i was wondering what throttle bodies people are running on here. i have an ld9, and want to invest in a bigger one.

can anyone tell me what tb they are running, and if there was a noticeable power gain? thanks!

Here you go

hopefully OEM will go through with this and get it done, i dont doubt he will because hes brought a ton of good stuff to the j community.

It will happen, just working on a few big projects right now.


http://www.overkillengineeringmotorsports.com/

thats a fuel rail... i was wondering about throttle bodies...

my bad dude, it is the wrong link. This should be the right one!

A few boosted guys are running a stock LS1 TB, but they are also running aftermarket intake manifolds.



Tinkles

2003 Cavalier 1SV
Bagged and Blown

well i have 2.5 inch exhaust all he way back to a borla muffler, no cat, no res, secret cams, msd dis-2, generic intake... and i wanted to expand to a bigger throttle body, but didnt know if it was worth it?

and i have a 2.3 throttle body sitting around, how big is that? and how big is my stock ld9? in mm i mean?

thanks!

and add a pacesetter 4 to 1 header to that, sorry, forgot that one!

Quote:

i have a 2.3 throttle body sitting around, how big is that? and how big is my stock ld9?

2.4 TB - 52 mm

2.3 TB - 56 mm





* * BIG FOR SALE POST * *

rsm 62 mm a couple around i know some one who will be selling pretty soon if intreasted



8 psi with m62 and IAT under 100

i personally feel that 58mm is all a n/a 2.4 will ever need.

smgmotoring.com is where i got mine.



I'm tired of wasting my time... now I'm breakin' free.

look at the hole on your manifold and measure the diameter there. Better port match to whatever size the throttle body is by the backside.

a really easy upgrade would be to cut the throttle shaft in half. Decreasing the cross-section of the shaft increases the throttle body's usable area.

z yaaaa wrote:i personally feel that 58mm is all a n/a 2.4 will ever need.

smgmotoring.com is where i got mine.

They only have a 62mm for the 2.2L on that site.

If you guys can just hold out a little longer I can start doing these.


http://www.overkillengineeringmotorsports.com/

I'm running the 62mm tb from RSM along with their ported manifold to go along with the larger throttlebody.
The tb is actually 60.9mm in diameter with a digital caliper measurement though.
On performance gains, no.
Of course, the exhaust I've been running on the car has been done in such a way it's smaller in diameter than stock because when they crush bent the elbows, they really stretched it to be smaller in diameter than stock.
So basically, the car doesn't breath.
But that's soon to change with the Atomic exhaust of 2.5 inch though.
If the car breaths good, a larger throttlebody is a must.



Misnblu.com
Newbie member since 1999
Thank you Dave and JBO!

OEM wrote:If you guys can just hold out a little longer I can start doing these.

we are hanging out just a little ancy!

how much will your's be mark?



I'm tired of wasting my time... now I'm breakin' free.

OEM wrote:Ok, I am just putting this up as a feeler, please just put a yes or no. This would be for a ported and polished TB for the 2.4L, I could do them for the 2.2 and what not just wanna see if there is any interest. Price would be $125 ported or $135 ported and polished. The porting is actually opening the TB up to 57MM. There would be a core.

I have a 57mm throttle body, the butt dyno says no results. It does make a neat whooshy sound thouh. I'll be using a vortech 75mm throttle body next with my 086 head and custom ground cams.

I can say that when I put mine on, it definitely opened the top end up. It seems that the car was restricted without it.


http://www.overkillengineeringmotorsports.com/

well i have a 2.3 TB, so i will install that and see where it gets me... i will be dynoing soon, so i will post up the results! thanks everyone!

i had a rsm 62mm and loved it.

( if you go with a gm supercharger, it will bolt right up to that with no modifaction needed to the s/c throttel body opening)

good luck

I loved my FDP Billet Aluminum LD9 65mm T/B....... worked GREAT on my Car N/A (with stock cat-back no less), as well as boosted.




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