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

[iamdub]

Is that the bigger TB with the "gold" throttle plate???

If so, did you notice any difference over the stock TB???

I have heard it improves throttle response.

I believe the stock TB is 87mm and the LS7 is 90mm. The bigger TB probably does improve response because a 90mm hole opened a given percentage will flow more air than an 87mm hole at that same percentage. You can achieve LS7 TB throttle response with the stock TB by pressing the pedal a little further. Speaking of, remember that you can subconsciously press the pedal a little further by performing the "Italian Throttle Mod".

 

[Fosscore]

Speaking of, remember that you can subconsciously press the pedal a little further by performing the "Italian Throttle Mod".


Oh snap!

 

[CHOO CHOO]

I knew it wasn't much. To some people, it still may mean something. I mean, it probably won't mean shit to someone that piles lumber all over their leather interior...

You are correct sir.

 

[HiHoeSilver]

Thread on fire!

 

[Fosscore]

 

[gooffeyguy]

Just checked... Yukon was rated 10HP lower than the Tahoe. But the E85 HP/TQ specs are the same.

So for a Yukon driver, running E85 would provide a 16HP increase.

View attachment 214215

That's probably a typo. Notice all the others say 320hp, even the yukon XL

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

 

[kbuskill]

That's probably a typo. Notice all the others say 320hp, even the yukon XL

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

Yep... I thought about that.. but pretty sure I read it somewhere else as well.... who knows for sure... what's 10HP amongst friends really anyway.

 

[bfourman]

Pulled the intake manifold on my 6.0 thinking maybe I had a leak causing my rough idle when stopped in Drive. Even after reading all the blow by/catch can threads I wasn’t prepared for the amount of oil in the intake! 219k of blow by adds up! I ordered metal intake gaskets because the interchange applied across all 6.0s and that’s what I put in the ‘00, turns out that’s not true. I’ll have to get the proper gaskets tomorrow, all FelPro lists for the ‘09 is plastic. Not thrilled about that but can’t do anything about it. Until tomorrow...

If this doesn’t clear up the rough idle I’m going to be annoyed. It’s downright awful.

 

[swathdiver]

Just checked... Yukon was rated 10HP lower than the Tahoe. But the E85 HP/TQ specs are the same.

So for a Yukon driver, running E85 would provide a 16HP increase.

View attachment 214215

The 310 HP rating was for 2007-2009 Tahoes, Yukons, Suburbans, Avalanches and Yukon XLs equipped with the aluminum block LC9. The engine was rated for 310 HP @ 5200 RPMs and 335 FTLBS Torque @ 4400 RPMS. The iron block LMG was rated for 320 HP @ 5200 RPMs and 340 FTLBS Torque @ 4200 RPMs.

The LC9 was used in the XFE Tahoe and Yukon models and in many but not all 4WD Suburbans, Avalanches and Yukon XLs.

When both engines received new camshafts and VVT in 2010, they were both rated for 320 @ 5400 for horsepower and 335 @ 4000 for torque.

Mine feels great on E85 but I really should make a few passes down the 1/4 mile on gasoline to see if the BlackBear tune is faster.

I do not run 87 in my truck and probably never will. Don't run 87 in anything, not in decades. Anyhow, mine gets about 3 mpg less than 93 octane gasoline in combined city/highway driving on average. The cost difference right now is six cents per mile, a huge plus for running E85. Twenty cents a mile on gasoline versus fourteen cents a mile on E85.

 

[sarneson91]

Drove from Whidbey Island Washington yesterday to Redding Cali and stopped for the night, currently on day 2 and about halfway to Bakersfield, the pass with snow and fog was killer last night but looks like good driving weather for the next few days.

 

[Sam Harris]

The 310 HP rating was for 2007-2009 Tahoes, Yukons, Suburbans, Avalanches and Yukon XLs equipped with the aluminum block LC9. The engine was rated for 310 HP @ 5200 RPMs and 335 FTLBS Torque @ 4400 RPMS. The iron block LMG was rated for 320 HP @ 5200 RPMs and 340 FTLBS Torque @ 4200 RPMs.

The LC9 was used in the XFE Tahoe and Yukon models and in many but not all 4WD Suburbans, Avalanches and Yukon XLs.

