Clyde, try hooking up the vacuum advance to ported vacuum. What's your timing set at? I would also try to find out why those 2 cylinders were low. The other guys have some good advice. Just a thought. John
'68 C-10 - 250 with Edelbrock 600cfm 4 barrel, Offy intake, Hedman headers and true duals, HEI, MSD 6A box, relocated gas tank
Soon to have: T-5 tranny
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