i have an 87 iroc with a 305 tpi and i am currently building a twin turbo 350 , i'm following callaways c4 vette specs but i'm trying to build alittle better. i'm gonna run iron heads instead of aluminum though and i know i need to end up with 7.5:1 compression and around 80cc combustion chambers on the heads but i can't find cam duration or crank and piston specs but i did hear they used lt1 connecting rods ,i also got a truck block 350 like they said and had it turned from a 2 bolt to a 4 bolt splayed . if anyone can help it would be greatly appreciated. just to give you an idea of what i'm doing i'm taking an iroc camaro and making it look like gm cared as much about it as they did the corvette back then so i want it to look like a factory car just with all the trimmings not so much a sleeper more like a tribute to all third gen cars that i think are the best cars ever made

 

be sure to post pics

 

Ah I think you could up the compression to like 8.5 even though your running iron heads.