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LS short box · 11-27-2020, 10:14 PM

As I said above screw in the piston stop and turn the engine over with a wrench until #1 piston hits the piston stop. Pull all the plugs so you easily turn the engine over. Should of said that before. Mark the balancer. Then rotate the engine in the opposite direction until it comes up against piston stop. Again mark the balancer. Top dead center will be half way between the two marks.
A piston stop is typically used to degree in a cam.
Another thought. OP said he knows he has spark because his timing light flashes when he cranks it. Doesn't mean its good spark. A properly working HEI should create a really nice blue spark that will easily jump 1/4" to ground. Back in the day we had a Sun machine and a HEI would put out 40,000 volts to the plug. Just a thought.

11-27-2020, 10:14 PM	#33
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 1,922	Re: 86 Scottsdale - No start As I said above screw in the piston stop and turn the engine over with a wrench until #1 piston hits the piston stop. Pull all the plugs so you easily turn the engine over. Should of said that before. Mark the balancer. Then rotate the engine in the opposite direction until it comes up against piston stop. Again mark the balancer. Top dead center will be half way between the two marks. A piston stop is typically used to degree in a cam. Another thought. OP said he knows he has spark because his timing light flashes when he cranks it. Doesn't mean its good spark. A properly working HEI should create a really nice blue spark that will easily jump 1/4" to ground. Back in the day we had a Sun machine and a HEI would put out 40,000 volts to the plug. Just a thought.