LS3 Head

[colby]

So where would this head fall class wise in Modified or Modified Stock?

[SSDiv6]

Originally Posted by colby

So where would this head fall class wise in Modified or Modified Stock?

SS/BS class - Inline or Canted Aluminum
SS/CS class - Inline and cast iron only.

[Mark Markow]

it can run in ss/as or ss/bs not c/s since it's aluminum.

[SSDiv6]

Mark is correct.
There is a cast iron LS6 head that was, used in the LQ4, 6.0L engine with both cast iron block and heads. They are a copy of the LS6, 15 degree head with cathedral ports. SS/AS is a difficult class because they also allow splayed valve heads.

[Adger Smith]

I have always wondered if you could use the iron LS heads successfully in SS/CS. It would be easy to build a small 286 cu in LS to make class minimum weight. Has anyone tried it?

[SSDiv6]

Originally Posted by Adger Smith

I have always wondered if you could use the iron LS heads successfully in SS/CS. It would be easy to build a small 286 cu in LS to make class minimum weight. Has anyone tried it?

Adger,

It should make some crazy power in SS/CS.
As cast, the cylinder head has a 210cc intake port volume.
They are also cheap the same with the 6.0 cast iron block.
I don't think anyone has built one yet.

[Glenn Briglio]

Originally Posted by Adger Smith

I have always wondered if you could use the iron LS heads successfully in SS/CS. It would be easy to build a small 286 cu in LS to make class minimum weight. Has anyone tried it?

Can't use those cast iron heads in ss/cs. Heads were only available on a truck...........Unless nhra changed their ruling on this.

[SSDiv6]

Originally Posted by Glenn Briglio

Can't use those cast iron heads in ss/cs. Heads were only available on a truck...........Unless nhra changed their ruling on this.

Glenn, they changed their ruling and the cylinder heads can used in the Modified class only. Not in the regular SS or GT class.

[Rick Leininger Jr.]

Originally Posted by Adger Smith

I have always wondered if you could use the iron LS heads successfully in SS/CS. It would be easy to build a small 286 cu in LS to make class minimum weight. Has anyone tried it?

Hey Adger, how are you?

Not currently pursuing it, but collected a few LS blocks & LS iron heads for this combo. The blocks will handle a 60mm cam bearing and .937" lifter bushing no problem. The lowest deck height block offered is 9.230", but of course that can fixed. The LS iron heads have the same intake & exhaust ports as the LS6 head, but the chamber is open and rather large at ~71 cc's, so some welding the chamber up and possibly rolling would be needed.