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

[Tonyrodz]

Wow, you really do some quality work. Looks fantastic. I can't wait to see a vid of it running. Also, your patience should be commended.

 

[00'BlueSteel]

Looks amazing, can’t wait to see some vids and hear that sweet sweet whine.

 

[67RS427]

Wow, you really do some quality work. Looks fantastic. I can't wait to see a vid of it running. Also, your patience should be commended.

Thank you, I appreciate it... I'm generally very patient and always took the "do it once and do it right" approach when working on my cars/trucks. Unfortunately I've had some bad luck on this last build but I've been trying to stay positive and keep reminding myself that it will all be worth it in the end. I lost a full week of testing and tuning because that damn accessory drive.

You know it's really bad when it takes longer to assemble a "bolt on kit" than the time it took me to build the motor and R&R all the drivetrain components. It's frustrating to say the least but it will be worth it in the end (that's what I keep telling myself). It just really sucks because this is my daily driver. I was driving my dogs Jeep Cherokee Sport but unfortunately it's a 2000 and the cylinder head cracked on me halfway through this build. I was lucky to have my brothers car to drive for a few weeks but it was a lease that was due back last week. He's the one with the Audi RS5 and doesn't understand all the work I've put in to this thing. He kept telling me to sell it and asked me what color GMC Terrain I wanted lmao.... I had one of those for my ex wife and it was a Denali and I still hated it. I love this truck and I can't wait to blow the doors off of his $95k Audi. That will be priceless and totally worth all the ******** I've been through with this truck.

I'm sitting here waiting for the mail to arrive and will get this all back together tonight. Hopefully if all goes well I can post a video of the first start up tonight or tomorrow. Either way it will be back on the road this week and I can take off my snow tires lmao...

Looks amazing, can’t wait to see some vids and hear that sweet sweet whine.

Thanks, you and me both. It should have a hell of a whine now that I'm spinning the blower even faster. First build it was about 17k RPM and now that I've decided to swap to a 9.1" 10% lower it will be closer to 25k RPM. It's gonna sound wicked!

 

[randeez]

awesome man...
im a little worried for your LSA blower though

any plans to step it up to a 2300 or try and find a new 2650?

 

[67RS427]

awesome man...
im a little worried for your LSA blower though

any plans to step it up to a 2300 or try and find a new 2650?

Eventually I will probably upgrade but I planned this build right at the edge of critical limits of the blower. It's got new bearings now and I've seen plenty of guys spinning them even faster than I will be. I'm only shifting at 6,800 rpm, some guys run up to 7,200-7,800 with more aggressive pulley combos. Heat is what kills these things and that's why I added such a big ice box and heat exchanger. I plan on an interchiller when a local friend is done with development...

If I ever really need more than 850hp or smoke the blower (most guys are making over 700whp with similar and less aggressive combos) I will probably go with a Turbo or 2650 blower. Let's hope that's not an issue lol

 

[00'BlueSteel]

Oh yeah that’s gonna sound like a banshee screaming in the night! Or maybe that will just be your passengers lol

 

[tgui]

Cats were torched? They look ok in the pics. What happened?

 

[about20ninj45]

Eventually I will probably upgrade but I planned this build right at the edge of critical limits of the blower. It's got new bearings now and I've seen plenty of guys spinning them even faster than I will be. I'm only shifting at 6,800 rpm, some guys run up to 7,200-7,800 with more aggressive pulley combos. Heat is what kills these things and that's why I added such a big ice box and heat exchanger. I plan on an interchiller when a local friend is done with development...

If I ever really need more than 850hp or smoke the blower (most guys are making over 700whp with similar and less aggressive combos) I will probably go with a Turbo or 2650 blower. Let's hope that's not an issue lol

Was wondering what happened to this thread, good work and I can't wait to see what it does. As far as the blower screaming, mines pretty quiet and I can barely hear it in the cabin. The LSA is a quiet blower.

 

[95escahoe]

Trucks looking great, love this build


Sent from my iPhone using Tapatalk

 

[67RS427]

My combo is a total of 38% overdrive and 3.6 pulley ratio. Blower will be spinning at 24,480 RPM @ 6,800 RPM...

Here's a good chart that shows combos and boost: https://weaponxmotorsports.com/blog...able-pulley-combos-and-supporting-mods-needed

Cats were torched? They look ok in the pics. What happened?

They weren't torched but one of them started to collapse inside. I have a picture of it but u gotta find it...

Was wondering what happened to this thread, good work and I can't wait to see what it does. As far as the blower screaming, mines pretty quiet and I can barely hear it in the cabin. The LSA is a quiet blower.

True, I can't hear crap over the Kooks 1 7/8" headers and exhaust. Still should have a nice sound from outside the truck.

