Whoof! Check this out. I went out to recheck timing with a degree-able timing light this afternoon and couldn't find the mark. (Been working with octane and timing to get rid of a slight rattle.) I used a white crayon to mark it, then orange, then sharpies but still couldn't see the darned thing in daylight. "Hmm. I'll just wait til tonight." I finally found it tonight... somewhere around 80 degrees off! (This measured in cam degrees, so, almost the far side of the balancer.) Since I totally screwed timing in the day, I eventually tried timing from the #2 cylinder (yeah, I know that's not how you do it but it was almost right on #2:( It runs really smooth now but motor pings like a can-o-bearings upon anything more aggressive than smooth throttle (goose it, get on it, etc.) It's a Chevy 5.7L V8 with TPI and, yes, I disconnected the bypass. I put the engine together right, numbered all the wires, installed the HEI distributor in the correct position, put in a new timing chain, etc. So, anybody had this? I don't think the timing chain jumped since it's new and slackless. There's no slop in the ignition, apparently, since the timing light shows the timing mark's rock-solid steady. Harmonic balancer outer ring slipped? Ideas anyone? Troubleshooting tips? How many things could it be?! Drink P.S. Next time, I'll confirm timing mark position upon assembly and make a hashmark between the inner/outer ring on the balancer. '76 CJ-7 '87 Chevy 5.7L V-8, TPI NV4500, Dana300
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18 years ago