Cliff's Quadrajet Parts and Rebuild Kits

General Category => Quadrajet Carb Talk and Tips => Topic started by: DoubleDingo on April 15, 2020, 08:50:58 AM

Title: A quick, hopefully easy question
Post by: DoubleDingo on April 15, 2020, 08:50:58 AM

I asked Cliff about a carb I have that I want to use for my 292.  I sent the pictures, and provided current jet and primary rod sizes, and he said it's a large MAB unit.  Does MAB = Main Air Bleed?  I didn't want to bug him with this question as he is busy enough already.

Thanks

Shane

Title: Re: A quick, hopefully easy question
Post by: mcx on April 15, 2020, 09:37:53 AM

Yes,  MAB refers to Main Air Bleed...some carbs are single MAB, others are dual MAB.

Title: Re: A quick, hopefully easy question
Post by: DoubleDingo on April 15, 2020, 09:55:08 AM

Cool, thanks.  So would a large MAB carb be a single?  And a dual MAB have smaller air bleeds?

Title: Re: A quick, hopefully easy question
Post by: Kenth on April 15, 2020, 11:49:21 AM

1970 and later Chevy passenger car Qjets uses the large .120" upper in airhorn and lower in bowl MAB`s.
1969 and older Chevy Qjets uses the smaller .050" upper and lower MAB