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

[67RS427]

Did you use shortened ride height links? If not then yes the air ride will raise the rear up. You can use threaded rod and cut your own. I forget the exact length I ended up making mine but I dialed it in until it sat just right. Your rear looks high to me but maybe it's because I'm running 26's. At that point you'll probably need the free travel mod.

I should have clarified, it used to have Auto Ride, I removed everything... I still wouldn't mind the rear down another inch but figured I would let it settle first and get the front squared away. I just recall Tony telling me the BellTech stuff doesn't drop AutoRide trucks as much, not sure if it matters if it's kept or not. I'm on a 22" wheel, stock height.

I'm at 3 inches in the rear and got about an inch to bump stop . I'll end up doing the free travel mod eventually bc I bottom out on big dips on the roads. Oh and it will settle after a few weeks

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Thanks for the info, yours a NNBS? 3" looks to be about what I got out of the rear. I could always go lower but wanted to see how much it actually settles. What size tire/wheel are you running? After compressing one of the tires, I just don't see how it could possibly hit the frame. I could be wrong, time will tell and I guess I will be in the same boat as you and just do it eventually if needed.

 

[juan84]

Here's how it sits with 2/3 mins an xl though

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[juan84]

I'm on 22" 285 45

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[67RS427]

Here's how it sits with 2/3 mins an xl though

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Looks great! You look about the same as I'd be in the rear once mine settles but I definitely gotta drop my front another 1". I'm not sure why I didn't get as big of a drop as I wanted. I used 2" drop Silverado spindles and then used 3 rings on my Adjustable strut which should have put me down total of 3.5" in the front.

Now the Struts gotta come back out :-( I really wish these were adjustable like the QA1 Coil Overs in my Camaro lol... Oh well

 

[67RS427]

Correction after pulling up the Adjustable Strut instructions... I used 3X 8mm rings which "should" drop an additional .5" over OEM height plus my 2" drop spindles only giving me a 2.5" drop. Not enough for me. Looks like I need to remove 2X of them and just run a single 8mm spacer to give me a total of 3.5" of drop in the front. I guess my concussion and excitement to get this shit together ultimately bit me in the ass as now I've gotta take the front end apart again. Oh well, it's the price we pay to do this stuff. I thought the Silverado 2" drop spindles were "2" or more" but I think that has more to do with the geometry and being able to drop more than 2" without affecting alignment angles. I misunderstood and thought it might give me a little more than a 2" drop.

 

[Regency]

Love the build so far. Nice work!

 

[08grey]

What struts do you have in the front?

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[67RS427]

What struts do you have in the front?

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Bell Tech Adjustable +2"/-2", Factory Springs


http://www.belltech.com/products/be...m-silverado-sierra-suv-2-to-2-drop-25003.html

 

[67RS427]

Finally got my correct Y pipe so this truck might actually be on the road again soon lol... I actually got 2 sets for the price of 1. If I don't get charged for the 2nd set of Kooks Y Pipes, someone here is gonna get a great deal lmao...

Kooks Y Pipes:

Also finished the valve job on my heads and cleaned up the deck. Just need to assemble them...

I decided to get the SLP resonator delete... I really wanted a large side exit tip and had a lot of trouble finding one that was 3.5" inlet. This will look great and I might coat it black...

 

[992dr]

WOW, you sir do not mess around. Love it and all the progress.

Do you think you'll be able to post up a parts list for the LSA swap?
What was wrong with the original Y-pipe you ordered?

 

[Tonyrodz]

WOW, you sir do not mess around. Love it and all the progress.

Do you think you'll be able to post up a parts list for the LSA swap?
What was wrong with the original Y-pipe you ordered?

They sent him the wrong one.

 

[Rocket Man]

They sent him the wrong one.

 

[67RS427]

They sent him the wrong one.

Correct box and part numbers on the tags but ultimately wrong part

I will add that it was a blessing in disguise because if I had the correct one the blower would be installed already. Instead I decided to pull the heads while I waited for the correct pipe to extract a bolt and I found the drivers side head barely torqued. In addition to that the head gasket was ready to blow at any time and if I added the blower it would have been done for. Now I went through both heads and installed new lifters and a few other things I would not have done otherwise. Now this motor will be ready for prime time and as much boost as I can probably throw at it with the stock LSA blower...

 

[67RS427]

LS7 Lifters/Guides (universal "upgrade" now), ARP Headbolts, Hardened Pushrods, GM Performance Valve Springs, Soda blasted both heads, New valve jobs and Cometic .060" MLS Head Gaskets ($100 each but drop my compression down closer to 10:1 for more boost)

All these things I wouldn't have done but I'm glad I did. Cheap insurance since I drive my cars/trucks hard every day. Valve train will be more stable for sure...

