You are absolutely correct about the rubber conforming. About an hour after initial install I re tightened the clamps and got about 1/8" more turn. That is part of the reason I wish I could have found the spring loaded clamps for this hose. It does keep a more consistent pressure on the hose.

Oh yes I completely agree, I have always done this especially on 4 inch exhaust hose after removal or replacement, run everything up to temp let it cool down then give all clamps a wee tighten, I do this with my exhaust manifolds bolts to sometimes after a couple heat cycles. Always great practice to retighten everything that has been removed/replaced during winter refits, well at least those of us that do winter storage and refit, and I have to remove water manifolds to do just about anything in engine compartment as I shoe horned a tall deck 496 where a skanky ford 351 was. LOL

I use these clamps :

https://www.mcmaster.com/products/ho...hose-and-tube/

https://www.mcmaster.com/products/ho...se-and-tube-7/

These for everything else not pressure related :

https://www.mcmaster.com/products/ho...hose-and-tube/

Thanks, I may switch the clamps over to the spring loaded for piece of mind. Since I can't get 2 clamps on each connection like I was hoping.

If anyone in or near Michigan is looking for a 454/ 502 mag closed cooling system, I have a complete, mint take off with every part Im gonna post in swap shop some day, dont especially want to ship iit, Smitty