427carl wrote:

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rebelrouser wrote:

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Would that tranny fit/work behind an American 389?

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         Pontiac transmission    (trannys have their own websites)

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 Oh Carl, you are getting bored.  I am seeing numbers appearing beside the picture of your Camaro.

racer6929 wrote:

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Jerel, think that's "hay, whut'm I bid, now 75, er, 76, I think it's a neat ride, just not for me..and now back to our original program and the tri power w/hydro..

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 Watching the auction this week is rubbing off on him.  I am bad at derailing.

jmont64 wrote:

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427carl wrote:

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rebelrouser wrote:

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Would that tranny fit/work behind an American 389?

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1957 GMC 347 Pontiac question    Hey guys does anyone know what trans will mount up to a 1957 347 GMC? It has a Hydra-Matic in it now. Also would a tri-power set up work with that motor being its a truck motor with a long stroke? What are my options? I would like to keep it as original as possible but able to run hwy speeds.

 

08-03-2012, 07:19 AM

#2

Hnstray Alliance Member     Join Date: Aug 2009 Location: Quincy, IL Posts: 4,676

Re: 1957 GMC 347 Pontiac question For transmission options, I think you are pretty well stuck with the stock automatic or the factory stick shifts used in GMC and Pontiacs of that era UNLESS you buy a trans adapter. Try Bendtsenswww.transmissionadapters.com or Wilcap www.wilcap.com .  As for the "long stroke truck motor".......it's the same bore/stroke 347" used in the '57 Pontiac cars. Compression ratio and camshaft specs may be differ from the car applications, but not the stroke. Ray