What is the advance timing for a 1988 GMC Sierra SLE? It is a V-8 with the 5.7 L.

Asked by khuff Aug 22, 2014 at 09:02 PM about the 1988 GMC Sierra 1500 K1500 Standard Cab SB 4WD

Question type: Maintenance & Repair

Just bought the truck and am trying to tune it up.  Just need to know what the advance timing is supposed to be.

1 Answer
70

Jcoutlaw86 answered 6 years ago

Since when was an 88 350 computer controlled timing. There's no vaccum advance or plug in of any kind on my distributor but on that year with no 1 on TDC the 0 on the timing mark indicator is the right position. But be careful. When replacing the distributor the spiral gear will through you off a couple teeth if you don't set it back a few teeth to start with

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