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. It was rated at 185 horsepower and 320 foot pounds of torque. 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.

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Engine codes production figures.

Trans am engine. Pontiac offered three engines in the 1977 trans am special edition. 1971 trans am 455 h o. The 403 is an interesting engine technically a small block olds based on deck height. In 1970 with the move to the second generation f body platform the trans am had begun to build an identity for itself and the following year pontiac decided to counteract corporate rules on engine compression ratios by fitting the trans am with a massive 455 ci v8.

This engine was primarily used in california and other high altitude locations. V 8 rpo l80 which had already seen use in california bound trans ams and some formulas since the 1977 model year. 1971 pontiac firebird trans am the pontiac 455 cu in 7 5 l engine first became available in the second generation firebird in 1971. Trans am specialties of florida llc phone.

It was a very oversquare engine lightweight for it s displacement. 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. In base configuration the 79 trans am came with an oldsmobile sourced 403 cu in.

The ho engine also included ram air iv. Here in california just about all the trans am s and formula 400 s had olds 403 power from 77 on. 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. It was only available with an automatic.