Join Date: Dec 2008
Thanked 62 Times in 51 Posts
mike. the 6.5 engines have a better pump then the 6.2 engines do. they can deliver more fuel and at higher pressures. a stong well built pump on any diesel is it's life blood, but nowhere else is it more important then on 6.2/6.5 engines. all pump rebuilders are not created equal, when it comes to 6.2/6.5 engines. i have swaped pumps out on the engines that made them perform better/worse. having said this, another reason the 6.2 you speak of cooks, they are governed a little higher then the 6.5 engines were.. i have a 6.2 with a banks turbo, a well built pump, and a few other tidbits added, the stock clutch wont hold the power under full throttle.