90 gmc timing spec

66Construction

Senior Member
Location
Albany NY
I need some help! I have a 90 gmc 2500 with a 5.7 v8 7200 gvw. The Label on the fan shroud is missing the part with the timing spec on it. All it says it BTC and then the rest of the label is missing. The timing got screwed up while working on the truck and now I don't know what to set it to. If anyone has the same truck or knows the spec I would be grateful if you would share the information with me. John...Dino... are you out there???
Thanks a million in advance!
Casey
 

AtlasFBG2

Member
Location
Ohio
According to the shop manual i have it just says top dead center.I have a 90 2500 hd with the 350 ill look under the hood tomarrow to make sure.
 
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