OK guy's need alittle help here, I just purchased a mixed bag of engine parts that was said that was bought for one engine years ago and has been sitting in a cellar so here's what I got. Bowtie 400 block never been used, Ohio 4340 4" stroke 400 crank, 6" rod's, Ross 4.125 flat top pistons(99466)and a set of Bodix M2 Track 1 227cc heads, The person told me it was a 434 he thought but the best I can come up with is a 428 which I'm not complaining but the comp I'm not sure of because the heads are 68cc heads and I was wanting somewhere around 12.5-13.5 and I don't think these piston's will get me there. I'm trying to get 700+hp. Any help on what cam I'll be needing.