Re: 305 surging at Highway speed only
My thoughts would be:
Vacuum leak
Vacuum advance
Fuel pump
Do you hear any hissing sounds that sound like they aren't normal? When it surges, does it crack, pop and backfire any at all?
__________________
Chad
1967 C10 SWB - Project Savannah - 6.0/4L80 *Currently underway*
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