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Old 09-17-2019, 11:33 PM   #10
Junior Member
Join Date: Jul 2014
Posts: 15
Default Re: 292 y-block distributor puzzler

I have tried the "mouth suction" test on the NOS unit and it seems to respond properly. Even if it didn't, I can't see how the timing retards. Let me retest tomorrow to confirm the facts as I have stated them. I am pretty clear that revving the engine did NOT result in timing advance. This is apparently the result of the design --- there is no centrifugal advance, just that weird little valve mounted on the Holley 4000.
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