Need help identifying motor and transmision


New Member
Dec 21, 2019
So i just purchased a chevy vehicle, but was told it had a swap done, he wasnt sure the year make and model, it came out of. so im trying to purchase parts for it, but i have no idea what to look for as i dont have any of that information,

The numbers i got off the motor are GM B3 82 471594. From what i can tell its a 3.8 but what did it come out of and what years ?

My other question is the transmission, the numbers i got off it are E 8641711 110214-A. Then on top of trans it has M31

do not know if thats all one number or seperate numbers
on side of trans the 864 number is on top and the 1102 number is below it

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