[rico_bob]

Hello,

We are trying to help a fellow "truck-nut" of ours who has a 1957 GMC Pickup truck with a 347 cubic inch V-8 Pontiac. He is looking for a way to run dual exhaust on this truck. The starter is located on the driver's side, and he wants to eliminate the front exiting manifold and front crossover pipe.

Was there an OE driver's side exhaust manifold on any Pontiac engine that would solve this garage engineering project? I have read that many of the heads are interchangeable, what combination would be available to this fellow?

Any help is much appreciated!

newbee rico

[Jack Gifford]

Welcome to these forums, and cheers to the GMC owner! I've got a '59, but it's had a later Pontiac swapped into it.
Tell your friend that basically all Pontiac exhaust manifolds interchange (other than high-performance round-port stuff). There are many passenger car manifolds that would work for him, he just needs to look around at some Pontiac engines. I believe the '72 350 in my truck has its original manifolds, and they work real nice for duals, and clear the steering box and everything good. However, my '72 engine has the block-mounted starter, so I can't guarantee the driver's side would work with his bellhousing-mount starter (although it appears it would be okay).