Casting #'s info please....(cylinder heads)

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Jan 11, 2004 | 02:28 AM

WiseGuyZ

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Casting #'s info please....(cylinder heads)

What is the casting # on the LQ9 6.0L Head. If Im not mistaken they should be labled on the passengers side cyl head.

Also is 243 the casting # on the LS6 Heads???

Jan 11, 2004 | 04:39 AM

johnny p

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From: CHICAGO IL.

Quote:

Originally Posted by WiseGuyZ

What is the casting # on the LQ9 6.0L Head. If Im not mistaken they should be labled on the passengers side cyl head.

Also is 243 the casting # on the LS6 Heads???

LS6 = 243 Casting # located on the lower right of the Passenger side , And to keep this simple as possible LQ9 6.0L Head is casting # 317 .

( A LQ9 Has D Shaped exhaustport and an LQ4 has an O exhaustport )

Jan 11, 2004 | 06:53 AM

2000Firehawk

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No no no...

LQ4 & LQ9 heads , both are the same...

LQ4 = dished pistons = 9.5 CR
LQ9 = flattop pistons = 10.1 CR

Same ports, same everything...

A truck that has the LQ9 engine may have [317] or [035] heads on it...

Dave