How do I tell if the engine was swaped like the guy I bought it from said it was?

[brandon99]

Thats pretty much my question. He said 277,XXX on truck and 100,XXX on the engine. So how do I tell. If he's full of it or not? Thankyou.

[Leo94]

A compression test is always a good way to start.

[Alkorahil]

Visual inspection of the bolts on the engine and transmission mounts and the bolts on the tranmission bellhousing would be a good clue. See if it looks like they have been off before.

[MrT]

Check to see if the VIN numbers match.

[Precise1]

^That was my thought as well...

 

B

[Kingman]

Bolts, stuff that's cleaner than usual, missing things, maybe a mismatched bolt or two, vin, fresh looking gaskets, etc.

[brandon99]

Ok so checking the vin seems like the only way to be sure... so where on the engine should i be looking for the numbers?