Q: Dual Port Advance for 1968
My 1968 is missing the dual port advance. Is this part necessary?
A: The purpose for the dual port advance was for early emissons and with the redesign of the 1968 heads that are supposed to sacvange the fuel and air to burn cleaner.
A: Dual port advance mechanism was actually a retard and advance unit in one can. Tech bulletin I have states that some owners complained of popping in the exhaust due to the retard. Most dealers disconnected the retard and sent the customer on their merry way
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Content last modified: January 15, 2014 at 1:39 pm