What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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Doubeleive

Wes
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Stage 8 locking header bolts finally arrived today...

View attachment 215127
View attachment 215128
View attachment 215129

You will notice that these are marked as fitting a 2014 Corvette C7...
View attachment 215130
That alone should make the Burb faster...
View attachment 215131
Not to mention how many HP the Stage 8 sticker is worth... lol
cool, that should help, when I had headers they would come loose, wish someone would make headers that had more coverage when mounted, but no they have to make them with barely enough room to maybe not leak.
 

Tonyrodz

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Stage 8 locking header bolts finally arrived today...

View attachment 215127
View attachment 215128
View attachment 215129

You will notice that these are marked as fitting a 2014 Corvette C7...
View attachment 215130
That alone should make the Burb faster...
View attachment 215131
Not to mention how many HP the Stage 8 sticker is worth... lol
I hate the Stage8 locking bolt design with those damn C-clips.

I had them on my mustang but switched to some Split-Lock design I believe made by Breslin (think they sold design to some other company now). The Split-Lock design has a split threaded part of the bolt and uses an allen type screw in the center that spreads the bolt when tightened after installed.98bba59125835afb8a8664ffd48e43b6.jpg

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18
 

Tonyrodz

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I hate the Stage8 locking bolt design with those damn C-clips.

I had them on my mustang but switched to some Split-Lock design I believe made by Breslin (think they sold design to some other company now). The Split-Lock design has a split threaded part of the bolt and uses an allen type screw in the center that spreads the bolt when tightened after installed.98bba59125835afb8a8664ffd48e43b6.jpg

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18
How did they hold up to all the heat cycles? Would you be able to use the Allen key after all that time to take the bolts out? If you ever had to.
 
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How did they hold up to all the heat cycles? Would you be able to use the Allen key after all that time to take the bolts out? If you ever had to.
Yes, the center screws are stainless I think and before installing I unscrewed them and put anti-sieze on them and have never had a problem. I've been using them on my supercharged, heads, cam, intake 302 since about 2006 and have never had a problem removing them. It's not daily driven though, mostly track use and some cruises during the summer, and is kept in the garage.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18
 

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