General Category > Quadrajet Carb Talk and Tips

Lean on transition

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Cliff Ruggles:
What size are the main airbleeds?

Float level?

Fuel pressure?

Fuel inlet seat diameter?.......Cliff

77cruiser:

What size are the main airbleeds?  .086

Float level? 5/16

Fuel pressure? 6

Fuel inlet seat diameter? .13

Cliff Ruggles:
That all looks good, what metering rod on the primary side?

Do you have a PP spring in place for the low vacuum at idle?.....Cliff

77cruiser:
50M rod
Yes the spring is in, haven't checked when it comes in though. Pretty sure I have the stock spring.

Cliff Ruggles:
That cam requires a low tension PP spring.

72 jets are lean for that carb with 50M metering rods.  We run larger jets in those for engines set up like yours.....Cliff

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