What's the difference between 95,96,97 7.3s

[HostOrchard]

Diesel newb here. I'm looking to buy a 7.3 OBS and I'm not sure if there are any major differences between the 95, 96, and the 97 motors.

Also, would you buy a 95 XLT Dually? If not, why.

Any help would be greatly appreciated!

[alberta 7.3]

Essentially, there are only minor changes as far as engines go, power outputs changed sightly as a result of different tuning.

The 94.5-early 95 used a High pressure oil pump that is different from later models. Using a later model pump will result in the High pressure pump supply reservoir draining out when parked. There are modified pumps and other modifications that will work around this issue.

The mid-95 and 96 engines were pretty much run-of-the-mill with no noticeable changes.

96 and 97 California models used a different PCM and wiring, utilized split-shot (pilot injection) injectors, and had a pulsation damper on the fuel pump.

1997 engines had a different oil pan, oil pickup, and front cover in an effort to reduce the "dry start" of a lack of lubrication oil being pumped. The 1997 block was also thickened and reinforced internally in an effort to reduce combustion noise.

[sldghamr]

i don't know of any differences except that the 97.5 cam sensor got changed.

[351fifty]

if the 97 is quieter then the rest because of a thicker block my neighbors would hate if i got an older one then, mine currrently is laud as all hell, and you cant talk on a phone in front of the truck while running, everyone just complains about it ratteling and running so laud compared to other newer vehicles

[08spartan250]

Originally Posted by 351fifty

if the 97 is quieter then the rest because of a thicker block my neighbors would hate if i got an older one then, mine currrently is laud as all hell, and you cant talk on a phone in front of the truck while running, everyone just complains about it ratteling and running so laud compared to other newer vehicles

i would just tell your neighbors to deal with it. i love the sound of these trucks!

[351fifty]

i did, and i love it too, my bro and dad keep talking bout how i drive the ups truck, and the stacks make it sound like im at a monster truck show, they are just jealous, my bro has an 01 monte carlo ss, and its just a 6 cyl, and my dad has a 2000 excursion limited with a v10, his is to quiet for my taste, and my bro, well he drives a chevy so i dont care

[mytime]

I don't know about the 97's being quiter. I have a 97' and whenever I see another OBS, I try to compare the noise to mine. Mine always seems to be louder even though I still have the Cat and Muffler. (Soon to be removed.) I like the sound though. I just put in a high pressure crossover oil line and it seemed to smooth it out a bit. I have only had the truck for about 4 months, but love it!