I just picked these up for a customer for a Magnacharger install, but he decided to go a different route and now I need to get rid of these heads. They are the 317 6.0L LQ9 heads.

They are brand new and ready to be bolted on. They are in excellent condition as you can see from the pics.

$400 + s/h

 

This might be a dumb question but will those go on a 4.8?

 

I think with 72cc heads your compression would drop so much, you'd hate them.

 

to the top

 

What would be the compression ratio be on a 5.3 with these, i am putting on a radix and want to drop the compression.

 

Still too low unless youre gonna boost it, alot. I don't have a calculator handy but the heads look like this:
6.0: 72cc
LS6: 65cc
5.3: 61cc

I'd guess in the 8.X:1 range.

 

The magical and wonderous search button has again brought forth great wisdom and knowledge:

https://www.performancetrucks.net/fo...q4+compression

 

Did search guess i missed that one eyes are getting tired sorry