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SSDiv6 · 11-17-2023, 07:03 PM

This was part of my communication with Pat at NHRA...

Hi Pat,

The cylinder head is the Chevrolet GMC 6.0L, LS, LQ4, Cast Iron Cylinder Head, P/N 12561873, Casting Number 873.

This is a cast iron OEM LS cylinder head.

Regards

His response...

Yes, that would be an acceptable cylinder head for SS/CS.

Pat Cvengros

Pacific Division Technical Director

11-17-2023, 07:03 PM	#21
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,045 Likes: 712 Liked 1,605 Times in 583 Posts	Re: SS/CS Chevrolet Cylinder Heads... This was part of my communication with Pat at NHRA... Hi Pat, The cylinder head is the Chevrolet GMC 6.0L, LS, LQ4, Cast Iron Cylinder Head, P/N 12561873, Casting Number 873. This is a cast iron OEM LS cylinder head. Regards His response... Yes, that would be an acceptable cylinder head for SS/CS. Pat Cvengros Pacific Division Technical Director