Originally Posted by bowhay
duration at .50in lift is 219 int. and 227 exh.
lift is 489 491
vortec heads
flat tops 11.1 to 1 comp
th 350 trans
dual plane air gap
750 holley
hope thats enough
its 1983 longbed single cab to.
but put around a 3200 stall on it bowhay