TBSS Intake?
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Basically, its like the car manifolds. LS1 sucks, LS6 is better, and the FAST LSXR makes the most power.
For trucks, the "big ugly" intake 99-2007 is the worst. The TBSS from 06+ is better, and the FAST LSXRT is by far better.
http://www.performancetrucks.net/for...s-5-3l-464010/
For trucks, the "big ugly" intake 99-2007 is the worst. The TBSS from 06+ is better, and the FAST LSXRT is by far better.
http://www.performancetrucks.net/for...s-5-3l-464010/
We did some testing on a 2007 Silverado 5.3L engine. It’s a new body style truck that comes OEM with the 90mm throttle body and what looks exactly like a TBSS intake manifold which we were swapping to a FAST LSXRT truck intake manifold.
The truck tested was 100%stock, and there was no tuning done during testing, the OEM 90mm DBW throttle body was used on the 102mm intake.
The intakes were fairly close below 4500RPM, but after 4500 RPM is where the FAST LSXRT started to take off!!
Here are the power gains.
4500 +3.5rwhp
5000 +17.3rwhp
5500 +20.5rwhp
6000 +19.8rwhp





The truck tested was 100%stock, and there was no tuning done during testing, the OEM 90mm DBW throttle body was used on the 102mm intake.
The intakes were fairly close below 4500RPM, but after 4500 RPM is where the FAST LSXRT started to take off!!
Here are the power gains.
4500 +3.5rwhp
5000 +17.3rwhp
5500 +20.5rwhp
6000 +19.8rwhp
Truck manifolds are better than the cars, they just don't fit so not too many results unless its a hybrid conversion. This article here will show you the benefits of the "bread box" https://ls1tech.com/forums/generatio...lts-added.html. It truly is the best mass produced intake for the LSx, unfortunately it does not fit on much!!
Is this really the factory part? 2006 - 08 tbss intake manifold. Super cheap if you ask me.
http://www.ebay.com/itm/Engine-Intak...dWs-vk&vxp=mtr
http://www.ebay.com/itm/Engine-Intak...dWs-vk&vxp=mtr



