The guy I bouht the donor truck from was running the 1050 dominator on a tunnel ram on a 377sbc, truck always ran great and I think he was turning somewhere between 8000-8500. Anyway I think the 427sb should be able to handle the dominator sitting on top of a super victor. Oh let me ask on the bowtie block should I run the recommended .300 taller lifters or machine down the bosses and run the standard ones?