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I do not have a specific hp/tq or et in mind, just want more than what I already have and don't want to pull the motor for another 20+ years. That being said, I would guess that I'm currently around 325hp and expect to get to 450hp and similar tq with the 408 and Al heads. I spoke briefly...

This is my first time on this forum so my apologies for any noobie mistakes in advance. I am currently restoring my 1971 Mach1 351c 4v with c-6 that I have owned for the last 23yrs. I had the motor built in 1989 0.30 over with go fast goodies of the day. Intake, headers, ss valves and...