Throttle body replacement
Thread Starter
5th Gear
Joined: Dec 2012
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Throttle body replacement
I am trying to replace my throttle body with a slightly larger one on my 2004 Corvette. I have the 5.7L engine. On the drivers side of the throttle body is a drive motor which drives the gear on the throttle body. I cannot seem to disconnect this from the throttle body to transfer it to the new one. Any suggestions? It appears to be held in place by four bolts that have star shaped heads but I can't find a tool to match up. It is a special tool?
Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
If I remember (and I have a bad memory) it is a torx with a small "pin" in the middle that will not allow a "standard" torx to be inserted. It is a "special" tool that has a small hole in the torx for that pin.
Just out of curiosity , have you made enough mods to justify a bigger TB? The stock one flows pretty good.
Just out of curiosity , have you made enough mods to justify a bigger TB? The stock one flows pretty good.
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
If the screws are like the ones used on the LS2 TB, they are not a regular "Torx", which is 6-point.
The LS2 TB uses a 5-point fastener. If it has the pin in the middle (which most do that I have seen) it is called "Tamper Resistant TORX Plus". OTC makes a set of bits for use on 1/4" and 3/8" drive ratchets. Part #5905.
https://www.google.com/url?sa=t&rct=...Ue8Ep0DjSIBnDw
Example:
Regular Torx, size 15 = "T15"
5-point Tamper Resistant Torx PLUS, size 15 = "IPR15" (Some refer to this as "TP15")
Complicated, I know.
The LS2 TB uses a 5-point fastener. If it has the pin in the middle (which most do that I have seen) it is called "Tamper Resistant TORX Plus". OTC makes a set of bits for use on 1/4" and 3/8" drive ratchets. Part #5905.
https://www.google.com/url?sa=t&rct=...Ue8Ep0DjSIBnDw
Example:
Regular Torx, size 15 = "T15"
5-point Tamper Resistant Torx PLUS, size 15 = "IPR15" (Some refer to this as "TP15")
Complicated, I know.
Last edited by LoneStarFRC; Oct 1, 2014 at 12:22 PM. Reason: add info
Thread Starter
5th Gear
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Team Owner
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
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Melting Slicks
Joined: Oct 2010
Posts: 3,017
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From: Tollesboro Kentucky
If you have a Harbor Freight close by,they carry a complete set of torx security bits along with almost any other bit you would need for about $10.Standard torx won't work due to the security pin in the center.
Melting Slicks
Joined: Nov 2003
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From: Dublin GA
I would spend my money on something else
Last edited by Blow Torch; Oct 2, 2014 at 11:41 AM.
Drifting
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From: Bahama North Carolina
Drifting
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From: in ur mirror, 'bout to pass.. CA
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
When you modd the air flow thru the engine you will need a professional TUNE,,,, ($400-$500) So,,,,,,,,,,,,,,, Ide skip messing with the TB until you do signifcantly more Mods.
BC