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1998 GMC Truck Distributor timing adjustment

Tiny
HVFD7014
  • MEMBER
  • 1998 GMC TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 158,000 MILES
I just put a new motor in this truck, with a RV Cam. Runs, but timing is off. My mechanic friend is having trouble getting it right on timing. Exactly how do you set the timing on a 1998 GMC 2500 4X4 Vortect 350?
Saturday, June 6th, 2009 AT 1:01 PM

1 Reply

Tiny
MICKEY-D
  • MECHANIC
  • 304 POSTS
You need to get the specs for that specific engine. You can't just assume you can time it the same as the stock engine. Cam timing could be different, and that can affect the ignition timing. You may have to use a light and do total timing at say 3500 or 4000 RPMs.
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Friday, January 1st, 2010 AT 12:17 AM

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