SM465 tranny in a car? is it possible? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 12-03-2010, 08:34 PM
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SM465 tranny in a car? is it possible?

Well not exactly a car, it's a '52 International pickup but sits atop a modified Malibu chassis, so the ride height is quite similar to the car's, a bit higher though.

The engine is a .060 over 350 SBC full of Edelbrock's performer RPM goodies.

Right now has a 3 speed manual that I got off a 6 cylinder '62 chevy II, not sure what exactly it is, not even sure it's a GM unit, it has a strange driveshaft slip joint, I'm concerned about blowing up this little tranny and definitely will replace it.

I haven't being able to locate a 4 speed muncie which is what I want and I got this truck's mint SM465 sitting on the shop, so I was thinking, how about installing it on the truck? of course the 1st granny gear will be useless but the rest will be quite strong for the stout motor.

I have used SAE 40 and also ATF to make shifting easy with this trannies.

My concerns are of it being too low and possibly dragging on road bumps, though it rides a little higher than a car it's definitely a low rider, what do you guys think of this? is it really too low for my application? has one ever being used in a regular car?

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Old 12-04-2010, 09:58 AM
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My personal thoughts are this: Since they are both 1:1 top gear, the only thing the 465 would give you is a useless granny, so in effect you'd be replacing a 3 speed that fits with a 4 speed that doesn't - only three gears of which you can effectively use. That, plus the ground clearance issues (and custom driveshaft issues) might cause me to skip it. Seems like a lot of work for not much gain.

But... I 'm all for doing what you want, so if its something that you want to do, have at it and let us know how it goes.
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Old 12-04-2010, 11:41 AM
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what if you couldn't find a decent car transmission? would you do it? or is there any tech issues for not using it? driveshaft work is piece of cake.

I also have this tranny from a 2.8 S10 pickup but I think it will not survive the V8's torque, it's not the so called world class unit. or maybe?
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Old 12-04-2010, 01:07 PM
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In Cuba, they have to make do with whatever parts they can get their hands on, or make. There was a posting a few years back on several sites that showed some of these cars. Some were very unusual; tri fives with diesel power and truck trans, like you speak of, an old Buick with a truck I-beam front axle, and all kinds of modifications just to keep their cars running and on the road. So, your truck trans is workable, maybe not too desireable, but workable; and the Chevy II trans you have is probably an early Muncie with a 4 bolt side cover, or a Saginaw with a 7 bolt side cover.
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Old 12-07-2010, 10:04 PM
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listen to me. forget about putting this tranny into your truck okay? now say 'thank you bullheimer'. go have a smoke, think about something else. like, oh, maybe a CAR transmission in your 2 wheel drive malibu?? dont even ask me what tranny i have in this truck, you know the answer. now, smoke your little smoke.

i knew i could help somebody here today if i looked long enuf.
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Old 12-08-2010, 08:25 AM
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why? what could go wrong?
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