When both engines received new camshafts and VVT in 2010, they were both rated for 320 @ 5400 for horsepower and 335 @ 4000 for torque.

Mine feels great on E85 but I really should make a few passes down the 1/4 mile on gasoline to see if the BlackBear tune is faster.

I do not run 87 in my truck and probably never will. Don't run 87 in anything, not in decades. Anyhow, mine gets about 3 mpg less than 93 octane gasoline in combined city/highway driving on average. The cost difference right now is six cents per mile, a huge plus for running E85. Twenty cents a mile on gasoline versus fourteen cents a mile on E85.

Great info swathdiver, thanks for sharing the details!


Sent from my iPhone using Tapatalk

 

[Doubeleive]

Drove from Whidbey Island Washington yesterday to Redding Cali and stopped for the night, currently on day 2 and about halfway to Bakersfield, the pass with snow and fog was killer last night but looks like good driving weather for the next few days.

you must have just passed me, lol, you dodged a bullet on your timing over Shasta we just had a big storm about a day and a half ago, must have been a lot of Snow up there?

 

[gooffeyguy]

Added air to my tires. It's been really cold and tire air pressure was only 32. I like them at 35-36.

Noticed a nickel sized piece of chrome peeling off right next to the tire valve on one wheel. It's like a small flap of chrome, and the wheel surface underneath the flap feels real sticky. Wonder if I should just let it be, peel it off, or maybe glue it down with a thin layer of epoxy or something?

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

 

[Tonyrodz]

Added air to my tires. It's been really cold and tire air pressure was only 32. I like them at 35-36.

Noticed a nickel sized piece of chrome peeling off right next to the tire valve on one wheel. It's like a small flap of chrome, and the wheel surface underneath the flap feels real sticky. Wonder if I should just let it be, peel it off, or maybe glue it down with a thin layer of epoxy or something?

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

That's probably the beginning of your peeling issues. I'd try to get it flush as possible, and seal it some how. You don't want any water, moisture or dirt getting in there.

 

[Regency]

Drove from Whidbey Island Washington yesterday to Redding Cali and stopped for the night, currently on day 2 and about halfway to Bakersfield, the pass with snow and fog was killer last night but looks like good driving weather for the next few days.

Whidbey Island huh? Did you pass race road?

 

[Regency]

Got stuck in traffic

 

[Tonyrodz]

Got stuck in traffic

View attachment 214324

I HATE TRAFFIC!

 

[HiHoeSilver]

Drove from Whidbey Island Washington yesterday to Redding Cali and stopped for the night, currently on day 2 and about halfway to Bakersfield, the pass with snow and fog was killer last night but looks like good driving weather for the next few days.

"it's 3 days ride from Bakersfield and I don't know why i came...."

Anybody?

 

[Fosscore]

"it's 3 days ride from Bakersfield and I don't know why i came...."

Anybody?

Had to look it up and now I know why. Not a fan. Went to school with the ultimate bootlegging, band travelling, heavy smoking Deadhead from Buffalo Grove.

He tried everything in his power to convert me, but never succeeded. Cool dude, but man was he a blazer.

Italian dude who used to get a bit high pitched when he got excited and he earned a nickname “Caw”. Sounded a bit like a crow and he used to get irate when he would get called out on it.

 

[HiHoeSilver]

Had to look it up and now I know why. Not a fan. Went to school with the ultimate bootlegging, band travelling, heavy smoking Deadhead from Buffalo Grove.

He tried everything in his power to convert me, but never succeeded. Cool dude, but man was he a blazer.

Italian dude who used to get a bit high pitched when he got excited and he earned a nickname “Caw”. Sounded a bit like a crow and he used to get irate when he would get called out on it.

Yeah, I know those guys. I'm not one. Lots of types of Deadheads, which I really love. I'm more the "wish I lived south with a yard full of cars and a nice barn" type. Got hooked at age 14 and have a massive live collection, etc.

That being said, I'm a classically trained pianist and play many other instruments, both for fun and money, and my tastes are wide ranging.

For you, @Fosscore, imma fire up a little Dokken, as I ran into and got to hang /play a little with /for them this past summer.