- Joined
- Feb 11, 2014
- Messages
- 37
- Reaction score
- 0
- Location
- La Habra Heights, CA
- My Car
- 72 Mach 1
79 Ranchero
79 Corvette
I just found and bought a 1970 351C 4V engine with a C6 trans 3000 stall converter. I didn't have a camera with me and the engine was back in a corner where I couldn't get to see the numbers or dimples on the heads. He said they’re open chamber heads and the rebuild was done stock with a 30 over bore. It has factory type exhaust manifolds and less then 20K on the rebuild.
I don't really understand how the bounce back stuff works on the 4V heads and my question is.... If these are open chamber heads, is it better to stay with factory exhaust headers or go with aftermarket headers? I had always thought aftermarket headers let the engine breath better and gained HP but after reading an article "The Amazing 351C 4V" I was left confused. Help me out here:huh:
I don't really understand how the bounce back stuff works on the 4V heads and my question is.... If these are open chamber heads, is it better to stay with factory exhaust headers or go with aftermarket headers? I had always thought aftermarket headers let the engine breath better and gained HP but after reading an article "The Amazing 351C 4V" I was left confused. Help me out here:huh: