General Category > Quadrajet Carb Talk and Tips

Outer booster removal project?

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77cruiser:
Yes when I go past about 1/4 throttle. Free rev it's better but still leans out some.
Did you do something different with the air bleeds?

77cruiser:
What size jets do you end up at?

Cliff Ruggles:
I start about 5-7 numbers down from what it showed up with and work from there....

77cruiser:
Might turn into a next spring project, depending on weather.

Cliff Ruggles:
If it helps I set up a later model SMAB unit over 15 years ago for a customer who does a lot of racing with his car.  It's been so long ago that I don't remember the size of the MAB's but they were the smaller variety like is used in the Edelbrock 1910's.  The engine at that time made 735hp and the car ran 9.90's over 135mph.

I removed the outer booster rings and set it up with 71 main jets and it has been flawless now for many years.......Cliff

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