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What are the Timing Specs for a 1991 Chevy Truck with a 350 engine?

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February 24, 2010 10:22PM

The underhood label on mine says 0 degrees for both manual and auto trans. I just set mine to 0, but it doesn't seem to be running right. I've heard there's a timing wire that needs to be unplugged before checking the timing. If anyone knows what that is, it would help us both out.

If your motor has the hei with the external coil, you remove the four pin connector on the dist. leave the other one connected. This shuts off the est and you should be able to time the motor.