i just bought a ls motor how can i tell the differance from a jdm motor and a usdm motor?

 

ls engines are the same jdm or usdm....but you could look on the wiring harness....or just simply look at the block stamp(on the bellhousing on exhaust side of engine halfway up block..)

It should say B18B if its jdm.
It would say B18B1 if its usdm..

or it could be B18A, A1 respectively if it it's older than 94

 

all it says is b18b

 

then you should knoe the answer

 

jdm is cooler didnt u know this already jdm whore bitches get a Y seres buck on that LS slow jank