Generation III Internal Engine 1997-2006 LS1 | LS6

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1998 heads

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Feb 23, 2006 | 12:21 PM

#1

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From: Canada

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1998 heads

Do 1998 heads have a different bolt pattern than 1999+

Will they bolt up to 1999 and up blocks?

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Feb 23, 2006 | 12:59 PM

#2

Launching!

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From: Abilene, Tx

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They should bolt right up to the block. The only difference in bolt patterns is on the valve covers. The '98's have the perimeter bolt pattern on the covers where the 99+ have the center bolt pattern.

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Feb 23, 2006 | 01:02 PM

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STANG KILLA SS 2

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From: Killeen TX

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correct. i have a set of perimeter bolt heads for sale...CHEAP. as well as a set of center bolt heads with isky springs and titanium retainers

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Feb 23, 2006 | 01:11 PM

#4

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Thanks fellahs

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Feb 23, 2006 | 01:14 PM

#5

ЯєŧąяĐ Єl¡m¡иąŧøя ™

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From: Justin, TX

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I have a set of 853's as well that are just used as a door stop now.

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