80mm Throttle body

[porter]

Hi,
So far i have got maffless tune, Sureflo OTRCAI, Try-y extractors and twin 2.5" exhaust. Next i was thinking of getting an 80mm throttle body. Has anyone put one of these on there LS1's and if so do they make much of a difference??. I have seen 80mm polished ones by BMI for $450 on ebay which i will probably get if noticeable gains are found from larger TB's. Any input would be much appreciated.

Cheers, Shaun.

[FANG IT 350]

just fitted an 80 mm bbk last week made heaps off difference to my ute,but im also running a cam, crisper throttle responce and it just revs harder i reckon.

[GMMAD]

i recently put a ported TB on
made a noticeable difference

[pillow]

Same here, went from a maf tune to a bigger throttlebody and mafless, fair bit of difference:)

[porter]

Cool looks like a goer. Anyone Heard of BMI before? They look like nice throttle bodys but have never heard of this brand before. At $450 looks like a bargain for a brand new product.

Cheers, Shaun.

[pillow]

I've got a BMI, but it's not the one of the ones from ebay

http://img.photobucket.com/albums/v496/mrpillow/DSC07989.jpg

http://img.photobucket.com/albums/v496/mrpillow/DSC07992.jpg

[porter]

Hey Pillow what size is that Throttle body you have there? BMI said they can supply one to me to fit the LS1 for $550 but its 78mm not 80mm. Also how does it perform did you notice much of an improvement??. Might just go for the 78mm one cause they say it will just bolt straight on. They recon they put it on the dyno and got 10kw increase.

Cheers, Shaun.

[-HSV-]

http://www.ls1.com.au/forum/showthread.php?t=75921 heres one if your interested :)

make an offer, can post aus wide :)

[porter]

hey -HSV- the throttle body you have in those pics does not look like a BBK throttle body I have seen heaps of BBK's B4 and they usually have BBK written on them and look a bit different in general. Are you sure this throttle body is BBK? Also how many KMS has it done.

Cheers, Shaun.

[pillow]

Hey Pillow what size is that Throttle body you have there? BMI said they can supply one to me to fit the LS1 for $550 but its 78mm not 80mm. Also how does it perform did you notice much of an improvement??. Might just go for the 78mm one cause they say it will just bolt straight on. They recon they put it on the dyno and got 10kw increase.

Cheers, Shaun.

Yep mine is the 78mm. That 10rwkw gain they're talking about was my car - first one fitted in Australia

[porter]

Ah yeah cool. 1 Last Question is your engine pretty much stock or do you have cam etc.. If so do you think it will still give the same gains with my LS1.
Sorry bout all the Q's just manna make sure im gettin my moneys worth.

Cheers, Shaun.

[SSidewayz]

Hey, I got a question for yas. Why has the second throttle cable been deleted with the after market TB? Ive seen this on a few pics off different cars. I assumed that the second cable was for cruise control? Am I wrong? Or is it that the pics Ive seen dont have cruise?

[pillow]

otrcai, tb, pacie tri y's, opened up cats, twin 2.5, 4.11s, tune:)

I never had a second throttle cable and I have both cruise and traction control...

[FANG IT 350]

my ute has a second throttle cable for the cruze and the bbk 80mm fitted perfect.

[IH8FORDS]

http://www.ls1.com.au/forum/showthread.php?t=75921 heres one if your interested :)

make an offer, can post aus wide :)

Mate, that ain't a bbk item you have.
Where did you buy it? and how much did you pay?
I have a bbk, and they are pretty good.
Can't say i've noticed a difference, but thats due to me getting all my work done at once.
But i can say that with an otr, the intake sound at wot is just amazing.
I brought mine from rebel ss off the forums for $450, that was polished aswell as being brand new.

Cheers,luke

[SSidewayz]

otrcai, tb, pacie tri y's, opened up cats, twin 2.5, 4.11s, tune:)

I never had a second throttle cable and I have both cruise and traction control...

