JET and power valve sizes 650 double pumper

[dustoff440]

Due to the hood not fitting with the thermoquad adapter filter set up I Will be going with a 650 double pumper for now and need jet and power valve recommendations. Please don't tell me I need a bigger carb. this is all I have right now.

360 mag stock with a 500 cam and 286 duration should idle with at least 10 hg
air gap knock off
stock magnum heads
bone stock 650 dp holley
3.91 sure grip on 24 inch tires
3000 converter
MSD with dialed in MP DIzzy
Stock 340 exhaust with sidepipes

 

[crazy 340]

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

 

[Snake]

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

Sorry you divide the reading in half so if vacuum is 10 you need a 5.5.