Rickys S/C Z28

iTrader: (13)

Have any of yall ever used these head with big boost? I think they would be bad ***. with the way there casted as well as i have read they have a thicker deck.? any info ? or am i going to have to be the ginny pig

Rickys S/C Z28

iTrader: (13)

nothing?

JAX04

iTrader: (17)

I can only think of one person on here thats using them, Rotary1307cc, he seems to like them.

tim99ws6

iTrader: (31)

What do you consider big boost.

67RSCamaroVette

iTrader: (63)

They have about a 3/4" deck and ports are nearly identical to L92/LS3, except for a little casting in the intake runner to swirl the supercharged air.. I plan on running them as soon as possible, although i'll cut out the little blip in the runner.

tim99ws6

iTrader: (31)

That's correct. They are also made from the higher end alloy that the c5r heads are. The ls9's have a 12mm head stud hole as well. Also ls9's have a titanium intake valve.

Rickys S/C Z28

iTrader: (13)

20lbs plus

Rickys S/C Z28

iTrader: (13)

Good info. thanks

tim99ws6

iTrader: (31)

All. Day. Long.

NemeSS

iTrader: (127)

I didn't think they had such a thick deck for an oe casting.
Has this been confirmed?

westtexasbuff

iTrader: (40)

They are 68cc as cast, but can be worked on to get a bigger cc. They are a high-strength casting made of A356T6 alloy, for greater heat resistance, manufactured using the roto-casting method (like the LS9 heads) to virtually eliminate porosity.

They are a great head for turbo!!! I plan on making upwards of 1000whp with mine.

Here are mine after I had them hand ported. We took out most of the swirl wing, but left just a bit to help with atomization.

PRAY HRD

iTrader: (119)

does anyone know what the minimum bore size needed to run these is? and i hadn't heard anything about it being a 3/4" deck but definitely the better alloy. Would love to get deck thickness confirmation as well.

NemeSS

iTrader: (127)

Yea, I read about toto cast and better alloy feature, but this is the first I've heard of the .750 thick deck. That's awesome if so

67RSCamaroVette

iTrader: (63)

I looked it up and it appears I was mistaken. LS9 heads are marginally (only a few thousandths) thicker than a LS1 deck..