11:1 is fine with iron heads.. Ive done 12.4:1 on pump with dialing the timing back..
I wouldnt worry about it though one bit. Also if you really wanted to you could add some 100, no need for 110. Run like 32-34* timing and youre good IMO
__________________
5.3L LSx, Fbody .500 cam, TH400, 4500 Stall, Moser 9"
|