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FoxProDenali's 2007 Sierra - Build, Show, Tell

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FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 10 2018, 7:56pm

Not so much of a build thread as most has already been "modded" or built, so I suppose what follows is more of a show 'n tell.

I bought my truck used with 160k in the fall of 2016. It now as 185K on it.

This is what it used to look like:
Image

Here it is today (dirty):
Imageimage url upload

More to come....
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
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FoxProDenali
Combustion on 6 pistons [L2]
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby nealinator » May 11 2018, 3:47pm

Cool. Glad you started this. Look forward to seeing the details. Those rims are very unique...have not seen any like it before.
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Nealinator's 5.3L 4x4 Z71 All Terrain   180,020 miles
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 11 2018, 7:38pm

nealinator wrote:Cool. Glad you started this. Look forward to seeing the details. Those rims are very unique...have not seen any like it before.


Thanks. They're Moto Metal something or other (made in China by Chinese people). Total PITA to keep from not looking like ****, but I've been using both WD40 and Cover All to combat that.
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
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Location: St Louis Park, MN
Year: 2007
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 11 2018, 7:50pm

Here's a rundown on the front.

Hard to see from the first pic above, but the previous owner had a Westin deer smasher guard on it which meant the geniuses that installed it cut holes in the factory grill.

Image

The first thing I did was take that thing off and sell it on CL. Then used the funds to buy the black one as seen ($72 on Amazon after months of patience).

Then I wrapped the upper trim piece and lower grill in Vvivid vinyl to color match.

There was also a nice rust spot on the driver's front edge of the hood, which I ground down, repainted and then covered with an AVS Aeroskin to hide it.

The original GMC badge was toast after 10 years and the "M" actually fell out one day, so I bought a new one and painted it as well as the tow hooks. Turns out a $3 can of "Burgundy" Rustoleum was about as close to "GMC red" as I could find.

Headlights are Recon with Beamtech LED's. Forgot what the floods are; just some cheap $20 plug n plays you can find on Amazon. It's mainly for the "cool factor" as I rarely drive at night
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
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Year: 2007
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 11 2018, 8:18pm

If you've been on the fence about using a silicone-based paint sealant, then this is a visual for you.

This is rainfall on a fresh coat of Wolfgang 3.0. No, it's not "hydrophopic" in the sense that nothing will ever stick to it - like water, dirt, snow, etc - but it really does last a long time. I'm anal and wax over it, but it really is worth the investment.

Image
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
Years of membership: 2 years of membership2 years of membership
Location: St Louis Park, MN
Year: 2007
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Variant: Denali
Group Membership:
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 15 2018, 8:28pm

But what about the intake? Surely that beast sucks the coldest of the cold air and has been properly modified to do so? The only thing it's missing is a fan!!! :lol:

I bought some cheap parts from the hardware store, eBay and Amazon as well as a used air box and went to town.

I really hated the old plastic monster manifold, plus without a catch can it was getting blasted with oil mist and collecting in the low points and pods. Screw that thing.

Image

There are two 4" 90* elbows that fit together and source air from behind the headlight. The fender hole is sealed off because the truck didn't like it open (made a weird clicking noise on accel).

To do that, I had to remove the tray the air box sits on and bolt it directly to the truck. It actually fits that cut out perfectly. Go figure.

Image

I just replaced the factory PCV breather with 3/8" tubing and plugged it in after the MAF.

No it didn't give me any more power.
No it's not louder.
No I didn't gain any MPG's.

That is all.
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
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Location: St Louis Park, MN
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 17 2018, 7:23pm

On to the exhaust.

The truck already had a Corsa "Performance" (PN 14515) cat back on it, so all I needed was headers.

I was pretty set on buying a cheap set of Speed Engineering for $300 but the buyer was a flake and it never went down.

Then a month or so ago another member put his Kooks set from his 2012 Silverado up so I jumped on it. The price was good but it was the wrong Y-pipe for my truck, so I had a local muffler shop mate it up to the Corsa.

Here's a before (stock Y on the right) and after with the Kooks. I reused the stock end of the Y, obviously.

