LT1 Heads in an L98?
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From: Pelham, NH
Car: 91 B4C, 17 C7 GS, 16 Denali DMax
Engine: LS3, LS3, LML
Axle/Gears: 3.23, 3.42, 3.23
LT1 Heads for an L98?
I have an opportunity to pick up a set of LT1 heads for a pretty good price. The casting # is 12554290 and they supposidly came off an Impala SS.
Will these heads work as a "bolt-on" to my '88 L98?
Will these heads work as a "bolt-on" to my '88 L98?
Last edited by TKO500; Dec 13, 2004 at 02:58 PM.
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yes they will bolt on... no they wont work.
LT1's use a "reverse cooling" flow. you will have to have them drilled for steam holes and something else, i forgot what the something else is.
those heads are not all that much better than your L98's. the Impala if im not mistaken got the iron heads. i could be wrong, but i think the 96 impala got the aluminum ones.
i could be wrong on the last part though.
anyways, not worth the hassel if they are iron, plus the machine work to make them usable on a Gen1 block. LT1's are Gen2's
LT1's use a "reverse cooling" flow. you will have to have them drilled for steam holes and something else, i forgot what the something else is.
those heads are not all that much better than your L98's. the Impala if im not mistaken got the iron heads. i could be wrong, but i think the 96 impala got the aluminum ones.
i could be wrong on the last part though.
anyways, not worth the hassel if they are iron, plus the machine work to make them usable on a Gen1 block. LT1's are Gen2's
Thread Starter
Senior Member
iTrader: (5)
Joined: Oct 2004
Posts: 608
Likes: 0
From: Pelham, NH
Car: 91 B4C, 17 C7 GS, 16 Denali DMax
Engine: LS3, LS3, LML
Axle/Gears: 3.23, 3.42, 3.23
Cool! Thanks for your help! I'll scrap that plan and move forward rebuilding my L98's.
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