Im looking in getting a trailblazer ss intake manifold i heard they r a good upgrade on the silverados i im guessing im gonna need the throttle body and fuel rails?...well i found the some new ones on ebay for 399 free shipping can i find them any wr else cheaper and is it gonna bolt rite on or do i need to buy somthing else and whats gonna be the power gain?

 

Does you truck already have the 4 bolt tb? If so it won't do anything because its the same intake. If not then its a great swap. Watch the classifides, they usually pop up every now and then.

 

No its an 06 its still a 75mm throttle body i think..so if i get the intake manifold and the throttle body it will slip rite in or what

 

Yea, I'm not sure what tb you'll need for yours but I'm pretty sure you will also need the Dr. X harness for the tb. Everything else should bolt right up.

 

like he said above you will need the dr x link for sure my buddy put one on his truck but its an 01 he didnt need fuel rails but he did get the 90mm tb

 

You can find the intakes a lot cheaper around on the forums.. I paid 125 for mine then you will need fuel rails, 87-90mm tb ls3 or nnbs or tbss. And you will need the dr.x harness to make the tb work right

 

Indeed

 

not to be mean but a tbss intake might be too much for ur 4.8 those who gain from them are usually on cammed out 6.0s.. u should cam and stall it before..

 

thanx guys ill c if i can find any cheaper....so my stock fuel rails wont fit on the tbss intake?...and well i was talking to my tuner and he said that should be my next upgrade

 

I think the key to this manifold adding power is having the higher flowing heads like the 07+ sure it runs great on my truck as it came that way, but the power and tq peaks higher in the rpm range than the older engines. If the heads won't flow what the intake is capable of, u still have a bottleneck there.