Hoodrat_Koda

I have searhed far and wide and seen every answer imaginable. I recently switched to a FAST lsxrt with a Nick Williams 102mm throttle body. I have messed around and done EVERYTHING in my power to make it run right and I can not get the idle quality I desire from it. With the factory manifold, TB, and tuning the truck runs great. Mods are as follows.

Stock LM7 Bottom End
TSP 224/228R cam
PRC Stage 2.5 head work (Decked .030 for mild bump in compression)
CAI, Longtubes, Off Road Y pipe, Singe 3" flowmaster
Basic Basic setup

Should I go to what I know works and be happy or is there a better alternative. I have read the truck intake leaves things to be desired. Thank you

Vortec350ss

iTrader: (20)

For a 5.3 with that cam I don't think there is any need for a 102. I would run an 87mm (2007+ or tbss LS2) truck intake hands down. You'll make the most power under the curve. You may give up a little right at the very top of your rev range... but its nothing you'll miss for what you'll gain under the curve and in drivability.

FFDP

iTrader: (2)

Fast intake and 102mm TB are way overkill for that setup anyway in my eyes.

Swap to a NNBS/TBSS intake as they flow better than the NBS intakes and call it a day.

Hoodrat_Koda

The more I learn Im certain youre both right about being too much. Got too caught up in the "OMG its a FAST intake" stuff you read online all day.

Hoodrat_Koda

Also. What throttle body to run with that. My truck is cable driven. I thought all the nnbs were Drive by wire. Thanks again

FFDP

iTrader: (2)

Nearly $1,500 for both if bought new for minimal gains over cheaper intakes is the main reason I'd never recommend one or use one.

GM1697

iTrader: (1)

Just search 90mm or LS throttle bodies and youll find cable driven ones. I think BBK makes one in the $250 price range. Also I think ebay has some real cheap ones for like 80.

GREENSIERRA

it didnt matter what I did with my old lsxrt intake i could never get it to seal right and had a hell of a time getting it to idle right.
I ran a tbss intake before the lsxrt and it ran great for alot less money
tbss/nnbs with a 87mm will be all you need

Hoodrat_Koda

This is exactly the issues I am having. I have fought this thing on and off since last october and I am sick and tired of it. So TBSS intake it is. Now to decide on a Cable driven throttle body. If any one has suggestions in any direction with any being better than other I am all ears. Thanks a million

06murder

Tbss intake are Penny's ,them fast intake ridiculous priced for like 15hp or so. When a tbss intake gain round bout 10hp but run better. The fast it for trucks, i read everyone was having problem with them sealing. Sell the fast for a tbss and be done!