[Ant]

John,

There are many ways of obtaining horsepower, originally I thought you were fitting a 429 series 385 block to your car, when in fact its a Yates headed smallblock. I assume that your main purpose is racing, and there wouldn't be enough reason for Richard to modify his chassis for the different style heads when most JBL users may drive their cars on the road as well?
The Yates heads would also make it into a 4500-8000rpm engine I expect!
Fitting 5.4 quad cam GT40 type engine would require a total redesign to fit that big wide alloy blob in.

I would be interested in doing a 331 and trying to achieve 500bhp that would make a fun road and track car. The only other option (dont like 416-427 strokers) would be a 393 with good gear, that should make 550-600bhp!