Tired of DIY!

KnuckleDuster said
The Proform 750 street carb is definitely whistling at the throttle shaft, but the idle is holding pretty steady, regardless.
I also have a Holley 750 vacuum secondary with the same problem. Would like to fix both at the same time.
Throttle shaft ribbons are what I need? Or some other bushing?
Any chance it's the same part for both carbs?
I am still doing coffee and breakfast, will look and get more info...
Click to expand...
The shafts look identical, with the shallow recesses in the shafts on either side. If by 'ribbons' you mean the thin teflon strips that serve as bushings on either side of the shafts, that is the part. Hopefully that will tighten things up, controlling any air leaks has a big effect on being able to make effective adjustments to the off-idle settings.

Glad to hear things are progresssing... keep at it!