I had a friend when i lived in PHX, in the late 80's that had a 292" Nickens and Brown motor in a Gen 3 X prostock car that would run 8.80's @ 162MPH, with a Lenco. But he came out of the hole peddle to the metal about 10,500 RPM's, it was an amazing car but it killed valve spring after about 50 passes. I have vids of the car if anyone would be intrested.
Zip.