Odd question... Radiator Cap

[Underdog]

What radiator cap should I run with my 604 crate late model?
20-22lbs. Or
23-25lbs. Or
29-31lbs. Or
31-33lbs. ???

Any/all input welcome, thanks, KB

[MasterSbilt_Racer]

As much cap as the rest of your system can handle as far as pressure goes. It should be the weak link in the system.

[billetbirdcage]

As much cap as the rest of your system can handle as far as pressure goes. It should be the weak link in the system.

Agreed. On a side note, with higher pressures make sure your hose connections have a good bulge or ridge on the component or you can blow a hose off.

[Underdog]

Thanks guys

[Jking24]

Thanks guysEvery psi raises the boiling point roughly 3°f so the higher the cap the hotter you can run before melting it down

[SlicktoSlime]

Keyser sells a 38-42 we have been running them for a few years.