LT4 bare casting

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Jan 28, 2005 | 11:46 AM

DopdBrd

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From: Garden City, KS

LT4 bare casting

does anyone know the part number or where i can get some bare casting LT4 heads???

Jan 28, 2005 | 01:34 PM

DopdBrd

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Anyone??

Jan 28, 2005 | 02:05 PM

METALBEAST

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I've got it in a book. If noone else answers, I will when I get home.

Jan 28, 2005 | 02:57 PM

DopdBrd

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Thanks. Ya I Cant Find Them Anywhere, Unless Im Just Looking In The Wrong Place.

Jan 28, 2005 | 02:58 PM

aintno6

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I thought they quit selling the bare head. This is all I could find. http://www.sdpc2000.com/catalog/3129...inder-Head.htm

Jan 28, 2005 | 04:11 PM

GIZMO

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Last time that I checked the bare heads cost about the same as the assembled heads!

Casting P/N 12555690.

Daren

Last edited by GIZMO; Jan 28, 2005 at 04:19 PM.

Jan 28, 2005 | 05:39 PM

METALBEAST

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Casting P/N in my book is 12363287

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Jan 28, 2005 | 09:45 PM

GIZMO

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From: Shelby, NC

Quote:

Originally Posted by METALBEAST

Casting P/N in my book is 12363287

12363287 is the part number for the assembled head not the casting number.

Jan 29, 2005 | 10:59 AM

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METALBEAST

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Quote:

Originally Posted by GIZMO

12363287 is the part number for the assembled head not the casting number.

Looking in my book "Rebuilding the LT1/LT4 Engine" it shows 12363287 as the casting number. It is listed in the GM Casting Numbers section page 182. Below the heading it says "Note: In some cases casting number is also GM Part Number". In the GM Parts Numbers section on the same page just below that, it shows the same number 12363287 for the LT4 cylinder head.

Jan 29, 2005 | 05:44 PM

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GIZMO

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From: Shelby, NC

The casting number is 12555690. The part number for the assembled head is 12363287.

1. A good place to look for casting numbers is

http://www.nhra.com/tech_specs/engine/

Note that the NHRA lists a second part number for the LT4 head (12555332) but I have never seen a head with this number on it.

2. The 2004 GM Performance Parts book lists the casting number as 12555690.

3. Just to make sure I went out to my trailer and pulled a valve cover and the casting number on the head is 12555690.

I hope that this clears up any confusion.

Daren

Last edited by GIZMO; Jan 29, 2005 at 06:20 PM.