1971 360 question

Wicked4659 said

1/2 the vacuum on a PV is the standard. Even Holley states that on their videos and tech support. I had a 6.5 PV in it originally and it would bog off the line, now it doesn't. The only issue now is the idle. There is a big difference in the idle between P or N and in drive.




Hmmmmm, didn't check that, but when I mash the gas peddle, it launches.

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I would disconnect your gas peddle linkage and check if you are able to drop the idle down A body throttle cable doesn't have enough travel in the peddle I perches a secondary linkage to get full throttle part number 20-122 and a throttle lever extension modal number 4014412 to also get more travel if i didn't get these 2 things i would lot have full travel in my carb im just thinking your cable is too tight and keeping your throttle open a little bit and the RPM drop is because of the trany load RPM should be able to set as low enough to stall out the engine