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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 78GMC1/2TON4x4, May 26, 2003.
Timing for a 78 350 /forums/images/graemlins/truck.gif
8 degrees btc with vac line to the distributor disconnected, 700 or so RPM warm engine.
It's on a sticker on the core suport.
thanks alot /forums/images/graemlins/truck.gif
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