2007 Yukon Denali Build (This got outta hand really quick...)

[67RS427]

That evo race was predictable. Still awesome.

I actually think I would have had them if I launched like I was earlier in the day. The higher intake temps and reduced timing certainly didn't help me at all...

 

[Big Mama]

The power is unreal but I gotta know why your dash isn’t cracked.

 

[67RS427]

The power is unreal but I gotta know why your dash isn’t cracked.

Lol, that's a really good questions and I really don't know the answer. I can tell you that it has been garage kept for it's entire life and doesn't sit out in the sun too much so that probably helps. No crack at all though...

As for the power, I'm very happy with how it's been performing. I was pretty disappointed with the 720S/Evo race but after looking at the data logs, I noticed that it was running very lean and pulling timing like crazy. I was running it with just under half a tank of gas and the secondary fuel pump kicks in off a 7psi Hobbs switch. Right after launch, my fuel pressure dropped and I was running about 30% lean. I'm lucky I didn't blow the thing up but it makes me really want a rematch. I think with a full tank of gas, good launch and cooler temps with my chiller, those "super cars" would have been left in the dust. Oh well, maybe next time... Time to fabricate a custom fuel tank for this thing and start running drag radials.

 

[Big Mama]

One thing’s for sure. They went home with a new appreciation for, and will think twice about, the next time they pull up next to a gmt900 and that’s the biggest win of all. I have the same rig so I’ll be looking for thumbs ups.

 

[Onebad1983]

I didn’t really catch a damn thing, my passenger was an idiot and couldn't even turn on the GoPro on his side. Here’s a few short ones and one some kid took of me launching at a light.

Nothing special here...

Snap, Crackle, Pop

McLaren 720s vs Lamborghini Huracan Evo - I had a crap launch because I tried to leave with boost and also had just blown up my A/C compressor which chills my blower. ECU was pulling a ton of timing on this run so I was down almost 100hp. We ran again from a roll and I did much better but did not get it on video unfortunately. I put air in the helper bags for the first time and it was hooking up great all day, not sure why I had to try and leave with boost on this one, stupid mistake.

Good clean race with a modded G8 GXP, again, camera man was an idiot...

There was so much more action I wish I could have caught on camera. I took out a Porsche GT3 from a dig and a roll, gapped a Demon Challenger, totally spanked a 6th Gen Camaro SS with a built 427/6 Speed and so much more. I even did a little pull with a C8 Corvette from a roll and pulled on him too. I'll look through the rest of my footage and see what else I can post.

There is only one question I have from all of this. How many people did you surprise with the 2 step?

 

[67RS427]

There is only one question I have from all of this. How many people did you surprise with the 2 step?

Surprise? Lol, I scared the crap out of several people... I can say that the muffler seems to have broken in after all the miles I put on the truck because it's much louder in general. As you can hear in a few of the videos, it burbles and pops on deceleration a lot. It's addicting for sure and sounds amazing in person.

 

[Onebad1983]

Surprise? Lol, I scared the crap out of several people... I can say that the muffler seems to have broken in after all the miles I put on the truck because it's much louder in general. As you can hear in a few of the videos, it burbles and pops on deceleration a lot. It's addicting for sure and sounds amazing in person.

Have you made any more changes to the 2 step? Does it shoot bigger fireballs?

 

[67RS427]

Have you made any more changes to the 2 step? Does it shoot bigger fireballs?

I really haven’t messed with it much. I think it’s set at 3,500 or 3,800rpm or something like that. It shoots pretty good flames. I’ve thought about turning it up but It’s really ******* the tensioners. I’ll have to get a video under the hood one day, it’s pretty violent lol. I need to replace a tensioner so maybe I’ll do it before I do that.

 

[Tonyrodz]

Love your ride !!

 

[Sam Harris]

I really haven’t messed with it much. I think it’s set at 3,500 or 3,800rpm or something like that. It shoots pretty good flames. I’ve thought about turning it up but It’s really ******* the tensioners. I’ll have to get a video under the hood one day, it’s pretty violent lol. I need to replace a tensioner so maybe I’ll do it before I do that.

I don’t recall seeing any 2-step flame videos... did I miss them? [emoji3166]

 

[67RS427]

I don’t recall seeing any 2-step flame videos... did I miss them? [emoji3166]

I don't really have any new videos of it shooting flames... Here are two old ones before I put the 402" motor and heads in it. It's even better now running on E85.

 

[Tonyrodz]

I don't really have any new videos of it shooting flames... Here are two old ones before I put the 402" motor and heads in it. It's even better now running on E85.

Love that shit! Sounded great too.

 

[Sam Harris]

I don't really have any new videos of it shooting flames... Here are two old ones before I put the 402" motor and heads in it. It's even better now running on E85.

Hell yeah brother!!![emoji631][emoji631][emoji631][emoji631]

 

[ls1frc]

I don't think I posted pics of new upper grill with lower installed. Also removed chrome mirror covers and installed body color ones. Chrome trim on hood also blacked out and chrome bug deflector removed and blacked out. Might reinstall deflector because they chipped the paint on the hood with the mounting clips.