Ok so im thinking maybe its an earlier model thing? (Than a VY). Cause i see you drive a VX. Then I see this...


my ute has a second throttle cable for the cruise and the bbk 80mm fitted perfect.

I see that the ute is a VU, so why does one need the extra cable and not the other? Anyone know?

[hogs]

Evening,

Folks, please do not think that you need to fork out $400 - $1000 for a throttle body that actually improves performance.

Yes, it will be billett, and look nice and shiney, and have the makers name etc stamped on it, but if you have a dremel, or like myself a local flow engineer, the same or similar gains can be achieved for much, much less.

If your after BLING pay the $'s, but it does not have to be the case.

There is a great thread here on the modification of TB's do a search!

Finally, correct me if I am wrong, the intake for the manifold, if using the LS6 is only 78mm! You can put a 100mm TB on but it will still only flow through a 78mm opening.

Cheers,

Hogs,:)

[FANG IT 350]

hogs i dont care what any body says ,i fitted an 80mm bbk and im telling u it does make a difference,obviously uve never fitted one or your car isnt making enough power to fell the difference.:)

[BLACK 346]

hogs i dont care what any body says ,i fitted an 80mm bbk and im telling u it does make a difference,obviously uve never fitted one or your car isnt making enough power to fell the difference.:)

Ah, but was the t/b you replaced it with a stocker or a ported and
polished unit? I replaced my stocker whilst still unopened with a
Rebel SS ported and polished stock unit and I also noticed quite
a difference. Mainly in throttle response :)

[porter]

Cheers for all the input guys definately the best forum i have come across yet. Hoggs i have taken your advice and searched for modification of TB's but cannot seem to find much info on modding throttle bodys. Any idea what the thread is called?. I think $500 for 11rwkw isn't too bad for a bot on mod, still keen to read everything i can b4 i buy it though.

Cheers, Shaun.

[GMMAD]

try these Dus is a forum member ,i have one of these and can say they are a good buy,as Hogs said you can use a dremel but doesnt get it perfectly round and you can get high and low spots Dus uses a machine to get it perfectly smooth and even

[hogs]

Evening,

Here is the link to the information that I referred to.

My TB as I stated was done by a local Flow Engineer who has actually been commended by the manufacturers of FAST intake for the improvements he has been able to gain from their product!!!!

http://www.geocities.com/wilwaxu/throttlebody.html

Cheers,

Hogs,:)

PS Hey SMICK ya got 20" Rims and they are CHROMMED too I bet. Ya been ripped off fella!!

Evening,

Done a search, but could someone confirm or refute the fact that the LS6 intake manifold has a 78mm opening please?

Cheers,

Hogs,:)

[FANG IT 350]

Evening,

Here is the link to the information that I referred to.

My TB as I stated was done by a local Flow Engineer who has actually been commended by the manufacturers of FAST intake for the improvements he has been able to gain from their product!!!!

http://www.geocities.com/wilwaxu/throttlebody.html

Cheers,

Hogs,:)

PS Hey SMICK ya got 20" Rims and they are CHROMMED too I bet. Ya been ripped off fella!!

Evening,

Done a search, but could someone confirm or refute the fact that the LS6 intake manifold has a 78mm opening please?

Cheers,

Hogs,:)

hey hogs no i dont have 20 s there 18 s and i wouldnt call $400 being ripped of for a $950 t/b and 10 plus more rwkw champ.

[hurricane]

Hi Shaun, have a bbk t/b sitting in my shed at the moment when i put it on made only a slight difference so i guess its up to you. if you want make me an offer. Cheers Ian.

[porter]

Ian
How much do ya want for the TB? I just got $350 for my b'day any chance of gettin it for that.

Cheers, Shaun.

[hogs]

Evening,

Hey PORTER, read my post above and go to the link.

If you are not confident of doing it yourself get a local tech to do it.
Should cost less than $100 and you get to put the other $250 towards mods!

Cheers,

Hogs,:)