JMoore,
Were you able to get the HPOP swapped out? I've got an 03 that won't start and believe it's the HPOP but have a salvageable pump from an 05 engine I could use if this works. lmk

 

Worked fine. Here is a few pictures of another truck I'm building for a friend. You'll need the hpop and cover and the new style hpo rails and icp if you use the new pump because it doesn't have the icp fitting on the housing. Only the ipr. The blocks did not change only component locations. I like the later style factory pumps they really seem to hold up better it just requires the updated branch tubes as shown.

 

thanks for the reply, but the pics came up as jibberish. May be my settings or something. When you get a chance can you send to the email below or text to the cell #. I was reading up elsewhere and someone said you'd have to snake the branch tubes out of the heads??? I just put in injectors but only had to unbolt oil rail so I could move it a little. (I'm sure you know). I've got a complete 05 engine that was hydro locked, so should have all the parts. Pics if you can send pls....gonna be a long weekend, could afford not to have to get an HPOP if I have one that will work. any idea what fails, can i just swap actual pump?
Thanks,
Joe

jlove4159@hotmail.com
325-829-0544

 

What he said! I'm very curious about this swap. Will the newer ICP talk to the 03 computer? I know the FICMs are interchangable from 03-07, but that's about all I know electric wise on these trucks. "Damn it, Jim! I'm a doctor not an electrician!"

Where would I find this cover, rails and such? Is this where you would do the HPOP STC mod guys here are talking about that is 05 and up? There aren't many wrecking yards here in northern Nevada, and they don't have any diesels in them.

 

I robbed my ICP I'm using now from this 05 engine I have an put it on the one in the truck, an 03. It "seems" to communicate fine, but says ICP input is low on my cheapy scanner. Still need to test and make sure I'm not getting the 500psi before I pull the HPOP, but from what I've read they're notorious in the early years for failure.

 

I think The only difference in the ICPs is because the location, closer to the pump might show more presure than at valve cover, not sure

 

I have two different part numbers for the 03/04 ICP and the 05+ ICP.

03/early 04 ICP (pre 9/23/03): 3C3Z-9F838-EA
04 (post 9/23/03) 05-07: 4C3Z-9F838-AA

Not exactly sure what it means, but there are two different versions...

 

Well truck has been finished and i havent posted any updates. But the branch tubes will have to be changed with the heads off. You will need a later style hpop and cover along with updated icp sensor relocation. The owner of the truck says this has been by far the strongest he's ever seen this truck and its the best it starts since he had it bored .030 over and started running hot tunes. So i highly recommend anyone that has the engine out or heads off and trans out to give it a try.

 

Hi Jmoore, i'm in the middle of swapping engines. I had a 2006 which had roller pins lifter damage. i got a 2004 engine in good shape. I was comparing the hpop of the 2004 and 2006 and they look like they are different. My question is can i put the 2006 hpop, which is almost new, into the 2004 block?
Thanks

 

yes. but you will need to swap the branch tubes while the engine is out. it will require pulling the heads and rear cover and swapping them. once swapped the hpop's will swap right out. you will need the hpop cover and if you will look at the cover it only has the ipr valve in the cover the icp valve has been relocated to the front passenger side hpo rail. so it will take a little parts swapping but if the engine is out of the truck i highly recommend it. any time from this point on i am going to recommend just making the swap if i have the engine out and heads off for any reason. the last truck i swapped the pump on is loving it. says it is starting better than it ever has and seems to have alot more response when he is running his tunes i'm not driving the truck so i don't know just going off of customer feedback.