View attachment 182730 View attachment 182731 View attachment 182732

What grill combo is this?

 

[67RS427]

What grill combo is this?

Not 100% sure honestly... I bought it on eBay and my purchase history doesn't go back that far. There are only a few that look like that so you should be able to find it or one similar.

 

[ls1frc]

Too much to list really, you should browse through the thread...

A short version of my project: 2007 Yukon Denali, Built/Forged 402" Iron Block, Lunati crank/rods, Wiseco Pistons, BTR Stage 3 PDS Cam, Brodix 6 Bolt CNC Heads, Fully ported LSA Blower, ZL1 Lid reinforced, 2.5" Upper/10% 9.1" ATI Lower (14.5-15psi), Kooks 1 7/8" Headers, Gutted Kooks Y Pipe, 1000cc FIC Injectors (I have ID1300x2 injectors going on in the next week or two), running pump E85, Mishimoto Radiator, HD2500 truck fans, Custom Blower Chiller, QA1 Double Adjustable Coil Overs front and QA1 Double Adjustable shocks in the rear, Front Drop Spindles, Rear 4-6" Drop springs with bags. Transfer case was original and just rebuilt a few weeks ago along with another fresh transmission build (broke an input shaft). Running a Circle D 3k Stall Triple Disc convertor. Self tuned with HP Tuners. Front diff is rebuilt to OEM spec, rear 10 bolt Diff has a TruTrac. Best ET was an 11.77 @ 124mph and that was in November here in Michigan on SNOW TIRES spinning all 4. Planning on stepping down to a 20" light weight wheel and running drag radials on all 4. I have 16" Wilwood brakes waiting to go on sometime this month. Full 5" intake and MAF only tune right now.

Honestly, probably forgetting a lot... Probably making just over 1,000hp but I will get it on the dyno for a solid number.



My IAT cruising around has gone up slightly since I removed my heat exchanger fans. I'm also running a very thick exchanger that doesn't allow a lot of air flow at low speeds. Without the chiller, I see 30* above ambient right now. Usually only 15* when it's warmer out. With the A/C Chiller turned on, I see temps right at ambient or 15-20* below typically. Temps don't go above 115* after a 1/4 mile run and quickly recover to 15-20* below. Before my chiller, I would see 160-200 degrees on a long hard freeway pull. No longer an issue and the chiller will be working better when I get my A/C problems worked out (currently have a blockage or bad compressor).

I'm running MAF only because it works really well for me. I don't have any drivability issues and I don't need to make big changes when the temp changes or for altitude. I have considered getting my speed density dialed in so I can run a blend but I do not plan on getting rid of my MAF, no reason.

I use a Granatelli 103mm TB now and LOVE it... No issues like I had with my NW 102mm unit. You will notice more power/performance if you upgrade, ANY restriction before the TB is lost power on these blowers. Get the biggest intake you can fit and get a Granatelli 103mm on there. They are cheaper than the NW units.

I feel the same way about the MAF only tuning. I never noticed a lick of a difference when running blended mode. There are people on HPTuners who will censure you for not tuning SD and run mixed. I've just run MAF only and all my vehicles run nearly as smooth as stock even with cams.

My opinion is I will never get my VE table even close to accurate unless I rent a load bearing dyno and can hold each cell in each column. So why do it if it's not going to be precise? Seems foolish to me when I can get my MAF dialed in perfectly even on the street.

 

[ls1frc]

My goal before summer is over is to run a 10.9 qtr... I don't think it'll be a problem on E85 if I can get this thing to hook. If I can't get faster than an 11.5 or so I'll switch out these 90LB 22" wheels/tires for a lightweight set of 18" wheels with drag radials. It would save me 30-40 lbs of rotating mass at each corner, that should certainly be enough.

I watch some of this dudes videos with the 2000 hp escalade. He mentioned he switched his AWD to a 4x4 because the AWD works by pulsing the ABS. I assume it made a big difference in is launches. I really don't know if it's true or not just figured I'd pass along.

 

[67RS427]

I watch some of this dudes videos with the 2000 hp escalade. He mentioned he switched his AWD to a 4x4 because the AWD works by pulsing the ABS. I assume it made a big difference in is launches. I really don't know if it's true or not just figured I'd pass along.

I’ve been running mine for a few years now with the ABS fuse pulled, problem solved. I don’t have any issues at all.

 

[ls1frc]

I’ve been running mine for a few years now with the ABS fuse pulled, problem solved. I don’t have any issues at all.

Cool. In that video I linked, he says he did the same thing but all that happened is he'd do 1 wheel burnouts down the track so IDK.

 

[67RS427]

Cool. In that video I linked, he says he did the same thing but all that happened is he'd do 1 wheel burnouts down the track so IDK.

That’s more due to the open front differential which is the same with a 4x4 transfer case. He only solved the issue by getting a slick on there and shocks to limit rebound and compression during weight transfer on launch.