Since the machinist and builder agree on me usuing a BG in my built motor setup, I'd like to know what your opinions are on the two that I know of off hand, STR and NuFormz. CFM reccomends NuFormz, but I thought I heard somebody mention STR has better coolant flow, can anybody conform this? Reccomendations and places to buy them for the best price? Thanks

 

If I had to use one I would get the STR. OptAuto has them for $120. Url forthcoming.
http://www.optauto.com/webstore/prod...=yes&dept=1137

 

STR supposedly has a superior coolant flow design... that's what an extra $20 gets you....

 

Try race engineering blockguard. They are 90.00, and have very good cooling capablities. I have used mine now for over a year, now overheating problems.