chub406

Ok so I know this has been beat to death and every search I have done says a 5 inch marman clamp. The part that is throwing me off is I measured mine and the inside diameter is 4 1/4 and the outside is 5 3/4. How would a 5 inch clamp work? What am I missing here? lol Thanks!

squarles67

This is the one I used for my S480 http://www.racepartsolutions.com/ind...part-solutions

svslow

There are several options here.

http://www.liljohnsmotorsports.com/t...astegates.html

chub406

The one from racecar parts solutions shows 5.8 inches. that makes sense. I was looking at the ljms ones too. Just throwing me off how they all say 5 inch clamp but obviously its way bigger than 5 inches. lol Im assuming your s400's measured 5.8 too?

svslow

I believe that means its for 5" tubing.

squarles67

It's for 5" exhaust tubing so yes the flange is wider than that.

Mine does look a little different than yours, it has a lip that fits inside the pipe