I still have it I may have to look into it again. I have read that they are great carburetors for street. Is there any source to look up the number and see what CFM etc?
The 800 = small & the 850 = big acceptance rating isn’t exactly accurate. In short, according to our departed member,
small = 737, big = 787, small race unit = 800, big race unit = 915.
From our member who has passed on;
