Ok, so I know this is a huge No-No...

But what is the best closed cooling system to go with??
Should I look into block only or full system?

Im looking at a boat that appears to be an OK deal... if I can get him down on the price, as much as the cooling system it may be worth it...
its a 454, with aluminum heads, making around 500HP
looks like EMI Thunder manifolds with the stainless hi-perf risers...

Thanks, Chris

TTT... Anyone help guys? Going to look at this boat today!

Try this guy.


http://www.offshoreonly.com/forums/g...g-mr-cool.html

I have a closed cooling system that i will be putting in the swap section soon ,if interested.

Big exchanger for big block appl. 5" x 25".hoses, mounts etc. from trailered boat always flushed,low hrs..

I have used Monitor Marine and been really happy on 540's. Mr Cool is on here and seems to more than capable also. If you do it and get it correct you will never regret it.
Steve