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Wot throttle misfire is a classic, the distributor is a few teeth off symptom.Advance comes in and spark jumps the wrong cap terminal. Not an expert on scanners so not sure what if any assembly errors would show up through that method. A timing light won't tell you the distributor is out of phase either. If you're not 100% certain on the install might pay to revisit the dizz install. No amount of turning the the distributor back and forth in an effort to set timing is going to correct a phasing issue.Has anyone had an experience like this before?
My distributor was definitely rotated out a tooth. Just finished reinstalling in correct location and set timing to zero. Seems to be in a much better location (wires facing the back instead of aimed at driver side) However, the WOT misfire persists. Plugged in my timing light with the tan wire plugged in and my timing was jumping all over the place at idle. From 9-12 degrees. I just ordered a new pickup stator. I heard that can help.Wot throttle misfire is a classic, the distributor is a few teeth off symptom.
Verify spark power with a spark-tester calibrated for HEI.
Maybe the coil is weak, and when voltage demand increases with load, the coil shorts-out.
Not a good pic. Also, it's probably on a custom bracket. It's been a while.@Erik the Awful do you have a picture of how you mounted the coil on your carb intake? Oem coil mount doesn’t line up with the bolt holes on my intake. Thanks!!