Originally Posted by sapsz28
ADAM 65 you mentioned a necked down shaft I called jegs and summit and Moroso and they all said its the same shaft for 350 or 400 sbc what make or model shaft are you reffering to specifically.Thanks again for the tip but I cant locate what you wrote about
There is a difference:
Oil Pump shaft: 350 main = Stock shaft (.481” OD)
400 main = Stock shaft (.425”OD)
I personally have always used an ARP shaft, it has plenty of clearance.