Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

11.60, et`s but missing thru traps

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Mr.Pontiac:
 Trying to figure it out, car is awesome off line pulling wheels and gone but within 50 ft. Of traps it’s missing and acting like I have a rev. Limiter on the car. Thinking it’s a lean out condition. 105 MPH. Running 410 gears Crower 296 flat tapped cam. Gas tank dumped, fuel pressure is 7 psi going thru my run.Qjet 800 cfm running off jets, not power piston or rods..136 needle and seat, small float.I believe I have .056 jet`Or .057,s I’ll check to be 100% sure.I may be wrong but fill I should be around 110 mph.Timing is locked out and set at 36 degrees. ANY IDEA`S

Mr.Pontiac:
Pulled carb. Top off this morning, running 65 jets with a G HANGER and your custom rods.I do have L,M,P Hanger, .135 needle seat.

Mr.Pontiac:

--- Quote from: Mr.Pontiac on August 03, 2021, 08:22:50 AM --- Trying to figure it out, car is awesome off line pulling wheels and gone but within 50 ft. Of traps it’s missing and acting like I have a rev. Limiter on the car. Thinking it’s a lean out condition. 105 MPH. Running 410 gears Crower 296 flat tapped cam. Gas tank dumped, fuel pressure is 7 psi going thru my run.Qjet 800 cfm running off jets, not power piston or rods..136 needle and seat, small float.I believe I have .062jet`Or .063  I’ll check to be 100% sure.I may be wrong but fill I should be around 110 mph.Timing is locked out and set at 36 degrees. ANY IDEA`S

--- End quote ---

old cars:
No air/fuel gauge? I know some guys don't like them but maybe.

77cruiser:
How's the vent on the tank?

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