 

[Rocket Man]

LS7 Lifters/Guides (universal "upgrade" now), ARP Headbolts, Hardened Pushrods, GM Performance Valve Springs, Soda blasted both heads, New valve jobs and Cometic .060" MLS Head Gaskets ($100 each but drop my compression down closer to 10:1 for more boost)

All these things I wouldn't have done but I'm glad I did. Cheap insurance since I drive my cars/trucks hard every day. Valve train will be more stable for sure...

Are those valve springs duals? And are you doing a rocker trunion upgrade or does that not apply to your heads?

 

[67RS427]

Are those valve springs duals? And are you doing a rocker trunion upgrade or does that not apply to your heads?

Not duals, just a good quality Beehive spring. Nothing crazy needed for me with the stock cam, just looking for more stability and replacing worn out 10yr old 150k mile springs... GM makes a great rocker and the Trunion upgrade is not necessary for my application. That only affected a few years and not needed for a stock cam. I will be able to meet and exceed my power goals with pulleys and wont really need a blower cam. I don't see myself spinning this motor much over 6,200rpm either, just not needed to make the power. Peek power is one thing, making power across the board is what counts.

 

[67RS427]

For those interested, here is my parts list... Not much to it. I shopped around for the best prices and did the whole thing for about $2,500.

*I'm trying to replace images that were missing or not showing up. If someone needs a parts list or help putting one together, just let me know...

 

[Rocket Man]

Not duals, just a good quality Beehive spring. Nothing crazy needed for me with the stock cam, just looking for more stability and replacing worn out 10yr old 150k mile springs... GM makes a great rocker and the Trunion upgrade is not necessary for my application. That only affected a few years and not needed for a stock cam. I will be able to meet and exceed my power goals with pulleys and wont really need a blower cam. I don't see myself spinning this motor much over 6,200rpm either, just not needed to make the power. Peek power is one thing, making power across the board is what counts.

It's not necessarily the cam that makes a case for dual springs, it's the fact that you're adding boost to the equation. Stock springs, even GM Performance, don't have alot of seat pressure and if you factor in boost, I believe you might exceed that even at 8 lbs especially if you rev it high. I was told that if I don't want to pop a spring or drop a valve I'd better go with duals right away before something bad happens. And as far as the rocker trunions- better have another look at that as well. I checked, and your L92 has the same crappy design as my LQ4. Here's a link to a post at Performance Trucks where they talk about a failure with needle bearings all over the place in an L92. They installed the Comp Cams kit after the failure. Beware, if one does fail it will send needle bearings all through the engine due to the fact the stock design uses non-captured bearings. You might get away without these upgrades but I felt it's a gamble I'm not willing to take.

 

[67RS427]

It's not necessarily the cam that makes a case for dual springs, it's the fact that you're adding boost to the equation. Stock springs, even GM Performance, don't have alot of seat pressure and if you factor in boost, I believe you might exceed that even at 8 lbs especially if you rev it high. I was told that if I don't want to pop a spring or drop a valve I'd better go with duals right away before something bad happens. And as far as the rocker trunions- better have another look at that as well. I checked, and your L92 has the same crappy design as my LQ4. Here's a link to a post at Performance Trucks where they talk about a failure with needle bearings all over the place in an L92. They installed the Comp Cams kit after the failure. Beware, if one does fail it will send needle bearings all through the engine due to the fact the stock design uses non-captured bearings. You might get away without these upgrades but I felt it's a gamble I'm not willing to take.

None of the springs for a VVT motor have a lot of spring pressure on the seat... In fact, Comp Cams has 4 cam choices for VVT engines and most of the spring recommendations are single beehive springs like the one I will be using. The extra pressure is not wanted or needed on a VVT engine @ the seat. As far as the rockers go, as I said, there were a few years GM had issues with rockers and them failing. I'm not really worried about it and I would buy new rockers before spending $140 + my labor to retro fit an OEM rocker. Maybe I'm taking a big risk but I think I have covered almost everything important. I've heard of those comp kits coming apart as well. GM spent millions of dollars on R&D and have billions of these lifters out there making crazy power and running crazy high mileage with no issues. I don't expect any in my application when I will be well under 6,500rpm, not 6,800rpm+ like a lot of these guys running them.

 

[Rocket Man]

The rocker trunion issue is well known but it's your engine. Pretty cheap insurance if you ask me. The rockers themselves are bulletproof and there's no need for aftermarket rockers that cost 4 times what that kit cost. I can tell you from what I saw when I did mine the Comp Cams kit is way better than the stock. I won't get into the part about the VVT engine not needing dual springs, I don't need to butt heads. I was just offering advice on what I've learned. Good luck.