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GM Crate # 12551183 LT1 or LT4?

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Old Nov 4, 2003 | 03:55 AM
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Matt_Ky's Avatar
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Joined: Nov 1999
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From: Northern KY
Car: 1998 Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23
GM Crate # 12551183 LT1 or LT4?

I located a crate engine (Corvette) for sale that the seller is calling an LT1 long block plus. After researching the internet, the GM part# 12551183 comes up an LT4. Can anyone confirm if this crate engine is an LT1 or an LT4.
The engine is still in the crate and includes the fuel injection, distributor, exhaust manifolds, water pump, plug wires, even the flywheel, clutch and bell housing.
Another question, Im trying to find/figure out if the engine will drop in my 1991 Camaro RS. Two issues I can think of - may need F-Body oil pan if one is even available for this engine and I'm not sure if the motor mount location is different than Gen I SBC. Also not sure if 700R4 will bolt up to this engine?
One concern is the build date is 8-28-97 which means the engine has been sitting for 6 years now!!! English and French writing on one of the tags on the engine, so I guess it was built in Canada.
Comments or thoughts? Anybody running this engine in a 3Gen Camaro or Bird?
Thanks
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