mechmagcn

I have had my '95 3500 Dodge for years, but the Cummins has been so dependable that I really haven't had to do much to it. Well, it now has well over 350K on the clock and is getting a little tired. I want to check and bump the timing a little, but have no idea what HP engine I have as the gear case was replaced before I got it due to KDP. Of course the mech that did that job tossed the engine tag along with the old case. The only numbers that I find on the pump are 379 13802, is this anything I can go by to figure out the dimensions for checking the timing? Any other ways to find the engine serial number or CPL?
I'm not into hotrodding or even high performance tuning, just want my truck to pull like it used to.

Tate

The CPL or ESN mean nothing if the pump has been changed. It should be a 160/175 pump, which is usually a 838/841/854 pump. 885/911 would indicate a 180hp pump, 887/913 is a 215hp. 912 is a Cali 180hp pump for manuals. The pump number will be located under the throttle linkage bracket. Remove the three 8mm bolts and it should be there. You'll likely need a mirror and a light.

If the tag is in fact missing, you can use a more visual method. With the DV removed from the #1 barrel, rotate the pump until the plunger is at BDC. You should see the spill ports on the sides of the barrel. Rotate the pump to bring the plunger up to just cover the spill port. This is the lift to spill port closure. Multiply the number of degrees desired by 0.2mm. Add this to the SPC lift number. That will give you the total lift on the plunger from BDC that you want.

Ex. SPC is 3.2mm. 16 degrees x 0.2mm = 3.2mm. 3.2 +3.2 = 6.4mm

mechmagcn

As far as I know this is the original pump, I've known the previous owners and the gear case change was the only major work done on the engine. The number I posted is the only one I can see on the pump tag, but that is trying to see it with the throttle bracket still in place.
Edit: I looked at the pump tag again with a light and mirror, looks to be a 908 in the top corner of the tag, but the number I posted is what is stamped into it.

rebal

you will need to remove the bracket to see the tag it wont be stamped in the pump it should be a tag attached to the pump it will more then likely be a 160 pump

Tate

908 is on every tag. The number you seek is 0 402 736 XXX. The last three digits are what we need.

dieseldemon

If it is stock auto it is a 160 HP if it is a 5spd it is a 175 HP

mechmagcn

Thank you! It's a 5 speed truck.
So, with that info, what are the stock specs for pump lift and what would be recommended for a fairly heavy work truck. Not looking for a lot of performance gain, just would like for it to pull somewhat like it used to.

chariotdriver

The pumps are pretty bullet proof..................what does the compression look like? If it has been worked a bit the pump won't know the difference, but the rest of the engine will. Nice job, when kept stock, these engines will run a very long time. Keep it as long as you can stand because you won't be very impressed with the new stuff.