Whitch 3/4 ton axels

I've been trying to figure out which 3/4 axels I should be looking for, for my 1/2 ton truck, but i have mostly came up empty on any info. I want them to bolt in without any changes. I just don't know exactly what I should look for.

I'm gonna be putting on STA superlug 36in 9x16s on it so I'd like to know the best axels I can use without major modifications.

TheClassicRed said:

I've been trying to figure out which 3/4 axels I should be looking for, for my 1/2 ton truck, but i have mostly came up empty on any info. I want them to bolt in without any changes. I just don't know exactly what I should look for.

I'm gonna be putting on STA superlug 36in 9x16s on it so I'd like to know the best axels I can use without major modifications.

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You probably should spell axel as axle, you'll know why soon. You definitely should put up year and model of truck, I've made assumptions as to what O.P. was working on 1 too many times

Axles aren't exactly a drop in replacement across styles. You have the full/semi floating thing just as one instance.

To upgrade ½ to ¾ ton axles usually requires you change assemblies as well as some possible modifications concerning spring perch, brake (drum vs disc) and a few other minute yet important details I can't think of in a pre-coffee state. Yeah, I was up WAY too late last night.....

Ricko1966 said:

You probably should spell axel as axle, you'll know why soon. You definitely should put up year and model of truck, I've made assumptions as to what O.P. was working on 1 too many times

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Ive been working 10-12 hour shifts all week so exuse the bad spelling lol.

Well anyways it is a 1979 chevy k10 standard cab longbed. I want to put 3/4 tons under it of the same gen so they just bolt on since the k10 and k20 frames are identical.

I'm gonna put 3/4 ton lift kit on it full leaf lift from RC

I just don't know what the two axles I should look for exactly for this build

Radiohead said:

Axles aren't exactly a drop in replacement across styles. You have the full/semi floating thing just as one instance.

To upgrade ½ to ¾ ton axles usually requires you change assemblies as well as some possible modifications concerning spring perch, brake (drum vs disc) and a few other minute yet important details I can't think of in a pre-coffee state. Yeah, I was up WAY too late last night.....

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Well I've been told with the squares they're just bolt on basically since they're the exact same frame. It's the 1 ton that causes the need for retrofitting, that's why I'm chosing to go with 3/4 instead.

I just want the best axle I can get for my truck since I'm using 36in 9x16s bias plys so that I don't break anything and can tow semi well

Simple answer - axles from a 3/4 ton truck.
Moderate answer - 14 bolt full float with spring perch width that corresponds to your frame width. The front Dana 44 will need converted to 8 lug.
Complicated answer - There’s a lot more to it than just bolting in front/rear axle swap. Especially with the front end.

Your current front axle is the same as a 3/4 ton. Except for the spindle out. The 3/4 ton is a large bearing assembly with an 8 lug hub.

I am no expert at all on K axle differences,something that would concern me and I would research is will the yokes be in the same Location or will you need shorter/longer driveshafts.

Justin, we're not trying to dissuade you, just saying you need to do more research than what is initially apparent. Yes, lots of things will/can interchange on squares.

I wanted something I could tow/haul more than the average, plus want something stout enough to beat BIL and his small block c10 firecracker, so I went with a c20 big block as a starting point. The factory rear swaybar is a schwing.

As to your application, I would think staying in your year range would afford more better fitting assemblies. Maybe a donor ¾ ton with good running gear might be easiest, then you have all the heavier parts and their mounting gizmos plus all the extra fasteners and such. If you start a build thread, I bet you will get lots of good feedback. And yes, a well staged photo is worth a thousand posts.

The simplest swap would be 3/4 ton axles (complete) from a '79 through '83 I believe.

Any 3/4 ton axles (well, except a rear axle from a crew cab C20) will literally bolt in as an assembly. It's just the minor differences in things like brake hose fittings on the calipers and the way the parking brake cables attach to the rear axle. The rear drive shaft may be a little short, but the amount it is short will be determined mostly by your lift kit.

If you are going to drive the truck often, I'd advise against Rough County springs.