I need help building a motor for my convt 92 rx-7.
So far, I want to use a 6.0 iron block and put in a new crank, out to about 427cu in. A good cam and some ported lq9 heads? how many horses should i expect. Lq9 base motor with polished heads and a bigger cam basically?

 

I have friend building a 93 rx-7 with an ls1, and it so happen's I have another frind with a forged 427 LS1. I heard his 427 is cranking out around 575hp at the fly wheel.