General Category > Quadrajet Carb Talk and Tips

Dyno'd a 7043240, 586 hp and 603 ft lb

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Cliff Ruggles:
The larger castings actually flow "850" cfm, not "800".  With the booster rings removed they are 897cfm with the rear air flaps set to 1.240-1.250"........

70GS455:

--- Quote from: Cliff Ruggles on November 25, 2020, 04:00:42 AM ---The larger castings actually flow "850" cfm, not "800".  With the booster rings removed they are 897cfm with the rear air flaps set to 1.240-1.250"........

--- End quote ---

How much would removing the outer booster affect drivability ? How much would setting change?

lightning boy:
Just curious, was this with a dual plane intake or single?

70GS455:

--- Quote from: lightning boy on November 30, 2020, 01:49:45 PM ---Just curious, was this with a dual plane intake or single?

--- End quote ---

Dual plane, Edelbrock B4B (similar to Performer) port matched

Cliff Ruggles:
You will loose some efficiency removing the outer booster rings as it effects sensitively to the jets and atomization of fuel.

Even so when calibrated correctly single booster models work fine for street use and excellent drivability, just expect a little more throttle angle to be required and a little more fuel consumption for "normal" driving.......Cliff

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