440 source heads.

[Russ69Runner]

Has anyone put a set of these heads on a 383. Directions state after installation fire up the motor and bring to running temp then let it cool down and retorque the heads. This is a bummer, but I guess it is what it is. More work . If you have these heads, how do they work for you. Thanks Russ.

 

[6PKRTSE]

I installed a pair on one of my buddies mild build 400/451 stroker. After cam break in and several heat cycles we re-torqued them. He now has thousands of miles and several years on them with no issues.

 

[Russ69Runner]

Thanks for the reply. I know it was relay hard to get those 906 heads off. But the new aluminum ones where a lot better to handle weight wise. I will try to keep everyone up to date on how they work for me.

 

[6PKRTSE]

Of course I probably should have added that we went through them entirely before just bolting them on. Never trust anything right out of the box.