 

[about20ninj45]

Eventually I will probably upgrade but I planned this build right at the edge of critical limits of the blower. It's got new bearings now and I've seen plenty of guys spinning them even faster than I will be. I'm only shifting at 6,800 rpm, some guys run up to 7,200-7,800 with more aggressive pulley combos. Heat is what kills these things and that's why I added such a big ice box and heat exchanger. I plan on an interchiller when a local friend is done with development...

If I ever really need more than 850hp or smoke the blower (most guys are making over 700whp with similar and less aggressive combos) I will probably go with a Turbo or 2650 blower. Let's hope that's not an issue lol

Who made you icebox? Looks sick. How hard was it for you to rebuild the LSA bearings, was it extensive?

 

[tgui]

...
They weren't torched but one of them started to collapse inside. I have a picture of it but u gotta find it...
...

Thats too bad. I have non-catted headers/ypipe and was considering them. Perhaps I'll stick with my plans for a single vibrant cat after the ypipe. I've read they're more resistant to damage.

Great work BTW!

 

[tgui]

One last thing. What model magnaflow did you get and does it drone?

 

[67RS427]

Who made you icebox? Looks sick. How hard was it for you to rebuild the LSA bearings, was it extensive?

Honestly it wasn't too bad at all. I've never rebuilt a blower and I went through the whole thing pretty quick. Use high quality fasteners and just make a plate with holes for the bolts that sits on the face of the blower when pulling the blower hub. Make sure you get full thread engagement, and grade 10 bolts because they are small. The snout shaft comes out easy if you have a press and bearings come off easy as well. I used a slide hammer with a bearing puller that I modified slightly to get the case bearings out. The hubs press back on really easy and can just be done with a socket and hammer.

I pulled my rotor pack and inspected it and changed the oil. Glad I did because ******** did the oil stink. Smelled like crap in the shop for over a week. I don't think the oil was ever changed when it was rebuilt when I got it. Also I noticed one of the shaft bearings had grease getting pulled into the blower so it must of had a vacuum leak at the snout at some point. I feel much better knowing all the bearings are new and oil is fresh...

Thats too bad. I have non-catted headers/ypipe and was considering them. Perhaps I'll stick with my plans for a single vibrant cat after the ypipe. I've read they're more resistant to damage.

Great work BTW!

I can't recommend them. I was very conservative on my tune, pretty disappointed with the Kooks Cats and now I've heard it's somewhat common...

 

[67RS427]

One last thing. What model magnaflow did you get and does it drone?

I'll find the number for you but it's in the thread here somewhere... No drone at all, sounds freaking great. Better than any Corvette or Camaro/CTS I've heard. Those sound raspy to me

 

[tgui]

Magnaflow #12909 ;-)

Got it! Sounds good. My headers through the stock muffler sound like ass. Too raspy and like a pissed of race car.

 

[67RS427]

Ice box is actually a CX Racing part I got from a guy locally. It's meant to fit in a battery tray and has the tab welded on the side to use a factory style battery hold down clamp. I made one real quick out of some plate....

 

[67RS427]

Magnaflow #12909 ;-)

Got it! Sounds good. My headers through the stock muffler sound like ass. Too raspy and like a pissed of race car.

I got mine from @NORCAL SS

 

[bottomline2000]

Really nice looking work. U make me want to learn to weld. I sure could use you to do a proper dual exhaust on my truck. The welds these local guys do look like Ray Charles was their instructor.

My only question is how big is your blower after all that porting? Gotta be close to or larger than 2.3 and does porting weaken it any?

That lssimple setup seems to be a joke.. seen other guys have issues with it. Scrap the bad ones..The bad publicity is not worth it..

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[about20ninj45]

Honestly it wasn't too bad at all. I've never rebuilt a blower and I went through the whole thing pretty quick. Use high quality fasteners and just make a plate with holes for the bolts that sits on the face of the blower when pulling the blower hub. Make sure you get full thread engagement, and grade 10 bolts because they are small. The snout shaft comes out easy if you have a press and bearings come off easy as well. I used a slide hammer with a bearing puller that I modified slightly to get the case bearings out. The hubs press back on really easy and can just be done with a socket and hammer.

I pulled my rotor pack and inspected it and changed the oil. Glad I did because ******** did the oil stink. Smelled like crap in the shop for over a week. I don't think the oil was ever changed when it was rebuilt when I got it. Also I noticed one of the shaft bearings had grease getting pulled into the blower so it must of had a vacuum leak at the snout at some point. I feel much better knowing all the bearings are new and oil is fresh...



I can't recommend them. I was very conservative on my tune, pretty disappointed with the Kooks Cats and now I've heard it's somewhat common...

So you used a rebuild kit or just ordered the numbers? looking at replacing mine before I swap to a smaller pulley and e-85. I didnt use the Ls simple kit, I used the OKW kit and had to massage it a little, but once the bugs were worked out, it works perfectly. Im looking for an icebox but, I want a compostie one instead of aluminum, but will settle on a metal one if the price is right.