Engine/Transmission (1994 - 1998) injection pump mods

[JTharpe]

I have a 160hp pump, I am wondering what the best mods are for it. I have purchased a set of 4k governor springs, what delivery valves should i use for street/towing. What fuel plate should I use and do I need to do anything with the afc housing? and what timing should i set it to.

 

[Cosmo]

What's your goal? What truck? What mods on the truck already? What gearing? What is the primary use? What RPM does your truck spend most of its time at?

 

[JTharpe]

98. 5 24 valve p-pump conversion its the truck in my signature, I am also putting rv275 injectors popped to p-pump specs. I will spend most of my time at the 1700-2000 rpm range, its a daily driver and occasional towing of about 6 horses

 

[Bob4x4]

Waste of money

 

[GAmes]

For towing I recommend a towing plate like mine from Austin Injection. If you are going to spend most of your time at 1700-2000 rpm there isn't any point in installing the 4k kit. With a little tweaking the stock springs are good to 3200 rpm and the tq comes in at a lower rpm too. Start out with about 15* of timing, then adjust a few times until you get what you are looking for.

 

[JTharpe]

Thank You, GAmes. Do you have stock delivery valves in your pump and do you need to do anything with your AFC? I emailed Austin Injection about their custom plate.

 

[GAmes]

Stock delivery valves, but my pump is a 215. The pump was benched by Austin injection and they tweaked the AFC. The owner of the shop drives a '96 12 valve, and tows, so he is in tune to those needs. Buying a towing plate from him will more than likely give you some instruction time over the phone on how to set up the AFC.

 

[Joseph Donnelly]

The classic upgrade is the TST #6 power kit. A #5 would mean getting a 16 cm2 exhaust housing or something else to keep egt down. You could also install the TST AFC kit. However, the most recent design of VP44 would be a lot cheaper and pretty satisfactory, especially compared to the 160 HP version of the P7100.