Flex plate

1970 BUICK ELECTRA
160,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
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GRAYED786
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Trying to figure out what flex plate makes a 2000 Chevrolet 5.3 engine compatible with a 1970 Buick 400 transmission?
Mar 8, 2021 at 1:25 PM
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STEVE W.
  • ✓ASE Certified Mechanic
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You will probably need a custom part as you will need to use an adapter plate between the transmission and engine so the bolt patterns will work. Then you need the plate to match the engine so the ring gear will work with the starter. Finally it will depend on which converter you use as it will need spacers and a bit of work to set the nose depth properly in the transmission pump. Summit or Jegs might have an adapter plate that would work.
Mar 8, 2021 at 5:32 PM
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