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Re: how rare is a 76 gmc high sierra with a 454 1/2 ton
its stayed there pretty well, I bet its broken! Dad rebuild the carb, new vac advance, and put new plugs in it, the gaps were set mostly at 20, one was set at 25 and one was set just under 15! So they are corrected, still has an ever so slight miss. Gonna swap plug wires tomorrow and see if that fixes it. Im hoping it doesnt have a flat cam.
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Ill put it this way, ive got a few lawn ornaments  
My name tag says Ryan
KansasTwister On other forums
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