The truck is a 1997 Chevrolet K1500. Chewed up the crank. Stock replacement from Scat. While the machine shop went through it I had it bored .040 and installed flat top dual relief pistons. I also went with a mild cam upgrade (Melling MC22129). Everything else is stock. I am running ecm software for 2002 Chevrolet Express L31. I did flash update the ecm with current calibrations from Chevrolet for the 2002 Express. So far the only change I've made is to the cylinder volume. The truck almost wants to start but no dice. Please help. I've got no idea. Thanks in advance.