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Re: Timing Procedure '97 Chevy Astro 4.3L Vortec
Posted to Technical Discussion Forum on 5/11/2003 3 Replies

Heavy, the only way to accurately set these is to use a scanner and look at Cam Retard pid.

What you do is start it up, snap the throttle to get the cam retard to update, the adjust, snap the throttle, adjust, etc.

Set it to 0 degrees.

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