Thanks,Jon
I printed the info and will file it in my Truck folder,I'll start looking for a different YF this summer at the swap meets I need a YF with port vac.
Jon ,is there any way to tell from the year the carb is for ,if it has port or manifold vac ,Longbox looked at a 2100s that He has and it's manifold vac,wrong for that year 235,53 to 56 should have port vac to operate the distributor ,timming .
Thanks again,Pete