Engine/Transmission (1994 - 1998) Diff. between a 1996 auto and 5 spd.

[PWeber]

I have a 1996 3/4 ton 5 spd. I told my friend with a 1996 1 tom 4x4 dually auto his engine was 185 HP and mine was 215. What diff. creates that delta and is it mainly because of the auto trans?

 

[bighammer]

Not sure if the pump is different, but I'm pretty sure the injectors are.

 

[JJW_ND]

Lots different

There used to be a comment on the Cummins site when these trucks were still fairly new.



I believe the engines have atleast the following differences: P7100 pump, injectors, pistons, harmonic balancer.



jjw

ND

 

[BillGotthelf]

3 out of 4 right JJW-ND. The pistons are the same. I have heard that the injector pumps are different but after who knows how many upgrades both 96 stick and auto have the same injector pump part #'s. Harmonic balancer is different because of the stick/auto and the injectors do have a different part #'s. In fact back in 97 BD was selling 30 hp increase injectors for the auto's and all they were were 215 remans from Bosch.