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I have a 1980 Chevy 305

Tiny
ANONYMOUS
  • MEMBER
  • 1980 PONTIAC TRANS AM
I have a 1980 chevy 305. Trans am. And I recently put a 1992 camaro rs 305 Chevy block in it. But I'm stuck on what flex plate I need to buy for the new motor to work correctly. I bought one from a junkyard and its cracking and I'm in need to buy new and can't find a correct flex plate to work please help?
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Sunday, December 9th, 2012 AT 3:23 AM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What about the old one from your old motor?

Roy
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Sunday, December 9th, 2012 AT 3:25 AM
Tiny
JUSTINPEDDICORD
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The crankshaft diameter is a half inch different and doesn't line up.I went to oreiley's and they pulled out both years flex plates. The flex plate I have now I'm not sure wats its off of because Igot it from the junkyard
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Sunday, December 9th, 2012 AT 3:33 AM
Tiny
ASEMASTER6371
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Do you have the vin from the 92? If so, call the dealer for the correct flywheel

Roy
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Sunday, December 9th, 2012 AT 3:35 AM
Tiny
JUSTINPEDDICORD
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Thanks for replying back. But ya I don't have the vin. Just know it was a 92 camaro rs 305 Chevyblock. Just have no clue what the flex plate I currently have is off of to get a new one. The 80 crank is a half inch wider then the 92 so the bolt pattern doesn't line up on an 80 flex plate. And the 92 is 12" wide /80 is 14" wide idk
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Sunday, December 9th, 2012 AT 3:44 AM

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