Cornell's 2007 GMC Derpamax Build Thread

[Cornell]

Most of you guys know I found a mint 2007 Duramax with 22k miles on it in California. It's been a little over six months since I first heard about this truck and I finally had it delivered today.

:favorites37:

2007 Duramax Delivery - YouTube

Short walk around - YouTube

DSLR was dead so all the pictures/videos are from my GoPro

Easily the cleanest used truck I've ever seen. The frame looks like my Dad's 2012 as far as cleanliness goes.

Plans:

Cosmetic:

Debadge except for duramax/allison badge done
Colormatched mirrors tailgate handle/bezel done
Raise front bumper 2 1/4" done
Cognito 4-6" NTBD with Cognito UCA's and Bilstein 5100's done
Cognito support braces done
Cognito HD tie rods done
22x10.5" Chrome BMF Novakanes done
285/55/22 Trail Grapplers done
1.5" wheel spacers done - decided to get 2" instead
LED's all around inside and out done
Clear corners and clear stock lights or Denali lights (I have a spare set of non cleared Denali's but am too lazy to open them up) done
Esky/Denali Handles door handles done
02 HD Hood
35% shield with 5% brow, 15% on other 5
Not sure about suede with this interior color

Engine:
68mm FPE Cheetah
Full EGR Delete
Built trans
lift pump
EFILive tuning
injectors/higher flowing CP3 eventually
PCV Reroute
3" Downpipe
5" MBRP exhaust

Sound/Video:
Has a Parrot BT system
Has screens in the headrests
Some Nav unit ...have a Pioneer 910bt in my 06 and really like that, may go with a z11xx series though
Haven't decided which way I want to go for subs.... behind the seat/under the seat or if I should get tahoe buckets and build a rear center console. Most likely 2 10's behind/under or a 12" if I do a center console build. I don't want it to be too bulky
may sound deaden it with mat and foam.

I'll keep this updated





This truck may push me to get a shitbox for the winter. I kept the 06 pretty good. POR15 on the frame and no rust on the body.

First wash

Then I cut the shit out of my fingers somehow

Done

It's been seen a bunch of times, not too exciting kay2:

halogen vs. 5k vs 6k leds

 

[Cornell]

Didn't rehearse video.
Didn't plan any of it as you can tell.

Starting out - YouTube

I don't know what to name this - YouTube

Towing Mirrors and Staying Crunchy - YouTube

Sanding and Preping for lift - YouTube

Wat - YouTube

Some progress - YouTube

Before the lift

Dem rods

Braces

Where I am now

 

[Cornell]

I need an alignment but I'll just wait till the UCAs show up so I don't piss away 60 bucks

Going to pick up the painted plastics tomorrow.

edit: still need rear spacers. I have a spare set of 2" but I was thinking about doing 2.5" rears now... What think?

Maui onion potato chips.... and a GMC - YouTube

Leds CSB YUNO - YouTube

1. Converted the DRLs to turns today
2. Wired up my front footwell LED's
3. Modified stock signal relay to stop hyperflash

Used 2 6" 5k led strips per side in the front, was just going to use one but liked this better. I need to order more for the rear now.

I always wrap the base of the bulb and the top of the socket once around with electricians tape so it holds the switchback in place... Mine always sagged and stop working the way they should and this solved that. Plus it hides the socket color when installed.

All wrapped back up

Inside:

tapped wire so they work the way they should

Modifying the stock relay:

Remove 2 7mm screws from bottom of panel.

I "rock" module back and forth to get it out or it can be a pain

 

[Cornell]

Apart: I use the paint can opener in the picture to open the module up... its easier than a screwdriver.

Figured those pictures would help people. I use a tweezers to knick the little leg off.

edit: video will be up later, front isn't back together yet.


Interior and Exterior LEDS - YouTube

Don't have the big pass side mirror piece. There was a run in the clear and they weren't happy with how wetsanding it came out so they are re-clearing it tonight.


4 middle mounting points for the front bumper?
I didn't want to cut up my fresh painted valence so I got the hack saw out with some Torch Milwaukee Blades and went to town

 

[Cornell]

UCA's still haven't shown up. Said they shipped out Monday of this week.


Got my 2" wheel spacers today that I ordered on Wednesday of this week


2" wheel spacers - YouTube

Edit: and for whoever it was that asked overall height... it is 1/2" under 7' to the top of the shark fin

Photo Bomb

 

[Cornell]

camber is fixed, might even be a little on the positive side right now

or this

or dis

maybe dis

all white srsly looks the best





It's all zip-tied back and I checked the clearance on it too.

When I had the Dodge 17's on the 06 they have a crazy backspacing and rubbed through the ABS wire on the pass side so I know how that goes. Replacing an ABS sensor is like doing a wheel bearing by the time you get done.

BTW did you have to open up the balljoint hole on the spindle at all with the 9/16" drill bit? My balloints for the Cognito UCA's seated fine but the directions said I might have to do that because the new BJ is Standard and the OEM one is metric. Never had any issues with my 06 and its UCA's.

