The 1970 Rallye 350 and W-31 both consisted of 2 1/4″ head pipes and 2″ tail pipes. ┬áThe Rallye 350 used tail pipes with welded on chrome trumpets like a 442 and the W-31 had turn downs that ended at the bumper. Our reproduction exhaust system for these cars comes with the correct head pipes, . correct flanges, tail pipes with correct welded on trumpets, correct mufflers, installation instructions, diagrams, sealant, clamps and correct front hangers. Our reproduction tail pipe hangers are available. as well as a cap flange for the passenger manifold. Ask about our concourse show package those of us when original is not good enough.

1970 Rallye 350 Exhaust Kit

1970 W-31 Oldsmobile Exhaust Kit


Ask about our turbo mufflers for a little extra roar!