LBZ reg+ ported fitting

TrentNell

Finally underway !!!!!
Jul 7, 2008
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slc tuah
I gained an extra 1k psi on rail pressure wth the LBZ reg , so ya its worth it , never have done the rail fittings though , its a good idea too though !
 

custom8726

Active member
Feb 25, 2008
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Upstate N.Y
Rail fitting on the drivers side is pretty easy, The passenger side is a bit of a PITA because of all the stuff you need to pull off to get to it... Unless you are talking about the CP3 fitting that gets dremeled out? If so there is a couple good threads with pics on here how to do that.
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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609 New Jersey
no i mean the rail fittings.....so trent i heard that reg was a mofo to get to?....



btw didnt know about dremeling anything but heck while im in there ill check it out

also trent did you get the extra 1k rail just becuase or by commanding 180mpa?
 
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custom8726

Active member
Feb 25, 2008
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no i mean the rail fittings.....so trent i heard that reg was a mofo to get to?....



btw didnt know about dremeling anything but heck while im in there ill check it out

also trent did you get the extra 1k rail just becuase or by commanding 180mpa?

I would not waste the time drilling out the passenger side rail fitting but the drivers side is easy and worth while IMO.... There are a couple DIY mods you can do to the CP3, but I have never done them myself. I do know from reading about it there is a very small margin for screw ups, so I would take the time and look up the pics and process on here before you just start dremeling away:hug: I also believe you need to ajust your tuning to switch from an LLY to LBZ reg........ Which reminds me I have a brand new LMM/LBZ regulater sitting here if your looking for one? I also could use a LLY regulater if you want to get rid of yours...
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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I would not waste the time drilling out the passenger side rail fitting but the drivers side is easy and worth while IMO.... There are a couple DIY mods you can do to the CP3, but I have never done them myself. I do know from reading about it there is a very small margin for screw ups, so I would take the time and look up the pics and process on here before you just start dremeling away:hug: I also believe you need to ajust your tuning to switch from an LLY to LBZ reg........ Which reminds me I have a brand new LMM/LBZ regulater sitting here if your looking for one? I also could use a LLY regulater if you want to get rid of yours...

hmm very interesting. well i want to find a detailed write up before i decide 100% to do this and it wont be till after TS that way i wont be screwed if i mess up. but if i do it we can def work something out.

out of curiosity though, why would you need a lly regulator and not a lbz one? something to do with dual pumps?
 

TrentNell

Finally underway !!!!!
Jul 7, 2008
7,543
0
0
44
slc tuah
no i mean the rail fittings.....so trent i heard that reg was a mofo to get to?....



btw didnt know about dremeling anything but heck while im in there ill check it out

also trent did you get the extra 1k rail just becuase or by commanding 180mpa?

I dont think its too bad of a job , but it will take around 3-5 hours depending on how good wrench you are . The details on the rail psi gain are , with a 3150 pulse tune i was holding 21500 psi rail pressure , and commanding more obviously , after the reg swap i was running a 3220 pulse and holding 22600 .
 
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Redbowties88

Sideways > Straight ;)
Aug 24, 2009
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sweet, well sadly im not the greatest mechanic and i dont have the greatest selection of tools.

can anyone point me in the direction of a good DIY writeup on this?
 

05_LLY

Out-A-Time
Aug 7, 2006
1,756
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36
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Norvelt, PA
Regulator changes are a PITA, easier on a lly that a lb7 though IMO! Very worth the change IMO too, the rail fitings, id do the drivers side, the pass side invloves a lot of tear down to get to. Going to a wicked regulator on corries truck was good for almost 2000psi with the same shot size.
 
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custom8726

Active member
Feb 25, 2008
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Upstate N.Y
hmm very interesting. well i want to find a detailed write up before i decide 100% to do this and it wont be till after TS that way i wont be screwed if i mess up. but if i do it we can def work something out.

out of curiosity though, why would you need a lly regulator and not a lbz one? something to do with dual pumps?

I bought a new LMM CP3 to run in a dual CP3 set-up with my stock LLY in the valley. I am thinking of just putting a LLY regulater on the new LMM pump and bolting it on with the rest of the PPE kit, making it easier on me vs digging out the stock pump and putting a LBZ/LMM regulater on it. Clear as mud:confused::D
 

dmaxfireman

'Can do' kind of guy
Apr 8, 2007
2,329
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CT
i have a spare lbz cp3 i think i am going to try this on.... anybody have numbers before and after on an lbz?
 

SDP

AKA Dmax15
Dec 20, 2008
261
0
16
Port Angeles, WA
Took me about 2hrs to swap my LBZ reg out on my LB7. Its pretty self explanitory, just move a few things out of the way so that you can get to it. Hope you like working in tight spaces!
 

wdino73

Member
Sep 25, 2009
735
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55
Versailles, Ky
It's really not that bad, but I've been in mine several times so I've got it down, but If u have never done it, It can be a little intimidating, take your time an main thing isn't to panic,LOL
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,824
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Mid Michigan
Modded LB7 reg helped raise rail roughly 1500-2000psi on my truck, so yeah, its worth it.

Replacing it is a complete PITA.
 

paint94979

Beer Nazi
Sep 18, 2006
11,715
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any idea off hand what they run? and what mpa ill be able to command?

190mpa IIRC they are right around 200$ and say you modify your own you could go too big and ruin it or not big enough and then you might not see any gain. Shane is the best there is when dealing with modifying these CP3's and their components.