Originally Posted by Conway68
If I considered the 427 Industrial would it make sense to eliminate the Brownie 3sp auxilary?

Also I have either the 11,000 or 15,000 lb full floating single speed rear end Chev made. Not sure how to identify which one.


I sure wouldn't eliminate it. It's nice to have the extra gears anytime you would need some. You don't have to use them all, just use what you would like to.

I would say that you have the 15 Rears, but what is the GVW on the truck? Also look for the label on the glove box door for axel info.

Bill



'60-'72 Chev/GMC Fan
GMC 9500 Fan
Detroit Diesel Fan