Originally Posted by F-BIRD'88
You can upgrade your carb using the Proform 750 HP body kit.
It will require some air bleed tuning, when working with a 670 as a donor.
Re: air bleed tuning The installed air cleaner has a effect. Tune with the air cleaner on.
Not all air cleaners are created equal.
I had read somewhere about this change but I think I'm gonna keep the 670 SA in storage after I clean it up, and have a back up carb that I know is in good working order