On a small block GM V8, it is stamped in front of the cylinder head on the passenger side. 8L Duramax engine in the Holden Colorado upgrades for 2. L14 = carby 6 LL9 = EFI 6 元1, LV2 & V7X are all V8. Later blocks such as 82, 83 etc can be distinguised from 72, 73 by having 4.
Look behind the distributor on the passenger side of the block if it is a six- cylinder GM motor.
