4.2 vs 4.0 identification

rgirardi

Member
Joined
Mar 17, 2021
Messages
37
Location
Raymond NH
Hi
Is there a quick and easy way to tell the difference between a 4.2 and 4.0. I am going to look at a couple of used engines. The seller believes he has a 4.2 carbureted and a 4.2 retrofitted with the Fuel injection you could buy from jeep. I want to make sure the FI engine is not in fact a 4.0 FI. Thoughts?
Thanks
Ralph