I have a friends thats very cummins minded, and i hear im talk about timing every now and again. How do u adjust the pump timing? Is it something you can do to a stock pump? Also i took his 180 pump plate and put it in my 160 pump and slide it forward all the way, what kinda hp at the crank do you guys think that might be??

thanks for the help

 

if you like to get greasy and are seriouse about knowing your truck you can do your own timming, but you have to buy the tools! and it is a pain to do. if you look here you will find a detailed guide

 

Yea, setting the timing is easy to do, just takes time, and the right tool.

As far as putting the 180 pump plate in your 160 pump, I doubt you will see any improvements. The differences between those two pumps are more than the fuel plates. If you want a power improvement, modify your own fuel plate by grinding it. Just a warning, doing this can put the life of your tranny at stake, but most do it comfortably.

 

Well i already have fact that it helped alot. I got 8 more PSI and a little cole off a dead stop. thanks for the help guys

 

There is a way to up timing with out the tools. If you haven't fixed the kdp you can do timing with just some measuring on the harmonic balancer. One degree of pump timing is .084 thousands on the harmonic balancer. Most stock trucks have 12.5 degrees unless they have slipped or been advanced. Mine hadn't so while fixing the dowl pin I popped the gear loose from the pump and backed the motor up one half inch. I was wanting around 18 degrees give or take a little. 6 degrees times .084 equals .502 or one half inch. Mark the balancer before you start make a mark a half inch back and bang 18.5 degrees.

Some are going to say they would never do it that way. Before they do, it worked good for me. Don't do it if your not sure of what your doing. If you do timing be sure to get the pump nut good and tight. I torqued mine to somewhere around 140 ft lbs. and then went a quarter turn more. Be sure and get the shaft and gear real clean, thats why I did it when doing the kdp. It could be taken completely off and cleaned.

I learned this from another sight from a guy building a junker race truck.

 

Glad you liked it Timing usually seems to help quite a bit! How much did you bump it up to?

 

Well i only put a friend 180 pump plate in and slide it foward so idk how much power that is. But if the pumps are different then im probably at 180 . either way i felt a huge difference. Just waiting on some tranny parts. I got a hook up on a brand new triple disc for 875.92, master kit for 154.00 6pin steel foward planitary 99.50 and the all the updates and forward band for a nice grand total of like 1,065. SOOO once i rebuild the trans im shootin for 500 whp and 1000 lbft +/-.