I believe you are referring to spark timing? Jus t have them set the engine to TDC on #1 piston. Line up the dist oil drive and stab dist. Get it running and set timing to 10-12 with no vac hooked up. With vac, I like to see around 20 degrees. Each engine is different. Depends on cam , carburation and timing.

Be sure to run breakin oil and bring it upto 2K rpm for 20 minutes. This is for the cam. Keep a fan nearby to help cool the engine. Tom

Inliner Member 1716
65 Chevelle Wagon and 41 Hudson Pickup
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