Trans Am Ws6 Engine
5 7 liter ls1 v8.
Trans am ws6 engine. 6 speed manual transmission. The ws6 mods boost horsepower and torque peaks to 320 and 345 respectively up from the stock trans am s 305 and 320 figures. In 2002 the ws6 trans am rolled off production lines with 325 horsepower achieving 0 60 in under five seconds. 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.
Drivetrain chassis the firebird trans am was powered by gm s 5 7 liter ls1 v 8. 2000 trans am ws6 44 992 miles 5 7l sfi v8 4 speed automatic transmission rear end is. The firebird ws6 was powered by the 5 7 liter ls1 v 8 engine. This pushrod engine had a 16 valve design with a 3 90 inch bore a 3 62 inch stroke and a compression ratio of 10 1 to 1.
The 2002 model year ws6 trans am produced 325 hp 242 kw at 5 200 rpm and 350 lb ft 475 n m of torque at 4 000 rpm out of its 5 7 liter ls1 v8 engine. Trans ams came equipped with a standard 403 cu in rated for 185hp but it was the more powerful pontiac built 220hp 400 option mandating a four speed manual that garnered attention. But depending on an owner s budget this car is fully capable of producing over 500 horsepower and 600 lb ft. Throw in the required ws6 suspension four wheel disc brake package and together they still added less than 1 000 to the 6 699 base msrp.
The ws6 package added a functional ram air hood scoop that helped direct cool air into the engine along with a freer flowing exhaust system. A completely stock ws6 completed the mile in 13 16 seconds at 106 05 mph on eagle f1 street tires. Output for the ws6 s engine was rated at 325 horsepower at 5 200 rpm and 350 foot pounds of torque at 4 000 rpm. 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.