had a 548 14.8 to1 lunati cam 748 748 on 108 lsa i think it was a round 279 at .050 1150 9377 holley on a re work team g intake with 990 heads that i re work put 2.250 intakes valves. 2.1/4 headers to 4inch ex with a x cross i drived this on the street in my gto IT ran very good .that engine had to make 750to800 hp easy