What size jets should I run in a holley 650 double pumper with a proform main body??
05-05-2004, 04:09 PM
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Car: Junk
Engine: Junk with nitrous
Transmission: Junk with gears
What size jets should I run in a holley 650 double pumper with a proform main body??
I have a holley 650 double pumper that I put a proform main body kit on. According to the box the main body came in, it flows the same as a 870 holley carb. So what jet size approx. should I be experimenting with??? Right now I'm running 75's in front and 82s in back, doesn't seem to run all the good.....having a tough time tuning the car be "reading" the plugs. they are always dark colored no matter what jets I have in the car.
05-05-2004, 04:11 PM
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Car: Junk
Engine: Junk with nitrous
Transmission: Junk with gears
here's some motor details:
Canfield 200 heads
Lunati solid lifter cam, .525/.545 lift, 106 lsa, 249/259 duration @.050
1.5 comp roller rockers
355 short block
Super Victor intake
hooker super comp headers
true dual 3inch x pipe exhaust
Oh, and I'm at 3,200 elevation.
Canfield 200 heads
Lunati solid lifter cam, .525/.545 lift, 106 lsa, 249/259 duration @.050
1.5 comp roller rockers
355 short block
Super Victor intake
hooker super comp headers
true dual 3inch x pipe exhaust
Oh, and I'm at 3,200 elevation.
05-05-2004, 05:26 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The main body came with 74/84 jets, correct? Did you try that?
The altitude would dictate 1 to 2 jet sizes down, typically. But, that varies with conditions.
What PV are you using? Have you checked cruising vacuum?
The altitude would dictate 1 to 2 jet sizes down, typically. But, that varies with conditions.
What PV are you using? Have you checked cruising vacuum?
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