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Old 10-10-2021, 09:23 AM   #1
GOPAPA
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I just bought this 83 K10 and it has a 4 speed

Muncie transmission .. I got what I think is a good deal and decided to buy this one and go back to my shifting days ..

I do have a question though,, are these Muncie sm 465 4 speed transmissions going to give me a hard time shifting a lot in the city where it's stop and go between lights?

It has been a long time since I have had a manual transmission ,,but I read that these have a wait time between shifting gears up and down

Any thoughts on this ?

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Old 10-10-2021, 11:15 AM   #2
Getter-Done
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Re: I just bought this 83 K10 and it has a 4 speed

I have never noticed a big wait time.
They are not like the 4 speeds found in cars though.
It's not a (Speed) shift transmission

1st gear is not a syncro'd gear. 2nd, 3rd and 4th are synchronized.
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Old 10-10-2021, 11:18 AM   #3
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Re: I just bought this 83 K10 and it has a 4 speed

Just drive it and see what you think.

The worst thing about stop and go traffic is the constant clutch pedal usage. A slow 2nd/3rd shift is not as big of a deal. Other transmissions will shift faster, but you'll still have to use the clutch.

Converting to a 85-87 hydraulic clutch would make the pedal effort easier, and supposedly converting to an internal slave/release bearing would make it easier yet.
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Old 10-10-2021, 12:35 PM   #4
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Re: I just bought this 83 K10 and it has a 4 speed

Daily driver ? If so and your in heavy traffic a lot….it will get old fast.

I have a couple of trucks with the SM465 and they seem to be damn near bulletproof proof. One of them (84 K30) has a 460HP big block in it and I drive the hell out of it, I shift it as fast as I can, which is not very fast

Nice truck


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Originally Posted by GOPAPA View Post
Muncie transmission .. I got what I think is a good deal and decided to buy this one and go back to my shifting days ..

I do have a question though,, are these Muncie sm 465 4 speed transmissions going to give me a hard time shifting a lot in the city where it's stop and go between lights?

It has been a long time since I have had a manual transmission ,,but I read that these have a wait time between shifting gears up and down

Any thoughts on this ?

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Old 10-10-2021, 12:48 PM   #5
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Re: I just bought this 83 K10 and it has a 4 speed

Most sm465s that I've owned I didnt even need 1st gear...always started in 2nd unless I had a load or on a hill...I've drove sticks all my life ..so it doesnt bother me with constant shifting..
My buddy has a old dodge with a t56 in it, he did the power tour one year...his legs were wore out from clutching thru the small towns with huge pt traffic clogging them up..
Great looking truck
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Old 10-10-2021, 05:19 PM   #6
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Re: I just bought this 83 K10 and it has a 4 speed

GetterDone,, thx maybe is comparable to the 56 Chevy pickup I had with a granny gear in it

Kipps ..yes thx I would have some tired legs now being older ,, I only leave the place when no work traffic or at noon and that helps no matter what I drive

57Naoco,, thx for the heads up...we do have a Kia Suv that does our grocery run and other things car

Mongo thx to you too,, I remember the 56 pickup and not using first gear hardly ever too
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Old 10-10-2021, 06:32 PM   #7
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Re: I just bought this 83 K10 and it has a 4 speed

I will back up the converting to hydraulic to make pedal operation easier. Those Z-bar pedal return springs are ridiculous.
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Old 10-10-2021, 07:30 PM   #8
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Re: I just bought this 83 K10 and it has a 4 speed

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I will back up the converting to hydraulic to make pedal operation easier. Those Z-bar pedal return springs are ridiculous.
Thanks for opinion Nick
What does it consist of to change to hydraulic.. Parts and Money to get it done if I decide to do that?
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Old 10-10-2021, 08:28 PM   #9
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Re: I just bought this 83 K10 and it has a 4 speed

Return spring is not a factor.
Style of pressure plate is what to watch for.
A nice raised finger diaphragm plate is best.
You might have a 3 finger borg and beck in there now. Definetly a left leg abuser.
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Old 10-14-2021, 01:52 PM   #10
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Re: I just bought this 83 K10 and it has a 4 speed

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Originally Posted by 57NAPCO View Post
I have a couple of trucks with the SM465 and they seem to be damn near bulletproof proof.
I have a customer that's a retired GM/Allison engineer that did the durability testing on this trans and I had ask him about using Mobil1 synthetic in it. He told me that once you break it in and change the original fluid - it about stops wearing at all !
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