Seems like a good mod is the 17*HPOP. What does the 17* degee refer to, what's involved in the install and what are the expected power increases? Are these aftermarket or available from Ford and how much should I expect to pay for one?

 

A 17*HPOP is a stock SD oil pump off the newer 7.3. It is a great mod if you have injectors or are planning on going with a set. They don't get starved out like our stock HPOP does. Yes, you can get them from ford. I myself don't know what the 17* crap is about but there are a couple that should be able to shed some light on the subject. I heard its a time consuming install, thus why i haven't done it yet but i need to get it done with these bigger squirters i have now. Hope this sheds some light on the subject for ya

Cowboy Steve

 

here is my best description to this question. the hpop is a piston pump with pistons held in a cartriage that reminds me a revolver (the gun) the pistons go where the bullets would and have a spring in the bore with them. the cartriage is connectoed to the rotating shaft. the piston ride against a ramp to counter act the spring but also is how the pistons are moved for the pump action. so the pistons ride rotate along this ramp that is in a wave type form. so the 15* pump has a 15* incline and the 17* pump has a 17* incline therefore allowing more pumping capacity. longer stoke equals more volume.

 

oh yeah Steve is correct that the 17* pump is a late 99 to 03 7.3 stock pump. the early 99's still have the 15*. As for the swap its pretty easy as long as your truck is 96 and newer. if it a 96 and newer its drirect bolts up. I did mine with the fuel pump in about 3 hours. Oh yeah my pump was free too! Core engien sitting in the shop was a perfect donor. plus I have my 15* for when I built my own big oil!

if you have a 95 or 94.5 you need to do a anti-drain back mod. the early (95 and earlier) have a anti drain back valve in the pump. the 96 and later have a anti drain back built into the front cover.

here is a write up for the anti drain back mod
http://www.nigh.org/HPOP_Mod/HPOP_reservoir_HowTo.htm

here a how to for the bolt up procedure
https://www.ford-trucks.com/forums/5...-part-1-a.html

Rubberduck disclaimer "the author of this article takes no liablility, stated or implied, as to the torque values used in this prodecure or the actual proper procedure that is stated by the engineers of such systems. User of this write up assumes all liablilty with no legal or civil recourse in the event of bolts breakage, stripped threads, busted knuckles, or general mishaps that commonly occur with this type of work"

Respectfully submitted by tjbeggs, Rubberducks personal gratis lawyer


that was all due to a very interesting post a while back. if you have no idea what I am talking about maybe Cody will fill you in!

 

Ya that guy never gave us an update of even took rubberduck up on his offer. Just for referance Luckcline used a stock 17* pump on his monster til 500 hp. It is much more efficient than the 15*

 

Would I benefit from one at this point with stock squirters? I don't plan to upgrade them unless they fail. Right now I'm concentrating on getting my Bronco back on the trail for a summer of wheelin fun.

BTW RubberDuck, great writeup on your install!

 

No stock injectors will run fine with your stock pump.