1974 K10 manual options

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ih766

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Joined
Mar 14, 2025
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Location
Georgia
First Name
Owen
Truck Year
1974
Truck Model
K20
Engine Size
6.2
I have a 74 K20, Dana 60 in the front, 14 bolt in the back. I also have a 700ish hp supercharged LSA that I will absolutely be tossing in it. My only issue is I’m having a difficult time finding a viable manual to hang behind the LSA that isn’t a headache and a half to get in. So my question is what manuals are out there to put in this old girl? Autos are out of the question.
 

PrairieDrifter

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Location
North Dakota
First Name
Mason
Truck Year
84,79,77,76,70,48
Truck Model
Suburban k10, bonanza k10, k30, k20, c10, gmc 1/2ton
Engine Size
350, 350, 350, 350, 350, 350
4 speed would hold up I'm sure, but most likely not what you want.

Your only option really is a t56. You're not going to get what you want unless it's at least a full headache lol
 

Hunter79764

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Location
Grand Prairie, TX
First Name
Shawn
Truck Year
1987
Truck Model
Suburban V20
Engine Size
350
What about these? TR4050 5 speed, with 4WD cases available. Pretty close to SM465 ratios plus an overdrive, rated for 600 ft lbs.

 

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