CONVERSION TO V8
Converting from a 6-cylinder to a V8 (289, 302, 351W)?
You will need the parts displayed on this page. This is not an exhaustive list, just basic necessities.
Engine, transmission conversion and appropriate parts depend on whether you choose an automatic or a manual transmission. The 6-cylinder transmission is not strong enough to handle the power of the V8. It is also too short to hook up to a properly mounted V8. A sure sign of a bad V8 (289, 302 or 351) conversion is when the firewall has been cut into, to make clearance for the engine. This usually means the engine is hooked to a 6-cylinder transmission and the engine mounts are in the wrong place.