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Transmissions and Rear Ends Three on the tree or four in the floor? Shift it all here.

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  #11  
Old May 28th, 2019, 02:53 AM
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LEWISMATKIN LEWISMATKIN is offline
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Default Re: Hydramatic Repairs

great idea James. however, the manual you found is for the 315 hydramatic (commonnaly called the Jetaway or controlled-coupling hydra-matic) and was never installed in a truck. It came in 1956-60 oldsmobiles, 1956-64 cadillac & pontiac automobiles.
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  #12  
Old May 28th, 2019, 10:40 AM
James James is offline
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Default Re: Hydramatic Repairs

I did not know that. Thanks for the update.
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  #13  
Old July 10th, 2019, 02:46 PM
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Default Re: Hydramatic Repairs

OK, we decided upgrade and change the tranny out to a 700R4 (non-electronic) We have a source (unless one of the club members has a good one they want to sell. However, I will neet a cross member.

Does anyone have a suggested part number so I can begine a search.

Thanks
Jake
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  #14  
Old July 10th, 2019, 09:11 PM
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Default Re: Hydramatic Repairs

The crossmember is easy, Have you already determined the bellhousing/flexplate, shift linkage, driveshaft yoke/length and overall adapting procedure to a 305? With all the hearsay, urban legend stories and different "adapters", I would sure mock it up or take your adapters and try them on a 700r4....... and try it on your motor before buying a bunch of stuff and find out it won't work. Unless, of course, you know what you are doing.

Buying things on ebay for a V6 from someone who says it fits is no guarantee. Little is posted about 700r4 to V6. Check with Lewis Matkin, Ed Snyder, BigBlockV6 and GMCNUT. I have yet to read a trusted 700r4 to V6 story. But I could have missed it.

Anyway, I like this kind because they are modifiable and bolt on. There are several versions and many sellers of this tubular type.

My experience (not V6) is: I buy a running trans for $100-300, get it rebuilt for $300-400. Sometimes I take a chance and run it without rebuild, just refreshed. There are lots of very experienced, retired or health issue or Military Vet, trans mechanics who work from home.

The 700r4 is a very good choice. The theory would be that all these "Chevy" transmission's have the same bolt patterns for tranny and torque converter, so adapter parts will work for them all.

Last edited by AZKen; July 10th, 2019 at 11:24 PM.
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  #15  
Old July 11th, 2019, 02:13 PM
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Default Re: Hydramatic Repairs

Hi AZ,

I was able to score on the needed adaptor for upgrading to a more modern to bolt up to the V-6 (THANK YOU ED SCHNIDER FOR LOCATING IT!) I too would like to save funds, but I think I’m stuck with having to pay someone to install it, I simply do not have needed experience NOR lift. I’m trying to find a local good installer. I really only want to do this once, the trans should last the life of the truck. Checking several sites for 700R4 (Summit, TDI, etc) they are in the avgerage range from $995- $1300), you also have to make sure they come with the torque converter or you’re out another $150-200. I found some deals on eBay from Jegs/Summit, shipping is free. I just have to wait till Sept to do the deal.


I saw that adaptor and suspected it would work too, but never having bought one, its ALWAYS good to opinions.
Thanks

Last edited by jbgroby; July 12th, 2019 at 01:14 PM.
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