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Post Info TOPIC: S10 T5 transmission mated to 60 Pontiac 261


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S10 T5 transmission mated to 60 Pontiac 261


I have swapped a 261 into my 39 Chevy to replace the original 216.  Initially I intended to use the original Muncie II 3 speed tranny that came with the engine but I have been thinking of using an S10 T5.  Does anyone have experience with such a swap and if so what issues would have to be addressed?  Thanks for any assistance.  Gary Hammond, Lockport, MbIMG_3078.JPG



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Canadian Poncho Superstar!

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Gary, i love that sweet 261 in liner of yours.......... what a beauty. I can see from the photo that you have done all the right stuff to update that sturdy work horse. A number of years ago i knew an older gent that did the very same conversion you speak of on his 261 that was in a 1939 Pontiac coupe. He lived in southern Ontario and he was already in his seventies. I have lost track of him or i would pass on the information to you. Good luck with the project and please keep us posted here on C.P. Cheers. 



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1957 Pontiac Pathfinder Deluxe sedan restored 261 six

1974 Chevrolet Caprice Estate wagon low mileage original 400 V-8



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A friend did this years ago on a 65 Chevy pickup. He had to buy a spacer plate as the T5 input shaft was longer. Here is a link to one manufacturer, but there are several if you do a search for t5 spacer plate.

www.hotrodworks.com/product/1955-and-later-chevrolet-passenger-t5-transmission-adapter/

Paul

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Thanks Paul: I will look into your suggestion. Hopefully the the spline on the T5 will fit through the clutch. Still more research to do.

Gary

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Poncho Master!

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E1B84923-5D14-4ED6-9706-0825F44D6C93.png943BA57B-ED2D-4CF2-93FB-A811A65D6F5E.png



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pontiax- (canadian pontiac X frame)1964 Parisienne 2dr. hdtop lagoon aqua metallic (Q)

 



Canadian Poncho Superstar!

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long stroke wrote:

Gary, i love that sweet 261 in liner of yours.......... what a beauty. I can see from the photo that you have done all the right stuff to update that sturdy work horse.


 x2. A work of art!



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.



Canadian Poncho Superstar!

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You will likely have to change clutch or disc to match up with T5 spline. You will love the 5 speed, I had Tremic 5 speed in my 51 Pontiac Torpedo Back with SBC and was great hwy. cruiser, & hauled "a$$" when you "got on it"!!!

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I joined the PROCRASTINATOR club last year,we still haven't had a meeting yet.    !!!!!!!! BLACKSTOCK Ont.



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There's lots of info out there. I had one ready to put into my truck but my wife wouldn't let me take the truck apart.... I had a machinist buddy lop off about 3/4" off the input shaft, about the same off the front bearing collar, and the bottom two holes had to be opened up to 1/2" This eliminated the need for the adaptor plate. Tranny was out of an early S-10. Clutch was for a 5 speed Astro/Safari van. It all fit great behind a motor I had sitting in a 56 Pontiac frame.

Disclaimer - the amount cut off the shaft and collar are to the best of my memory and are close. I followed these threads. Measurements are in there somewhere....

www.jalopyjournal.com/forum/threads/transmission-t5-tech-links.169265/

www.jalopyjournal.com/forum/threads/chevy-235-to-t5-trans.242579/



-- Edited by mr57 on Monday 15th of February 2021 08:38:39 PM

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