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FS: LQ9 Stage Two Heads


bomax

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j4nash: I can't really say for sure... They have 72cc chambers though if that helps..

 

Z06 DREAMING: Good question! They include dual springs and new, larger valves. Here are the exact specs:

 

 

New OEM GM castings

 

72cc Chambers

 

5 Axis CNC Ported

 

Patriot .650" Dual Springs

 

21-4N Stainless Valves

 

Bronze Guides

 

Titanium Retainers (Not 100% that mine came with these, since mine are magnetic)

 

5 Angle Valve Job

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what compression would I see with them on my 408 with 15cc pistons?

 

 

Might be a question for your engine builder. Or just calculate it yourself. There are several online sources where you plug in the numbers and it will tell you.

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what compression would I see with them on my 408 with 15cc pistons?

What CR were you building your motor for? If you were basing it on your stock chamber size, which is 71cc, then these would not alter your CR, but maybe a very small fraction.

 

 

What size are the valves? I assume 2.02/1.57, or close to?

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