1970 c50 PS pump quesion

[bigrigpardo]

My 70 c50 just showed up from Utah finally. I am running through the smalls to dial this thing in as much as possible. It's has PS but the motor was swapped for a later 350 it was originally a 350 as well and looks to have correct pulleys. Problem is PS bump is dead and is the normal car/truck style. I have a bunch of them. Will the standard pump be OK on this set up or do I need the bigger one with the double groove pulley and external resovoir?

[68panelman]

Most likely why the current pump is dead, too small. Remember the size tire it's trying to turn. Someone here has old literature to verify I'm sure, Matter of fact I know it's a larger pump, wait.. my memory provided a picture of one I've seen, haha. I would try to find or purchase the correct pump. Try the pumps you have first, but if used regularly, use correct one