[mokicruz]

I ran a 67 bird with a 671 dyno'ed horse power in the 70's . The bearings never held up , I spun mains and rods several times with 3n different blocks. I have a detuned 455 in my 68 bird using the ported ramair 4 heads 1050 dominater on an edlbrock 180 degree manifold from that engine. Have the pontiacs rods and blocks improved enough to stay alive very long with 600HP.