JET and power valve sizes 650 double pumper

whats in it for the moment

72 up front

78 on the rear

and if the vaccum is really at 10 psi idle in gear
you will need a 8. power valve

but like I said idle in gears read the vacuum gage
and what ever you ends up to minus 2 like

8.5 - 2 = 6.5 power valve