CarburetorsCarb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.
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Ok here is my carb its a holley street HP 750 double pumper.
My car has 10-11 inches at start up idle
12 inches at 180* operating temp idle.
20-22 inches crusing at 2500 rpm.
I believe it only has a power valve on the primary side, and right now its the stock 45. I know this is to low and im getting a pretty good bog when i go to wot. What size power valve would you guys say to step it up to?
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383ci w/ hyper pistons 10:1, Eagle cast crank, PM rods with ARP bolts, Aluminum heads with 190cc intake runners, 3 angle valve job, 2.02/1.6 valves, Edelbrock 7102 Performer RPM Camshaft & Lifters .488/.510 - 234/244 - 117, Edelbrock 7101 Intake with holley 750 DP street HP Carb, Complete MSD ignition 85551 Distributor, 6430 box, blaster coil and 8.5mm wires.
I would call Holley's tech support and let them tell you what you need as far as power valve. I would think you could go with a 65. It is usually determind 50 percent of your vacuum at idle.
