Roundncircles

Circle track guy here, I want to see if it's possible to build an all iron 6.0L including iron heads and make 550hp we are racing on narrow treaded tire and have found that hp to be perfect. I would prefer to run on gas but alchol is an option. I have always built the tried and true 1955 chevys for racing but would love to make the jump to LS. The rules state if aluminum head must be 23 degree. No rules on cast head so that is why I'm searching for cast heads. I also have a back up plan for this engine if they get sticky with this rule. I need the casting # for the steel LS head and again is 550 HP attainable with more compression and a better cam?

Tuskyz28

Hope this helps ....

https://www.hotrod.com/articles/ccrp-0705-chevrolet-ls2-l92-cylinder-heads/

On the other hand LS heads are 15 degrees Mostly... but not all. There is no such thing as a 23 degree LS head.

JoeNova

99-00 6.0 317 heads are cast iron.

Roundncircles

TY, The rules state aluminum heads must be 23 degree, they don't give a degree on cast that's why I'm thinking going cast plus they give 50lb weight break for cast.