DBW to DBC conversion?
Thread Starter
Teching In
Joined: Apr 2006
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From: spokane washington
DBW to DBC conversion? I have a 90mm TB off a 2005 LS2 and I want to get rid of the DBW and go with a cable. Does anyone make a conversion kit? Or is it better just to buy one? Thanks
If you are trying to convert the dbwthrottle body you have to cable operated it isnt going to happen, at least easily that is. Just buy a85mm truck cable operated one for cheap. Besides TB is probably the smallest gain of hp bolton you can do. Buy some hard parts (cam heads intake) those parts will have you feeling it in the seat of your pants!
I second what GARY said. Also make sure the tune is compatible.
Jon
PSI
Jon
PSI
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Thread Starter
Teching In
Joined: Apr 2006
Posts: 27
Likes: 0
From: spokane washington
Thanks guys. What i have is a 2003 6.0L. I just bought an LS2 intake with injectors and fuel rail with the DBW tb. The 6.0 did not come with a wiring harness, so I bought one that came off a 2000 SS. The motor is going in a 1970 nova with a TH400 and twin turbos. I still don't have a pcm. Every other part i have. If i buy a good aftermarket 90mm tb the 2000 ss wiring harness should work shouldn't it? Maybe a few changes. What about a PCM? Thanks
LS2 engines were not available til 2005. Do you have an iron block LQ 6.0 motor?
If so a 99-02 fbody harness will work ( I assume that's what you mean by your 00 SS harness).
You'll need an ecu capable of operating DBC. The 411 ecus work with your 24x reluctor motor and DBC.
You'll need an aftermarket 4 bolt cable TB to work with your LS2 intake. Or you can use a 3 bolt adapter and an LS1 TB.
Youl'll also need pgtails for the LS2 injectors.
I dont think the LS2 intake ever came with an IAC so you'll have to mod something for that.
If so a 99-02 fbody harness will work ( I assume that's what you mean by your 00 SS harness).
You'll need an ecu capable of operating DBC. The 411 ecus work with your 24x reluctor motor and DBC.
You'll need an aftermarket 4 bolt cable TB to work with your LS2 intake. Or you can use a 3 bolt adapter and an LS1 TB.
Youl'll also need pgtails for the LS2 injectors.
I dont think the LS2 intake ever came with an IAC so you'll have to mod something for that.
Thread Starter
Teching In
Joined: Apr 2006
Posts: 27
Likes: 0
From: spokane washington
LS2 engines were not available til 2005. Do you have an iron block LQ 6.0 motor?
If so a 99-02 fbody harness will work ( I assume that's what you mean by your 00 SS harness).
You'll need an ecu capable of operating DBC. The 411 ecus work with your 24x reluctor motor and DBC.
You'll need an aftermarket 4 bolt cable TB to work with your LS2 intake. Or you can use a 3 bolt adapter and an LS1 TB.
Youl'll also need pgtails for the LS2 injectors.
I dont think the LS2 intake ever came with an IAC so you'll have to mod something for that.
If so a 99-02 fbody harness will work ( I assume that's what you mean by your 00 SS harness).
You'll need an ecu capable of operating DBC. The 411 ecus work with your 24x reluctor motor and DBC.
You'll need an aftermarket 4 bolt cable TB to work with your LS2 intake. Or you can use a 3 bolt adapter and an LS1 TB.
Youl'll also need pgtails for the LS2 injectors.
I dont think the LS2 intake ever came with an IAC so you'll have to mod something for that.
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On cable TBs idle is controlled by the idle air control valve (IAC) on the side of the TB. DBW TBs use the actual throttle blades to control idle.
I'm not sure, but I dont think GM ever made a 4 bolt LS2 cable TB with IAC. Not sure if aftermarket LS2 cable TBs use a stock IAC either.
I'm not sure, but I dont think GM ever made a 4 bolt LS2 cable TB with IAC. Not sure if aftermarket LS2 cable TBs use a stock IAC either.
Last edited by garys 68; Dec 6, 2011 at 03:42 PM.
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Verdad Gallardo Thread Starter
Teching In
Joined: Apr 2006
Posts: 27
Likes: 0
From: spokane washington
On cable TBs idle is controlled by the idle air control valve (IAC) on the side of the TB. DBW TBs use the actual throttle blades to control idle.
I'm not sure, but I dont think GM ever made a 4 bolt LS2 cable TB with IAC. Not sure if aftermarket LS2 cable TBs use a stock IAC either.
I'm not sure, but I dont think GM ever made a 4 bolt LS2 cable TB with IAC. Not sure if aftermarket LS2 cable TBs use a stock IAC either.
As far as I know, GM did not make a 4 bolt throttle body with DBC. Some aftermarket throttle bodies, Edelbrock for instance, have universal bolt pattern (3 and 4 bolt pattern) and include the IAC and TPS. Bolt sensors are stock replacement.
Jon
PSI
Jon
PSI
__________________
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
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'Dont Let EFI Pass You By!'
Your Source for LSX Conversion Parts!
www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Thread Starter
Teching In
Joined: Apr 2006
Posts: 27
Likes: 0
From: spokane washington
Thanks Jon. Everyone has really good info (and parts) that will and is helping me with this build. I appreciate all the help. Thanks!
Staging Lane
Joined: Nov 2019
Posts: 76
Likes: 2
From: Yorktown, VA
Sorry to resurrect an old thread but I have been thinking of utilizing the stock pedal in my 1986 K10 that I am installing an LM7. I got a throttle body, blue/red connectors, and PCM from a junkyard truck. I plan to follow the wiring/pinout info on the LT1Swap website. Do I understand correctly that the IAC and TPS are contained in the throttle body? I want to make sure I don't have to remove/install anything else on the intake manifold.
Andrew
