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Dead Parrot · 12-15-2020, 09:42 PM

I think there have been 2 or 3 variations of SBC timing mark placements on the timing cover. Possible the one on your motor doesn't match how the balancer/cam was installed.

IMO - Step 1 is verify TDC for #1 matches the balancer mark vs the indicator.

I know you said the balancer ring hasn't shifted but might put a mark that goes from the outer ring, across the rubber and to the inner ring. Any movement will show up fairly quickly.

It really sounds like the engine is in good shape and what you have is a timing indicator problem. With the current setup, go to 45 or 50 indicated on the initial timing. If it runs and sounds even better, pretty much a confirmation of an indicator issue and not an internal problem.

12-15-2020, 09:42 PM	#4
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,495	Re: Engine Timing Help I think there have been 2 or 3 variations of SBC timing mark placements on the timing cover. Possible the one on your motor doesn't match how the balancer/cam was installed. IMO - Step 1 is verify TDC for #1 matches the balancer mark vs the indicator. I know you said the balancer ring hasn't shifted but might put a mark that goes from the outer ring, across the rubber and to the inner ring. Any movement will show up fairly quickly. It really sounds like the engine is in good shape and what you have is a timing indicator problem. With the current setup, go to 45 or 50 indicated on the initial timing. If it runs and sounds even better, pretty much a confirmation of an indicator issue and not an internal problem.