Ported throttle body for 5.3?

SandMan817 · Post by **SandMan817** » Thu Aug 06, 2009 4:03 pm

I was looking around on ebay and i found a company that sells a ported throttle body for the 5.3, i was just wondering if anyone has used one of these before, and if so, did you notice anything? Also, would the ported TB mess with adjusting the LTFT's?

Scooter88 · Post by **Scooter88** » Thu Aug 06, 2009 4:19 pm

Hey sandman if you find anythin out post up cause im definitely interested to!!

Post by **mikel** » Thu Aug 06, 2009 4:23 pm

It will likely affect your LTFTs, they are generally worth about 5-8 rwhp on a stock LS1, I would guess even less on a 5.3...

SandMan817 · Post by **SandMan817** » Thu Aug 06, 2009 4:34 pm

i've been looking around and people have said that they notice a nice improvement in the mid to high rpm range, and they are good for about 10-15ft/lb and around that 5-8hp gain. Would these gains be higher after adjusting the LFTS's and the Power Enrichment?

05Z71 · Post by **05Z71** » Thu Aug 06, 2009 10:08 pm

TB spacer FTW?

SandMan817 · Post by **SandMan817** » Thu Aug 06, 2009 11:33 pm

a ported throttle body....

05Z71 · Post by **05Z71** » Thu Aug 06, 2009 11:59 pm

Meh, I wouldn't waste the money like you did with that TB spacer if I was you. You will only see a 5 hp gain if that, and that is at the flywheel. So basically RWHP you are looking at a <3 hp gain. I don't know what you are paying for the new TB but from the ones I have seen, they are all around $100 shipped. So with that said, you are essentially paying $33 per hp which is entirely too high for a simple bolt on. The stock TBs are good enough for a NA vehicle. When you get into the forced induction, that is when the ported and polished TB starts being very effective. Just my 2 cents on it, but heck what do I know?

rletzgus · Post by **rletzgus** » Thu Aug 13, 2009 6:24 pm

Haad one. what a waste. It was more problem than it was worth. It did give me more low end torque, but couldn't stop the trouble codes.

SandMan817 · Post by **SandMan817** » Fri Aug 14, 2009 5:37 am

do you remember what codes you were getting?

05Z71 · Post by **05Z71** » Fri Aug 21, 2009 11:23 pm

I think it was the P0654 code....."YOU WASTED YOUR MONEY" code...

SandMan817 · Post by **SandMan817** » Sat Aug 22, 2009 5:01 am

haha aight man, even on a truck with LT's, high flow cats, xpipe, intake, and cam?

05Z71 · Post by **05Z71** » Sat Aug 22, 2009 9:51 pm

Most definitely! They are NO GOOD!!! If you don't believe me then go spend $100 and get one. I will accept your apology later when you come back and say you are sorry and should have listened to me.

SandMan817 · Post by **SandMan817** » Sun Aug 23, 2009 1:43 am

haha i got you man, i believe you! Im sure at some point you would need to replace your throttle body.

05Z71 · Post by **05Z71** » Sun Aug 23, 2009 4:29 am

Yeah, after you get to about 500+ hp

lt1z350 · Post by **lt1z350** » Thu Sep 03, 2009 7:20 pm

i ported mine myself and noticed a seat of the pants difference. throttle response is way better and off the line power is slightly better. I have a 2007 with the larger 90mm tb and on my 2003 I had one and didnt see quite as much as I have on my 2007. I have a smaller tb that i ported the same way as my 2007 one and it is the one with the electronic sensor on it I will sell cheap if anyone wants it.

Ported throttle body for 5.3?

Ported throttle body for 5.3?

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RE: Ported throttle body for 5.3?

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RE: Ported throttle body for 5.3?

RE: Ported throttle body for 5.3?

RE: Ported throttle body for 5.3?

RE: Ported throttle body for 5.3?