Ok here is what I started with: 18 Wriedt Stinger fairly heavy boat.
455 olds, mild cam, logs with thru hull 700 Dbl Pump.
Berkeley JC with "A" impeller and jetovator.
With this combo I turned 4900 rpm, and managed to squeeze 60 mph.
I put together a BBC 454 with a Doug Herbert HERCLB3N 275/285 advertised, .500/.530 lift, 112c
stock flat top pistons, 8.5-1
049 heads Air Gap intake, and logs, same 700 dbl pump
With this combo I turned 5000 rpm, and got 60 mph!!
I put on a set of headers today, hoping to gain a little, didnt change a thing.
Is this all its going to do? I have a 750 vac holley I can try. Anything else Im missing?