Image

Image

The fit and finish is fabulous on the headers. They slid right in with no clearance issues other than the power run from the battery to the starter on the passengers side. That had to be re-wrapped with foil tape and moved over a bit. Also the second 02 sensor on that side was a bit short but that just involves messing with the anchor on the frame a bit.

The Y-pipe did find it's final resting spot on the top of the tranny crossmember but I solved that with a couple shorter hangers and now it's clear by a good 3/8".

All clear on the driver's side. Lots of mess to work around to get to get the bolts torqued down but no steering column issues or drive shaft.
Image

The only time I'd say the truck is too loud is on a cold start and it's early in the AM. No, it's not an annoying "wake the neighbors" type of cackle, but it's aggressive. After that, it's pretty much like stock.

The first thing I noticed is how easy the truck cruised on the hwy. Quiet and effortless, almost like the wind was pushing me from behind. Since winter broke, I've been getting about 13 MPG in the city. In the first week with the Kooks, I averaged 14.8 MPG. Really unexpected and very welcomed improvement.

The second thing, of course, is the sound. Mother of god, when I come out of the end of a cloverleaf to merge on the hwy and kick it down into 3rd, the growl and the push back into the seat now is just silly. Once the tachometer hits about 2.5K it goes straight to 5k in a HURRY. This isn't burying the pedal, either...it's just really opening it up. I haven't even ran it WOT yet. With just the Corsa, you get a little extra rip and kind of a sophomoric fart of an exhaust sound which is barely louder than the engine. With the Kooks, it's almost stock car. I've given a couple buddies rides and they both said the same thing, "dude did you put a NASCAR engine in this bitch?!"

Obligatory cold start video....
https://www.youtube.com/watch?v=bDoiCcshlrs
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
Years of membership: 2 years of membership2 years of membership
Location: St Louis Park, MN
Year: 2007
Make/Model: GMC Sierra
Variant: Denali
Group Membership:
Registered users

Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby silentbravo » May 17 2018, 9:21pm

Your feedback makes me want to get LT's even more. Nice truck
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby nealinator » May 17 2018, 9:28pm

My next truck needs that 6.2! Sounds great for sure.
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Nealinator's 5.3L 4x4 Z71 All Terrain   180,020 miles
AMP Power Steps - Retrax Pro Cover - 305/50R20 - Airaid MIT - Mobil 1
Borla Exhaust - Eonon GA7180 - Custom Catch Can - Bilstein 5100's - $ Cost $ - DiabLew Tune
User avatar
nealinator
Shifting into Sixth Gear! [L3]
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Posts: 13758
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Images: 30
Joined: Mar 02 2015, 2:35pm
Years of membership: 5 years of membership5 years of membership5 years of membership5 years of membership5 years of membership
Location: Katy, TX
Year: 2010
Make/Model: GMC Sierra
Variant: All Terrain
Extra Info: 1500 5.3L 4x4 Z71
Group Membership:
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Re: FoxProDenali's 2007 Sierra - Build, Show, Tell

Postby FoxProDenali [OP] » May 18 2018, 3:17pm

Before buying my half ton, I test drove a Canyon with the 5.3L in it. That thing could really boogie. Would be fun to do the same bolt ons on that lil guy.

Amazing how much heavier the stock manifolds and Y are vs the SS Kooks. Probably cut that weight in half.

Also, as far as exhaust sound goes, my neighbor bought one of those new R** Rebel’s. It sounds great on a cold start, but nothing like mine. It’s like they had to load the truck with as much ABS plastic as they could to save enough money to spend on tuning that exhaust system.
2007 Sierra Denali 1500
Kooks|Corsa|Amp Research|DiabLew Tune|Vitesse
Build Thread: FoxProDenali's 2007 Sierra - Build, Show, Tell
Original Poster
FoxProDenali
Combustion on 6 pistons [L2]
Combustion on 6 pistons [L2]
Posts: 698
Topics: 26
Joined: May 05 2017, 1:06am
Years of membership: 2 years of membership2 years of membership
Location: St Louis Park, MN
Year: 2007
Make/Model: GMC Sierra
Variant: Denali
Group Membership:
Registered users
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