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

R3cord303 said:

Man that would be cool. I'd love to slap one on my 07 but $1,000 is a lot of monies. I wonder how big of a pain it would be to tune for the bigger throttle body as well.

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Rocket Man said:

Too good to be true? You’ll need their 102 mm TB to go with it to gain 25 HP, so about $1000 give or take.


”Designed specifically for GM 4.8/5.3/6.0L cathedral port truck engines and cathedral port LS1, -2, -6 race applications where hood clearance is not a concern, the FAST™ LSXRT™102mm Intake Manifold follows the path chartered by the original FAST™ LSX™ Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body™. And similar to the LSXR™ 102mm Intake Manifold for cars, the LSXRT™ features the ability to remove individual runners for modification.

The LSXRT™ is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST™ Big Mouth 102mm Throttle Body™, it can also be used with stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST™ 92mm or 102mm throttle body.”

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lowh07 said:

go with EFI Live from Blackbear and new tunes are free for as long as you own the vehicle... no they’re not paying me to say this. Anytime I add anything new... just datalog and send in the file

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Mickey_7106 said:

Too good to be true? View attachment 234029

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Rocket Man said:

Too good to be true? You’ll need their 102 mm TB to go with it to gain 25 HP, so about $1000 give or take.


”Designed specifically for GM 4.8/5.3/6.0L cathedral port truck engines and cathedral port LS1, -2, -6 race applications where hood clearance is not a concern, the FAST™ LSXRT™102mm Intake Manifold follows the path chartered by the original FAST™ LSX™ Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body™. And similar to the LSXR™ 102mm Intake Manifold for cars, the LSXRT™ features the ability to remove individual runners for modification.

The LSXRT™ is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST™ Big Mouth 102mm Throttle Body™, it can also be used with stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST™ 92mm or 102mm throttle body.”

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kbuskill said:

It doesn't say anything about how much torque this would increase but I wonder... since this in effect lengthens the intake runners if it would increase torque.

I base this off of my knowledge of the old tuned port injection engines. The long intake runners created alot of torque.

I have often thought that it would be cool to have a long runner intake for the Burb as I don't really care about WOT HP but I do love torque to get the big girl moving.

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R3cord303 said:

This is a very interesting thought. I wonder how that plays into the manifold geometry. Kinda like how header primary length effects power bands.

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kbuskill said:

Very interesting indeed.

In all honesty though... I always thought the TPI intake looked cool as can be... kinda like headers for your intake... lol

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kbuskill said:

In all honesty though... I always thought the TPI intake looked cool as can be... kinda like headers for your intake... lol

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R3cord303 said:

Have you seen the Edelbrock Cross Ram for the LS3 (or I'd hazard a guess any other LS that has the same ports)

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R3cord303 said:

I thought I only needed the hybrid tailgate if I wanted to run the hybrid spoiler.
I would love to do that as well. So so so much.

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