Just wonderin'

Stuffs ordered tonight:

DSP5 Switch | DURAMAXTUNER.COM

LBZ / LMM / LML 3" ProFlow Boost Tube - Creatures of the Night Performance

LBZ / LMM 3" ProFlow Short Bridge - Creatures of the Night Performance

All Season Down Pipe - $189.00 : All Season Diesel Performance, Your Duramax diesel performance headquarters by Tony Burkhard owner of the Dirty Hooker

 

[Cornell]

Got this stuff today

edit: that calendar is FTW btw

Truck was aligned:

I modified the up pipe myself. Cut off, sandblasted it, buddy of mine welded it for me. Easier, cheaper and less messing around to buy one for 100 bucks and ship back a core. If this fails I'll try a different route.

High temp paint

Got my intake bridge and boost tube today

Plan on doing it all tomorrow, it snowed though so I may have to go plowing. We'll see.

intake bridge and boost tube are pc'ed black

Also a buddy of mine had a pair of Alpine PDX 1.1000's that he gave to me in exchange for pulling his injectors and installing them. Not sure if I want them or not. He had 2 12" JL W7's for them but they were stolen out of his garage. Did want those.


Worked on the swap for about 3 hours today, I can't believe the amount of oil and soot it has for having only this little amount of miles.

Also I jacked My IAT temp sensor somehow when I took the mouthpiece off kay2:

Never had an issue before, it must have caught on the PCV tube or something...trying to find one now.

Hard part is done. Only thing left to do now is loosen the 3 17mm bolts that hold the turbo in place and remove the EGR cooler and I think that has 3 14mm bolts IIRC. I need to grab some heater hose for my PCV reroute and to bypass the EGR log.

Should be all back together tomorrow easily. Also I almost forgot I have an LML drivers side manifold to drop in too.

I don't want to go over 650hp/1100tq

LML manifold

Y bridge

 

[Cornell]

LBZ 68mm Cheetah, All Season 3" dp, stock exhaust - YouTube

Put some 11+ Allison/Duramax Badges on.

Fishbowl vill be long gone termorrer.

No emblem

CSB

before:

after:

other eye candy:

tints:

Mine:

5% over factory rear 3 and sun roof
14% on front two
27% on shield with 5% brow

Denali:

27% front two
5% brow

Ram:

14% front two
50% shield
5% brow

Cayenne

14% front two to match the rest

 

[Cornell]

Quick pic of the engine bay

Clean pics:

Dat Porsche

Dat Dually

t's supposed to snow 12-16" tomorrow so I brought the T770 to one of the places we plow just in case.

I need a drop hitch.

Bobcat weighs 11k and trailer is about 4k

They are drying right now. Not a fan of testors though, the spray tips clog really easily.

 

[Cornell]

Gots some little stuff today. Copper tubing kit for the drive pressure setup.

And angle rings so I can start making my own gauge pod in the center console.

Started mah gauge pod today. Never really worked with bondo before so I think it came out alright. I still need do a couple coats of high build primer and do a little more sanding.

Also need to dremel out the stuff I don't need anymore behind.

Probably going to plasti-dip it.

I filled it all with bondo lol. We'll see how it holds up. I ordered another piece so I can do it again. Might do it a bit different next time. And if I do it again I will probably use fiberglass resin to fill that spot a bit more so I don't use so much bondo.

I drilled into it today for a 12v outlet and it didn't crack. The cutouts around the hole are so the outlet stays in place. I plati-dipped it and it looks pretty close to factory.

lol.

wish it sounded as awesome in the video as it did in person. started the truck and gave a couple revs with just the pass manifold on.

Duramax drive pressure, and running off the manifolds - YouTube





Autometer Elite Gauges - YouTube


ordered a 4" frontpipe, 4" DMH cutout, 4" flowtech. A guy on DerpamaxForum has a 7" Aussie cut stack for sale and I PM'ed him 3 days ago about it but he never gets on so I must wait.

Dirty

 

[Cornell]

Cheetah Duramax FPE 68mm #1 - YouTube

FPE 68mm Cheetah 2007 GMC LBZ Duramax #2 - YouTube

More 68mm Cheetah #3 - YouTube




irst tire shine tonight, and Adam's VRT

#winning

 

[Juan!]

I came several times. Truck is beautiful.

 

[Craig]

Do you mix the VRT 50/50 with water Cornell, or strictly VRT?

 

[Cornell]

Strictly VRT, let it sit for a little while then wipe it off.

I use a Stoners aerosol can tire dressing because troll grapplers are a PITA to put tire shine on

 

[Craig]

Yeah they are I just used an entire can on mine.

 

[fortplainman]

your truck is sex

 

[Mike]

I prefer CoverAll for my tires. And I normally use the Lucas Slickmist for exterior, wheels, and interior.


I love your fucking truck Cornell. DFW

 

[Cornell]

HD hood is going on tomorrow

 

[Jordan]

Fuck yes, going to look so good with HD hood.

 

[Craig]

Hell yeah! Is it on yet???