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LS1 to TH350 Flexplate Kit

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LS1 to TH350 Flexplate Kit

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What's in the Box

If you want to bolt a TH350/TH400 up to your LS1 based engine, you need this kit. The spacer properly positions the flexplate and supports the converter hub. Includes flexplate, spacer and special bolts.

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Product Q&A

1 questions : 1 answers

will this work with a 1972 buick transmission I'm going to put a ls1 in a 1972 buick skylark and I want to use the factory 1972 buick transmission. Do I need a adapter plate to bolt that transmission to the LS1 engine or will it bolt directly up?

1 answers
Pippin
Goldsboro, NC, USA
January 27, 2015

will this work with a 1972 buick transmission I'm going to put a ls1 in a 1972 buick skylark and I want to use the factory 1972 buick transmission. Do I need a adapter plate to bolt that transmission to the LS1 engine or will it bolt directly up?

Answers

January 30, 2015
Tech
Yes you would need to use the adapter plate part number 91628908
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If you want to bolt a TH350, TH400, Powerglide, and 700R4 transmission up to your LS-Series engine, you need this kit. The spacer properly positions the flexplate and supports the converter hub. For Turbo 350, Turbo 400, and 700R4 transmission application.

SFI 29.1 approved. Dual bolt patterns: stock LS-Series and small GM bolt pattern.

Kit includes:

  • dual bolt pattern SFI rated flexplate
  • flexplate spacer
  • flexplate to crankshaft bolts
  • instructions

Note: Requires a 10-1/2" bolt circle converter.