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i need a flexplate (auto tranny) for my build i called summit and they said nobody makes one .. does anyone have a company name or part number .
 

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i need a flexplate (auto tranny) for my build i called summit and they said nobody makes one .. does anyone have a company name or part number .
try jegs,i believe they carry one...
 

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What stall coverter are you going to use ?
 

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Best for the price is GM Part # 12621399 ($57.30 from dealer)

Complete flexplate, spacer, and bolts. Makes a glide/th350/400 a direct bolt up.
 

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Best for the price is GM Part # 12621399 ($57.30 from dealer)

Complete flexplate, spacer, and bolts. Makes a glide/th350/400 a direct bolt up.


that GM part number comes with everything you need ?
 

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Yes
 

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If you are using a early 6.0L with the long crank, you just need a factory flexplate for a 99 6.0L 2500hd truck.

Ive yet to see a 6.0 gm flexplate crack (out of 100's), only the fbody LS1 flexplates.


I run a Meziere Billet One piece LS flexplate on mine...its about $400 from Jegs/Summit. THANK GOD it came with a motor I bought or I would never have spent the $ for such a nice piece.
 

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i have a 6.0 i still have to verify year(where is the date code?) but it has the short crank, the flex plate is bowed in not straight. what will i need for that to go to a th400?


is this the part number i need? just trying to be 100% sure.

Best for the price is GM Part # 12621399 ($57.30 from dealer)

Complete flexplate, spacer, and bolts. Makes a glide/th350/400 a direct bolt up.
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