Making Power 318

dylantman8 said
Yes, It has dual exhaust. My guess is one and a half or 2 inch pipes using stock exhaust manifolds with an h pipe. Also, do you have any advice from a compression test? I cant get the tester securly on the plug holes with the exhaust manifold and angles.

Are you using a compression tester that just pushes on to the plug hole?

I’ve always hated those things. Use one that threads in to the plug hole.

All the parts houses have em for rent for cheap.