Longevity of the 7.3?

[Strokin_it7.3]

it wont be necessairly "cheaper" to run a manual, but most like the fact of the stronger components, nearly bulletproof design of the ZF. when you add alot of power to the ZF, all you'll really need is a clutch, and youre good to go. however, the stock automatic transmission (mainly Torque Converter) will quickly show it's faults, and at the same HP as a stock clutch-ed ZF, the auto will slip like a three-legged dog on ice. the automatic is better for city driving, and when modified ($3500+) is then a BULLETPROOF transmission, that is better for racing than a manual, because it shifts faster. manuals are best for towing.

i have an auto and am getting by with it, but i wish i would have gotten the ZF6 in my truck when i bought it. i have some mods to my transmission to help handle the extra, such as Sonnax valve/tri springs, Amsoil Synthetic fluid, and TC lockup switch. also my chip has some custom transmission tunes that makes it shift very rapidly and firm. the TC lockup is great, it is basically an automatically-shifting manual 4 speed transmission when i put the TC lock on from a start. BUT, its the same as shifting without a clutch. jerks the truck like if you don't finesse the pedal.

 

[MUDWHISTLE]

What about the cylinder heads? when should a valve job be done? I have a friend that has worked in an engine machine shop and does about a dozen cummins 24valve heads a year in the area and says that they usually have around 250,000 on the engine and the guides are generally shot. anyone know how long the heads last on a 7.3 powerstroke? My buddy has done some psd heads but not as many. what do you all think?

 

[MUDWHISTLE]

Hello all, I have been looking around doing a search and couldn't really gather a handle on how long these engines are good for if properly maintained. I am looking at possibly buying a 99' - 00' Powerstroke. Most of the trucks (I am looking for a 4x4 Crew Cab) I am finding in my price range have 180-200k miles. I am wondering if i'd be purchasing a truck that is on its last legs. Thanks for any input or information.
J. Mallonee

Hey there is also a good chance of finding a obs crew cab with low miles, I know a gy thatbought a 97 ccsb with only 120,000 on it for around 13,500$