How can I identify an lt1 block?

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Sep 30, 2006 | 10:06 AM

glock22_40

Thread Starter

Newbie

Joined: Sep 2006

Posts: 2

How can I identify an lt1 block?

My brother has an old 350 4bolt block that is supposed to be an lt1. How can I check to see if it truly is? Thanks.

Sep 30, 2006 | 12:18 PM

z28pete

Tech Droid

Joined: Aug 2005

Posts: 9,215

From: North East PA

RE: How can I identify an lt1 block?

Probably from the heads. All the blocks were pretty much the same when cast.

Oct 1, 2006 | 04:44 AM

uncle bill

3rd Gear Member

Joined: Sep 2006

Posts: 793

From: San Antonio, Texas

RE: How can I identify an lt1 block?

The whole front cover assembly is unique to an LT1 / LT4. Generally, LT1's are 2 bolt main and LT4's are 4 bolt. The timing cover is it's own like no other small block.

Oct 1, 2006 | 09:41 PM

SickSickSick

3rd Gear Member

Joined: Mar 2006

Posts: 925

From: Orange, Texas

RE: How can I identify an lt1 block?

the casting number for the old LT1 was 3932386. some 302's and 327's also had the same casting number that year. Sick

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