Throttle Body Question ?

**99CANADAHAWK** · 01-08-2009, 04:47 PM

I was Looking at maybe buying a new throttle body for my car and was wondering if the 85mm BBK TB , will it fit with an SLP bellow or should I go for the 80mm .
I later plan on swiching to an LS6 Intake & don`t plan on doing anything crazy with my car other than bolt ons .
Thanks .

**JoshieDoom** · 01-08-2009, 05:24 PM

Buy a ported/modded stocker.

**0verkill** · 01-09-2009, 07:50 AM

sent your stocker to mark at www.s2performance.net and have him do his thing.

**BluBeaSSt** · 01-09-2009, 02:34 PM

Yes don't waste your money on a 80. Just have your stock one ported or go find a core stock TB and have it ported.

If your gonna upgrade get a 90 +

**99CANADAHAWK** · 01-10-2009, 05:13 AM

OK , so now I guess I have two options :

I Can have my stock TB Ported or

I will save up some more money and buy an 90mm

So if I do wait an buy the 90mm will it work with an LS6 intake ? & will it fit with my SLP intake bellow ?
Thanks Again .

**mark21742** · 01-10-2009, 05:32 AM

Originally Posted by 99CANADAHAWK

OK , so now I guess I have two options :

I Can have my stock TB Ported or

I will save up some more money and buy an 90mm

So if I do wait an buy the 90mm will it work with an LS6 intake ? & will it fit with my SLP intake bellow ?
Thanks Again .

if you go with a 90mm tb you will need to get a 90mm intake.
ls1/6 intakes he a three bolt mount, ls2/fast/bbk have a 4 bolt mount

**Bouvers** · 01-10-2009, 09:00 AM

thats affirmitive... 90/92 and I thought I heard something about a 100mm tb... its not as easy as buying a 300$ 4 bolt tb you need to spend 1000$ for a FAST intake to marry it to

**mark21742** · 01-10-2009, 09:03 AM

Originally Posted by Bouvers

thats affirmitive... 90/92 and I thought I heard something about a 100mm tb... its not as easy as buying a 300$ 4 bolt tb you need to spend 1000$ for a FAST intake to marry it to

fast has a 102mm now i think its for the ls7

**supaxero** · 01-10-2009, 09:06 AM

OK, I'll ask the dumb question. What is porting and how does it work

**99TransAmSLP** · 01-10-2009, 09:08 AM

I am looking to do that too.
I want a good intake and throttle body

**JoshieDoom** · 01-10-2009, 09:17 AM

Originally Posted by supaxero

OK, I'll ask the dumb question. What is porting and how does it work

The best explaning I can give is removing metal in the throttle body and making it smooth to flow more air.

Here is the example. When someone has asthma their airways restrict and make it hard to breath, porting is kinda like an inhaler, it makes the airways open up and more air to flow in.

**0verkill** · 01-10-2009, 10:01 AM

Originally Posted by JoshieDoom

The best explaning I can give is removing metal in the throttle body and making it smooth to flow more air.

Here is the example. When someone has asthma their airways restrict and make it hard to breath, porting is kinda like an inhaler, it makes the airways open up and more air to flow in.

this is right and if you go to the like i posted up you can find a befor and after shot of one and you can realy see the defrece.

**JoshieDoom** · 01-10-2009, 10:15 AM

This is my friends ported and this is my stocker(Which he ported later.. lol)

Half Shaft mod, Bump stop mod, and ported.

**0verkill** · 01-10-2009, 10:23 AM

mark will smoth out the big open space on the top left. and the scrues on the bar.

**supaxero** · 01-10-2009, 10:44 AM

So would it be beneficial to port a larger throttle body (85 or 90) compared to porting the stock? I'm not sure if there is a point of diminishing returns.

**99TransAmSLP** · 01-10-2009, 10:50 AM

what is the bump stop mod

**JoshieDoom** · 01-10-2009, 11:09 AM

Originally Posted by 99TransAmSLP

what is the bump stop mod

From stock the blade can only open at like 85 degrees, this allows it to open a full 90 degrees

**99TransAmSLP** · 01-10-2009, 12:03 PM

can you tell me what to do?

**ls1camino** · 01-10-2009, 12:24 PM

Originally Posted by 99CANADAHAWK

OK , so now I guess I have two options :

I Can have my stock TB Ported or

I will save up some more money and buy an 90mm

So if I do wait an buy the 90mm will it work with an LS6 intake ? & will it fit with my SLP intake bellow ?Thanks Again .

The outside diameter of the 90mm and stock (78mm) throttle bodies are the same...4" (102mm). The inside diameter is different, which is what is measured (78mm or 90mm). So yes, the SLP Smooth Bellows will fit.

**99CANADAHAWK** · 01-10-2009, 03:56 PM

Originally Posted by ls1camino

The outside diameter of the 90mm and stock (78mm) throttle bodies are the same...4" (102mm). The inside diameter is different, which is what is measured (78mm or 90mm). So yes, the SLP Smooth Bellows will fit.

Awasome

So I can attach an 80 or 85mm TB to my Bellow !
Now witch one would be best for the LS6 intake ? if I go that route is the 85 too big ?

Thanks.