6 package cranked that up to 320 hp and 345 lb ft and in 2001 both versions got a 5 hp and torque bump thanks to a new camshaft and the ls6 intake from the z06 corvette.

Trans am engine. 1971 pontiac firebird trans am the pontiac 455 cu in 7 5 l engine first became available in the second generation firebird in 1971. It was only available with an automatic. The 455 engine was available in the l75 325 hp 242 kw version and the ls5 335 hp ho version which was the standard and only engine option for the trans am. Find here some figures that i found over the years taken from different sources i found they are pretty accurate.

First up was the l80 oldsmobile 403 v8. This engine was primarily used in california and other high altitude locations. 1971 trans am 455 h o. Engine codes production figures.

Pontiac offered three engines in the 1977 trans am special edition. It was a very oversquare engine lightweight for it s displacement. The ho engine also included ram air iv. V 8 rpo l80 which had already seen use in california bound trans ams and some formulas since the 1977 model year.

It was rated at 185 horsepower and 320 foot pounds of torque. In base configuration the 79 trans am came with an oldsmobile sourced 403 cu in. By 1998 the ls1 was under the hood of every trans am and formula rated 305 hp at 5200 rpm and 335 lb ft of torque at 4400 rpm. The 403 is an interesting engine technically a small block olds based on deck height.