1992 Buick Roadmaster engine spec,s

Hello to all ,,My first time posting ,,I have a 1992 Buick Roadmaster Limited with a 5.7 fuel injection motor,,People are telling me that this is the LT1 that came in the Corvette , but then some say its not ,,How can you tell for sure what it is , any help would be appreciated, Thanks.

The Corvette-based LT1 engine was not installed in the Roadmaster until 1994. The 1992 came equipped with a 5.7-liter T/B injected V8 rated @ 180 horsepower and 300 ft lbs of torque.

Thanks for the info,,,