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Old 01-31-2005, 04:42 PM
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4 spd Transmissions

Howdy Folks!!!

Have a question for the braintrust.

I have a '70 GMC pu....250 I-6 with 3 spd..... .411 rear.
I'd like to put a 4 spd tranny in it....just to have a little fun, as well as putting a V-8 in the future. Which trans would be best? I know names like Muncie....Saginaw....but other than that....I know how to turn nuts and bolts. Also asking about bellhousing, clutch / P Plate.....ect. Shifter recomendations also please.

Anyone help?

Billy G

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Old 01-31-2005, 05:15 PM
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As far as I know most GM application 4 speeds would bolt right in to your truck..Now I woudl be careful of any I found at a swap meet or used as a lotof them have been beat up and need rebuild..

In that case you may be way ahead of the game to get something like a Richmond Super T-10 that has the good gears and bearings in it from the get go and that has a better chance of standing up to a big V-8..

As far as bellhousing clutch an such the ones you have shoudl work fine..may need to put in a fresh disk..rebuilt pressure plate and have the flywheel turned..

Just my 2 cents on these..

I have tried most all of it and now do what is known to work..
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Old 02-01-2005, 12:40 AM
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Be sure the front bearing retainer on the trans is the same diameter as the big hole in the back of the bellhousing. Some cars & trucks used different sizes.
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