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Discussion Starter · #1 ·
I have a holley 650 DP and I was surprised to see that there is no power valve in the rear. Maybe they dont put one on anything smaller than the 750? Well I was planning on buying a 750cfm proform main body for it and was curious if I should put the metering block off a 750 on it also that uses a power valve in the back? Also am I going to have to change the base plate to make it a 750cfm carb along with the main body or is the base plate the same on a 650 and 750?
 

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no need for a power valve in the back as it's in GET ARRESTED MODE by the time the secondaries are open-there are times when they are used-some road race,circle track,tunnel ram have them
 
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