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T-Top pin size

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Old 01-17-2016 | 09:58 PM
  #1  
hotrodjames's Avatar
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Joined: Aug 2004
Posts: 62
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From: Corona, CA
Car: 89 IROC-Z
Engine: 5.7 liter
Transmission: 700r4
Axle/Gears: Stock
T-Top pin size

Were there different pin sizes on T-tops? I bought 2 on ebay and there not the same size. I thought they were all the same.
Old 01-18-2016 | 07:20 PM
  #2  
DynoDave43's Avatar
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From: MICHIGAN
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: T-Top pin size

Wouldn't mind knowing that myself.


I knew there were "factory" and C&C tops, and glass and plastic tops ( and I think those have different pins). But you have found a difference withing a given category?
Old 01-18-2016 | 07:34 PM
  #3  
Zane M's Avatar
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From: SLC, UT
Car: 1991 GTA
Engine: LB9
Transmission: T5
Re: T-Top pin size

Yes, there were two sizes of pins used.
I don't know what year things actually changed, but my '91 had a "large" pin set up.
When I got used replacement tops of unknown vintage, they were "small" pin.
I simply changed the mounting hardware attached to the car to the appropriate sized units. You could also change the pins on the tops, but that is more work.
Old 01-25-2016 | 03:24 PM
  #4  
John in RI's Avatar
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From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: T-Top pin size

I simply changed the mounting hardware attached to the car to the appropriate sized units.
Pretty sure the body mounted brackets are the same size - regardless of the type of T-Top. Big or small pin tops will mount to any pin-type hardware. ( Obviously not compatible with the early HOOK type T-Tops ! )

Early mounts:


Late mounts:



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