What size hoses are you using that run from the t-stat to the manifold?

[Krooser]

Just wondering... looks like the used raised t-stat housing I picked up has two 3/8" NPT openings for those hoses... I think that would mean a -6 AN hose? Am I correct?

[brad hibbard]

on a 604 crate engine we have to deal with 3/8" pipe fittings in the back of the manifold
when using dash 6 lines we only bleed trapped air from the rear of the engine however when we go to dash 8 lines we are able to dissipate some heat from the rear of the cylinder head.

Brad

https://www.race-1.com

[7uptruckracer]

Brad How Much in your opinion does this help cooling

[brad hibbard]

we install them on just about every engine but when a guy is on a tight budget I don't sweat leaving them off

it really does not cool better ---it cools more even with water lines (helps the rear cylinders a bit)

I have never seen a water line kit fix a cooling problem

Brad

https://www.race-1.com

[Krooser]

I decided to use -6...thanks.

[let-r-eat]

-6 is plenty.

[Krooser]

Thanks guys... I'm using -6....

[7uptruckracer]

My build motor is an edelbrock intake. I think its 3/8 lines in the intake and i just had to get the T stat riser. Do you run a 3/8 NPT to AN adapter? The Lines he used don't look like AN fittings

[Krooser]

Well I bought some NOS -6 hose originally used for hydraulic lined but ok for water. Max. temp. 240 F. Going to try push loc fittings. I paid $2.00 for each hose... 24" long.