1993 GMC Sierra 1500 350 Engine!!! Timing!! - Chevrolet Forum - Chevy Enthusiasts Forums

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Old 06-15-2010, 08:24 PM
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Join Date: Oct 2009
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Default 1993 GMC Sierra 1500 350 Engine!!! Timing!!

Problem: Trying to set timing! Timing was already off. So I asked a friend to walk me through the steps and I am still having problems. Ok so first off I set the timing mark thats on the crank to the first mark on the clip that conects to the timing chain cover. So im guessing thats negative 1 degree. then I started it and steped on the gas to drive it and it starts to bog down. I parked it and I see that it advanced timing alot???? Is there a timing advancer on these trucks? Like a vacum hose or chip to pull out and set the timing then reconect it?

Last edited by Robertv34; 06-15-2010 at 08:26 PM.
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Old 06-17-2010, 06:51 PM
72c10gunn's Avatar
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Join Date: Feb 2010
Location: texas
Posts: 147

Ther is a wire you have to disconect to set the base timing, im not sure which one though, It will specify in a manual if you have one.
'72 Chevy c-10, vortec 350, perfesional products crosswind intake, edelebrock 600 carb, HEI with summit 50,000 volt coil, headers, th400, 3.73 12-bolt, soon to come comp cams xr276hr cam, 2500 stall, roller rockers, and maybe a mini spool. Hope to have ready for summer cruisin'

'02 GMC Envoy SLT loaded no mods, wifes car!
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