GM Ls2 Throttle Body
Thread Starter
4th Gear
Joined: Mar 2011
Posts: 4
Likes: 0
GM Ls2 Throttle Body
Hello Corvette Forum!
I'm new here and i've got a little problem that I might think some one of you might be able to help me solve.
I've got a C5 -03 with a F.A.S.T. Intake Manifold (Wilson[?]) and the throttle body I had installed before had a circumference of 92mm.
Now, what is the difference of a 'fly-by-wire' and a cable-driven one, and where can I find a 'fly-by-wire' throttle body with a cicumference of 92mm...? (Cause the 'fly-by-wire' is the one that a workshop tells me i need, because of my engine type being a 'fly-by-wire') This may sound retarded but I've no idea of what I am actually speaking on about now, all I want is that my vette will be up'n'runnin this summer. So all I need is a new throttle body with a cicumference of 92 mm that works with my F.A.S.T. Wilson intake manifold..........
I'm new here and i've got a little problem that I might think some one of you might be able to help me solve.
I've got a C5 -03 with a F.A.S.T. Intake Manifold (Wilson[?]) and the throttle body I had installed before had a circumference of 92mm.
Now, what is the difference of a 'fly-by-wire' and a cable-driven one, and where can I find a 'fly-by-wire' throttle body with a cicumference of 92mm...? (Cause the 'fly-by-wire' is the one that a workshop tells me i need, because of my engine type being a 'fly-by-wire') This may sound retarded but I've no idea of what I am actually speaking on about now, all I want is that my vette will be up'n'runnin this summer. So all I need is a new throttle body with a cicumference of 92 mm that works with my F.A.S.T. Wilson intake manifold..........
Racer
Joined: Feb 2011
Posts: 478
Likes: 0
From: San Antonio TX
Heres a link to one of our CF vendors that sells a plug and play 92mm TB, Most C5s come fly by wire, it means that there is no cable going from your gas pedal to your throttle body that opens it when you push down. Instead, there is a sensor on your pedal that detects how far you push, and then sends a signal through a wire to your TB telling it to open in the amount youve signaled via the pedal. F-bodies and GTOs have the old cable setup instead.
http://forums.corvetteforum.com/c5-t...ale-350-a.html
http://forums.corvetteforum.com/c5-t...ale-350-a.html
Thread Starter
4th Gear
Joined: Mar 2011
Posts: 4
Likes: 0
Problem numbah dos; I'm Swedish and will have to ship over here. Any other vendor/salesman that got it. I'd like to have the F.A.S.T. TB but if that dosen't work i'll have to take an original one or of any other brand. As long as I can get it shipped to Sweden.
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 29
From: Vancouver Washington
http://sdparts.com/catalog/873/LS1-L...ance-Parts.htm
Thread Starter
4th Gear
Joined: Mar 2011
Posts: 4
Likes: 0
Can anyone help me find a throttle body that is of a 'fly-by-wire' construction that works with my FAST 92 mm intake manifold. With all the stuff included. Of all the different TBs I've found there have not been any info whether it is a cable driven or a FBW construction of it. So if anyone could be so nice and try finding me a one that works with my setup I'd be very thankful.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Santrik
- What other modifications does you engine have??
- What are your performance goals??
You can purchase a PORTED LS2 Corvette TB. Porting significantly improves throttle response and helps it flow better. You’re not going to gain anything with an aftermarket TB. An LS2 TB Ported or un-ported will work excellent.
If you just want a non ported TB, there very easy to get and install in a few minutes.
Any TB that you install along with the FAST 90, will most likely need PCM TUNING to make it run correctly!
If you don’t get it tuned, you may have some idle issues, part throttle issues and flat spots during acceleration..
Yes you will need the conversion harness.. Its a simple harness that converts the TWO connectors on the LS1 engine into ONE for the LS2 TB. I got mine from CASPER
I will add some pictures later tonight...
Do you have access to tuning software or professional tuners up there in the Swedish TUNDRA??
You may want to "relocate" the Manifold Absolute Pressure Sensor (MAP) to the front of the manifold. It makes life easier.. Its also an easy conversion and works very well.
Bill
- What other modifications does you engine have??
- What are your performance goals??
You can purchase a PORTED LS2 Corvette TB. Porting significantly improves throttle response and helps it flow better. You’re not going to gain anything with an aftermarket TB. An LS2 TB Ported or un-ported will work excellent.
If you just want a non ported TB, there very easy to get and install in a few minutes.
Any TB that you install along with the FAST 90, will most likely need PCM TUNING to make it run correctly!
If you don’t get it tuned, you may have some idle issues, part throttle issues and flat spots during acceleration..
Yes you will need the conversion harness.. Its a simple harness that converts the TWO connectors on the LS1 engine into ONE for the LS2 TB. I got mine from CASPER
I will add some pictures later tonight...
Do you have access to tuning software or professional tuners up there in the Swedish TUNDRA??
You may want to "relocate" the Manifold Absolute Pressure Sensor (MAP) to the front of the manifold. It makes life easier.. Its also an easy conversion and works very well.
Bill
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
Will an LS2 TB with the harness work on a stock LS6 intake manifold? Or for the cost maybe a ported stock TB from my LS1 with an LS6 intake manifold would be better "bang for the buck"?
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Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
To OP..agree with Bill. You can't do much better than a LS2 TB, and they're cheap if you check around. Of course they will ship to Sweden; it's not the moon.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Ok.. Heres a LS-1 / LS-6 Throttle Body:
Heres a picture of a ported LS-2 TB:
Heres MY 02 ZO6 with a home ported FAST-90 and Home Ported 90mm TB. It also has a MAP Relocation Kit installed:
Heres a picture of a ported LS-2 TB:
Heres MY 02 ZO6 with a home ported FAST-90 and Home Ported 90mm TB. It also has a MAP Relocation Kit installed:
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
The C6 Throttle Body opening has a ridge in the opening (Front and back) to help direct the air at minimal throttle openings. When you port the TB, the opening/s are contoured (that ridge removed and the opening smoothed) to improve air flow at all throttle openings.
The total TB opening / throttle blade diameter is NOT altered.
The total TB opening / throttle blade diameter is NOT altered.
