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Old 02-21-2010, 01:28 PM
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Gm 5.7lg Sgi

I am currently working on a GM engine with the block number being 14093638.
This number is on the right rear of the engine. On the left side is GM 5.7LG SGI . I can't seem to find out any information on this engine and would appreciate any help. Thank You

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Old 02-21-2010, 01:50 PM
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www.mortec.com
14093638...350...87-95...2 or 4...Roller or flat tappet cam, one-piece rear seal
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Old 05-17-2013, 04:02 AM
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I'm a little late on your question, as I have the same motor! Same casting numbers,
Here's what I have:

Sgi- 14093638
Stamped # 6
B/150
Stamped on sides: 638

A 1992 Camaro z28 tune port inj, 5.7 (bc4) motor, from a Texas state hiway patrol vehicle, go figure!

But there again, it's also made as a lt1 corvette motor!

So your block is a nice one, as it can be modded to nearly what ever u wanna do to it, it's the same and used in yesterday's corvettes, Camaro/Trans ams, and gm trucks, and I believe, but not sure, was used in the police packages, and on the first 1994 Chevy impala ss model.
How this helped, as I was also stumped too!
And finally did tons of research on it, so I am keeping my motor for my Iroc z....
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Old 05-19-2013, 09:36 AM
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B4C was the code for Camaro pursuit vehicles.
The LT1 Vettes engines were ALL 4 bolt mains, LT1/99 Caprice, Camaro Firebird were all 2 bolt mains.
638 was NOT an LT1 block, the LT1's were all reverse cooled(heads than the block) and used a differnt GEN 2 block which is NOT interchangeable with the GEN 1` and GEN 1E(Vortec) generations.

peace
Hog
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Old 06-17-2013, 10:53 AM
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My first post so forgive my ignorance.
I am trying to get rid of a 5.7 LG sgi with 10243880 and 880 on both sides. I took it out of a 97 suburban 4wd. This is the original engine from this truck and not really worth anything is it?
A couple bearings went and screwed up the crankshaft but the block is fine and the cylinder bores have no ridges or scoring.
I would like to get 50 or a 100 bucks in the mpls area. Would that be unreasonable?
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Old 06-17-2013, 11:50 AM
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$50 for a bare block with little to no rust seems like a good deal. just be sure to keep the mains in the proper order.
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Old 06-17-2013, 02:57 PM
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Its not worth nothing. Its a 880 block which is ready for stock roller cam. Worth the same as any other use 350 block, more in my book as its ready for roller equipement.

$50 would surely be a great deal for someone.

peace
Hog
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Old 06-18-2013, 09:11 AM
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Thanks guys.
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