I have a 66 389 block that I am planning to bore out to 400 std. It is a 2 bolt block and I am trying to get a handle on how much HP to try to get out of this 2 bolt.
I am not going for the ultimate hot rod, just a good street machine. I will put forged crank and rods in the block. Looking for 400 - 425hp?
Anybody got experience with this.
Ray Overstreet
Austin, Texas