C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Guys with the PP 52mm TB

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Old Apr 4, 2010 | 02:40 PM
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From: Grand Sport #82
Default Guys with the PP 52mm TB

I am in the middle of installing my new Professional Products 52mm TB.
The instructions says to reuse the original TPS screws, but the threaded holes in the new TB is way to small for the screws...

Anybody else had that problem?

Also, why didn't they make the bolt pattern for the top plate the same as the stock. Its just a tad different, PITA IMO.
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Old Apr 5, 2010 | 01:15 AM
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Originally Posted by Lars87
I am in the middle of installing my new Professional Products 52mm TB.
The instructions says to reuse the original TPS screws, but the threaded holes in the new TB is way to small for the screws...

Anybody else had that problem?

Also, why didn't they make the bolt pattern for the top plate the same as the stock. Its just a tad different, PITA IMO.
I hate to say it,but don't bother adding a bigger TB.Your stock one is more than adequate and there's no bolt up troubles.I went through this myself years ago and went back to stock.No use trying to make some aftermarket unit fit or work and no real gains from it.

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Old Apr 5, 2010 | 02:08 AM
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Did you order a lt1 or TPi model t-body ?
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Old Apr 5, 2010 | 05:47 AM
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From: Grand Sport #82
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Originally Posted by Aggravated4life
I hate to say it,but don't bother adding a bigger TB.Your stock one is more than adequate and there's no bolt up troubles.I went through this myself years ago and went back to stock.No use trying to make some aftermarket unit fit or work and no real gains from it.

I know there isent much gain in a 52mm for me, but it looks good polished up IMO.
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Old Apr 5, 2010 | 05:49 AM
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From: Grand Sport #82
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Originally Posted by turbopezz
Did you order a lt1 or TPi model t-body ?


ordered a LT1 model. Its comes with the throttle cable bracket for both types, so I do not think it matters.
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