I got a few 4 bot main 350's and am building one for my rat rod. I am looking at cams. I will tear the motor apart an have it machined but was wondering about the heads. They are 881's. I read the specs and basically the same as 882's with a larger valve. 2.02 and 1.60. 76cc chambers. I want a nasty cam and lots of lope. I have built a few sbc's but I want this to be the nastiest. The one on my nova had a 292 mega grind isky cam but had built 461 heads.(hardened seats and new springs with a 3 angle valve job) I was wondering what I could do with these heads. I am open to having them milled down and changing the springs, but not much more than that. basically what kind of cam will max these heads out with out causing drivability issues, Its a 3 spd manual, and sill have 3.73 gears.