1998 GMC Truck Distributor timing adjustment

1998 GMC TRUCK
158,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
HVFD7014
  • MEMBER
  • 1 POST
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?
Jun 6, 2009 at 1:01 PM
Advertisement
Avatar
MICKEY-D
  • ✓ASE Certified Mechanic
  • 304 POSTS
  • ASE Certified Mechanic
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.
Jan 1, 2010 at 12:17 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.