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Author Topic: Drawings for rear of GMC 302 or Chevy 235 for trans adapter needed  (Read 767 times)

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Offline Hans Blom

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Good day! I was wondering if anyone has the dimensions of the rear of a GM six to make an adapter.  I need to make a custom adapter for various tranny options. I asked over on the Inliner site as well to cover my bases.

Thanks for any help!

Hans

Offline fastman614

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Re: Drawings for rear of GMC 302 or Chevy 235 for trans adapter needed
« Reply #1 on: January 26, 2020, 11:52:05 AM »
Hi - I see that you posted several months ago nobody has gotten back to you. I do not have the dimensions or an adaptor plate but I could walk you through how to do it yourself.  I have made an adaptor or two over the decades. You could probably "get away with" using a good drill press although a milling machine would be preferable.

Or, alternatively, did you find someone who had what you needed already?

Either way, best of luck!
No s*** sticks to the man wearing a teflon suit.

Offline John Bjorkman

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Re: Drawings for rear of GMC 302 or Chevy 235 for trans adapter needed
« Reply #2 on: January 26, 2020, 01:16:34 PM »
Here is a drawing of the block bolt pattern for a small block Chevy

Hope it helps

Offline ggl205

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Re: Drawings for rear of GMC 302 or Chevy 235 for trans adapter needed
« Reply #3 on: January 26, 2020, 03:00:27 PM »
Hans:

If you know somebody that is a member of the Automotive Engine Rebuilders Association (AERA) and has access to PROSIS engine spec software, they should have factory blueprints of the engine in question.

John

Offline Speed Limit 1000

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John Gowetski, red hat @ 221.183 MPH MSA Lakester, Bockscar #1000 60 ci normally aspirated w/N20

Offline jimmy six

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Re: Drawings for rear of GMC 302 or Chevy 235 for trans adapter needed
« Reply #5 on: January 26, 2020, 06:05:41 PM »
I've bought 3 from Buffalo Enterprises in Washington. Great product that fits. He will also do a starter ring gear to the crank flange if you want. He advertises in the Inliners periodical the 12 Port News.
« Last Edit: January 26, 2020, 06:11:30 PM by jimmy six »
First GMC 6 powered Fuel roadster over 200, with 2 red hats. Pit crew for Patrick Tone's Super Stock #49 Camaro