So im here board at work so i figure id ask. I never really cared about how the lt1s were reversed cooling but now im kinda curious. All i know is that it cools the heads or block better, not sure. But whats the deal behind it and what way does it flow?

 

the coolant flows through the heads first allowing it to transfer more heat since the temp differential is greater. Its kind of handy since it allows you to run a bit more compression since the heat in the top end it kept a bit lower.

 

I'll tell you something else, dyno testing a LT1 all day long on a engine dyno is really impressive for guys who normally work with SBCs. The coolant temps stay consistant and much colder coming out of the motor. One of the reasons why a LT can take so much compression on pump fuel.

Bret

 

Like they said, it lets us run much higher compression by keeping the heads cooler, and I've noticed that generally the temp stays alot more consistant throughout the whole trip.

Another interesting piece of info, and I'm pretty sure on this, only other motor that uses reverse cooling is the Viper V10. I might be wrong though.

My motor is running about 11.6:1 SCR on ****ty california 91 octane. No problems