My truck originally had a 5.9 in it and all the stickers support that but the guy i bought it from put a 5.2 in it because the 5.9 had rods blow through it. Hard to tell. I thought i had a 5.9 for the longest time before a talked to him about it. At first i was a little pissed about it but have since heard people seem to like the 5.2 more because it is close to the same power levels and the mileage is better. There are a few guys at work that have had a few of both and they seem to favor the 5.2. No idea why.
Last edited by vmann; 08-21-2009 at 12:32 AM.