and new engine features included a new timing-chain tensioner, sound-deadening valve covers, and a revised intake manifold. The Series I 3800 V6 was also supercharged, and produced up to 225 ...
Horsepower is 240, up from 215 with the GTP's 1996 engine, a 3.4-liter DOHC V-6. Pontiac claimed 300 horsepower from the supercharged 3800 in the 300GPX show car (C/D, April 1995), but we knew ...