LT1 short block in w/ L98 components?

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Nov 16, 2008 | 01:00 PM

jimg's'93

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Drifting

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From: Charlotte NC

LT1 short block in w/ L98 components?

Can anyone confirm whether or not an LT1 short block will work in a '91 L98? Has anyone performed this swap?

Thanks!

Nov 16, 2008 | 01:02 PM

96GS#007

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From: Texas

Quote:

Originally Posted by jimg's'93

Can anyone confirm whether or not an LT1 short block will work in a '91 L98? Has anyone performed this swap?

Thanks!

The mating points for the block are the same, so it's a bolt in. Component wise, you also have to use the LT1 (or LT4) heads, waterpump, intake, distributor (Optispark in the case of the LT1), etc. In other words you can't just take an LT1 block and bolt all the L98 stuff to it.

Nov 16, 2008 | 01:42 PM

BrianCunningham

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

You can't put L98 heads on an LT1 w/o modifying them for the cooling passages.

The WP is different on the LT1.

EDIT
Here's a good primer on LTX's

http://www.enginebuildermag.com/Arti...lt1_enige.aspx

Last edited by BrianCunningham; Nov 16, 2008 at 05:06 PM.

Nov 16, 2008 | 02:32 PM

jimg's'93

Thread Starter

Drifting

Joined: Nov 2005

Posts: 1,324

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From: Charlotte NC

Thanks guys. That link is some good stuff! I think either a rebuild or an L98 shorty is in order.

Nov 16, 2008 | 04:46 PM

aboatguy

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From: Slidell Louisiana

Quote:

Originally Posted by BrianCunningham

You can put L98 heads on an LT1 w/o modifying them for the cooling passages.

The WP is different on the LT1.

EDIT
Here's a good primer on LTX's

http://www.enginebuildermag.com/Arti...lt1_enige.aspx

I believe you missing a 't.

Nov 16, 2008 | 05:06 PM

BrianCunningham

Team Owner

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

Quote:

Originally Posted by aboatguy

I believe you missing a 't.

fixt

Nov 16, 2008 | 06:38 PM

aboatguy

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From: Slidell Louisiana

Quote:

Originally Posted by BrianCunningham

fixt

Nov 16, 2008 | 10:02 PM

redrose

Melting Slicks

Joined: Feb 2006

Posts: 2,753

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From: backwoods upstate ny

Quote:

Originally Posted by aboatguy

I believe ya'all are missing a 't.

fixed yours.

4x4 pickers are fond of LT1 complete engine to up their old carbed sbc1's, with the intake modded to accept an l98 dizzy, use an l98 ecm...almost a "drop-in"