http://www.fuelairspark.com/Base/Images/Products/HiRes/LSXThrottleBody_001.jpg

i know it wont mount up without an adapter but what im wondering if our tps/drive by wire connectors will plug into this

its over 3.5 inches (90mm).....Thats A Huge Bitch !

Interesting, any info about this thang? Is it for Cobalt SS/SC?

hello no, its for a ls2- reason why i was thinking it might be plug and play was cause its made for a chevy (corvette) and i know that lots of manufacturers use the same sensors across model lines ... the amount of work it would take to make this work on a cobalt would be extensive and offer little gains with a m62

i bet rob would know, hope i can get him to chime in..

anyone?

I spoke with Rob (Fast06) about this months ago. He said tuning wise an LS2 TB would work, but it is way too large to do any good with the M62.

it looks like it uses a fly by wire, so how would we use it?

it looks like it uses a fly by wire, so how would we use it?
That is probably a representative pic. The LS2 TB's are drive-by-wire

I spoke with Rob (Fast06) about this months ago. He said tuning wise an LS2 TB would work, but it is way too large to do any good with the M62.


what makes you think ill be using a m62 ? ;)

If the picture is representative, then that throttle body is mechanical. The electrical hook up on the side is for the idle air bypass solonoid. Even if you did adapt it to fit, a 90mm throttle body would really slow down the air flow. Its like putting too big of a carburetor on an engine. It reduces performance, not improve it.

If the picture is representative, then that throttle body is mechanical. The electrical hook up on the side is for the idle air bypass solonoid. Even if you did adapt it to fit, a 90mm throttle body would really slow down the air flow. Its like putting too big of a carburetor on an engine. It reduces performance, not improve it.


true most folks wont get any use out of a throttle body this large...

I spoke with Rob (Fast06) about this months ago. He said tuning wise an LS2 TB would work, but it is way too large to do any good with the M62.

Basically.

Also, with a larger throttle body, you still have to think about intake velocity cause it is still seeing "natural airflow", not highly pressurized airflow (above atmospheric pressure).

Basically.

Also, with a larger throttle body, you still have to think about intake velocity cause it is still seeing "natural airflow", not highly pressurized airflow (above atmospheric pressure).
Exactly. Not to mention that it will be more difficult to find a low RPM TB position since the slightest movement will allow significantly more airflow. It will make the lower RPMs very jumpy and difficult to smoothly control.

Exactly. Not to mention that it will be more difficult to find a low RPM TB position since the slightest movement will allow significantly more airflow. It will make the lower RPMs very jumpy and difficult to smoothly control.

Bingo.

(I like the way you think ;) )

Bingo.

(I like the way you think ;) )
I've read a few books that have enlightened me of the importance of proper TB, intake, and exhaust sizing since I talked to Rob about it.

I've read a few books that have enlightened me of the importance of proper TB, intake, and exhaust sizing since I talked to Rob about it.

Could you send me the names of those books via PM? I'd really like to look into them, I've been in a reading mood. I've just finished reading this book about Turbochargers in every aspect...finished it in 2 days ;)

Yeah, I'll send them to you Tuesday, I should have been in bed a couple hours ago. If you don't have them by midnight (your time) Tuesday send me a reminder. Things have been slipping my mind lately.

okie dokie

way overkill even the GM drag cars only use a 75mm LS1 Tb

75mm LS1 t/b is more than you'll ever need on a GM 4cyl. However, as a side note, the 75mm LS1 t/b is not THAT jumpy at part throttle/lower rpms, you get used to it, and can drive it like any other car. It's just a lil bit of a learning curve.

I'm using it on a turbo Quad 4 though, so results may vary on jumpiness of the throttle.

that thing looks sick dude...it is huge!!!! is that for the ss/sc or no???

hello no, its for a ls2- reason why i was thinking it might be plug and play was cause its made for a chevy (corvette) and i know that lots of manufacturers use the same sensors across model lines ... the amount of work it would take to make this work on a cobalt would be extensive and offer little gains with a m62

read the post and you shall receive.

bringing back an old post ...i guess the ls2 doesnt fit but the ls4 does, anyone confirm ??