Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor
Rich 10:1 on primary circuit
Shark Racer:
Is this a single main air bleed carb or dual?
1983zsled:
it is a single main air bleed like this......
Shark Racer:
That makes sense! Yep, you should be running M rods with those. The main air bleeds are quite large too, but that would be making you lean.
I didn't make the connection that "main air bleeds" in your post meant a single pair, I assumed you had the uppers and lowers sized to 086. I should have gathered it from you calling out the upper and lower idle air.
I'd stay with the 70 jets. You may find you even need to go up a bit once you switch to the M rod.
1983zsled:
OK that is what Cliff had mentioned to try a 52M or even a 50M to get it right.....
I asked Cliff to send me some but he is out right now.
I used to have some M rods but I turned then on a mini lathe to make a tapered .044 to .040 with a small .026 power tip for another carb......
If I can find those rods do you think it will be close.....?
Shark Racer:
No. The M rods have an 036 tip, so at WOT you'll have a different mixture.
Basic thing to remember for tuning WOT is that the jet size, rod tip size, secondary rod size, float level and engine "suck" determine how much fuel the engine will get.
M rods are 036 tip, the rest 026. That 010 difference will have a significant effect on WOT fueling.
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