Holley HP system with Ford TFI- timing synchronization

[Ed Wright]

Originally Posted by Sean Cour

Brad, I ran into the same thing with our super stock cars. I tried our new Snap On light, and had the same issues. Went to our old Sears light of 35 years, and the timing was spot on.

Same experience I had. New SnapOn light was a piece of crap. Old Sears light turned out to just need new battery leads. Everything that came in for a tune up showed timing to be off 6. Fixed the old light, all that went away. Snap On guy didn't want it back.