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Old 12-28-2003, 09:33 PM
DTL504 DTL504 is offline
84 Z28 Convertible
 
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Holley 650 DP Mec Sec or 750 Vac Sec

I talk to my engine builder and he thinks I should run a Holley 650 DP Mec Sec rather than my plan to use the 750 Vac Sec. He dont think that I will have enough vacuum to operate the vac sec of the Holley 750. However I think my combo is calling for the 750 Vac Sec. UDHarold said he did not have a problem with this cam running power brakes in a 406.
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