My last trip to BIR i saw what i thought was impossible. A fellow racer i have talked to a few times ran numbers i thought were impossible. His combo; 2500 lb race wieght Cuda. 540 with max ported SR heads, pg trans. Q16 fuel. HE RAN 8.37! I pitted next to him so i had a good look at the car. Obviously this was an all out build of sorts, not your joe average bracket motor. But still, 8.37? Impressive!!
The Wallace calculater says 842 hp on that run with over 2200 DA. Granted, the heads were opened up to max wedge size, but still use rockers for the SR heads so it gives you an idea of what can be done. He said he shifted at 7400!