Pirate 4x4 banner

1 - 12 of 12 Posts

·
Registered
Joined
·
331 Posts
Discussion Starter #1
If I were to get a 1/2 ton truck, can I swap 3/4 ton running gear and suspension onto it to effectively make it a 3/4 ton truck (for towing and hauling purposes) or is there a difference in the frame as well? What about 1 ton stuff?

I know that this will sound newbie-ish, and it kinda is, since I'm new to Chevy stuff aside from what I've swapped into my Jeep.

Thanks!
 

·
Registered
Joined
·
295 Posts
Everything is a bolt-on affair. Engine, tranny, transfer case, axles. Except the 1 ton rear axle, spring perches need to be moved inward. 3/4 ton the axles are the same. I've been told that a short bed is not the best for towing, so get a long bed. the frame on the 1/2 and 3/4 are the same (i could be wrong though) but the 1 ton is definately beefier. Hope this helps.
 

·
Registered
Joined
·
2,323 Posts
I did exactly that to my little terd...


I'm very happy with it and it was about as easy as it sounds. I just undid the springs from the 3/4 ton and bolted them on (some driveshaft work was required, but other than that....), way too easy. Mine tows and hauls with ease....

The 3/4 ton springs don't really flex well however, <IMG SRC="smilies/biggrin.gif" border="0">....mine's a sissy truck now....
 

·
Registered
Joined
·
982 Posts
i'm not 100% sure, but i do believe the frames of 3/4 ton and 1 tons were different from 1/2 tons, but u can brace it and put another cross-member for that, they have the same shape and all, just the 3/4 and 1 ton were heavier, stronger,
 

·
Registered
Joined
·
2,323 Posts
I thought the 3/4-1 tons were different, but decided they weren't after doing my truck. I could lean towards the 1 tons being different (they have longer springs and stuff). The 3/4 ton that I raped for my junk was the exact same frame as the one under my half ton. I think my truck was a 'heavy half' (anyone remember those?) so I'm not sure if that got the 3/4 ton frame or not, but in my case everything looked exactly the same and bolted on with absolutely no problems.
 

·
Registered
Joined
·
392 Posts
i am in the process of converting my axles to 3/4 ton and keeping the 1/2 ton springs, i have been told it will work and i dont see any reason why it wouldnt. i was wondering if anyone would mind giving me tips or anythignt hey had problems with when they did it so i wont make the same mistakes. thanks

urban wheeler
 

·
Registered
Joined
·
6,761 Posts
I wouldn't get overly worried about frame strength. If all else fails, you can just get some 1/8th or 3/16th flat stock and box the frame.
 

·
Registered
Joined
·
774 Posts
I just finished my 2 wheel drive sub was 1/2 ton the 1 ton stuff pads to wide shocks facing wrong way 3/4 stuff bolts right in.
 

·
Registered
Joined
·
19 Posts
1/2 ton and 3/4 ton frames are the same, regardless of whether or not they are "heavy" or "HD". The one ton frames are different. If you are starting with a half ton, look for a 3/4 ton 14 bolt. It will bolt right in. If you keep the 1/2 ton d-shaft you will have to get a hybrid U-joint that has two 1/2 ton caps and two 3/4 ton caps. As for the front, of course you need to find a 1 ton D60. It will bolt in without mods. If that isn't available, an 8 lug D44 or 10 bolt will also bolt in.
 

·
Registered
Joined
·
3,749 Posts
I am finishing that swap myself on my '85 Chevy. I used axles from a '77 GMC. Just about everything bolted right up including the driveshaft. Had to use the 3/4 ton u-bolts and spring plates. The only issues I ran into were the e-brake cables were completely different and the front calipers were metric on the '85 and SAE on the '77. I simply used the '85 calipers on the '77 axle, and I'm going to modify the brake cables. Couldn't have been much easier.
 

·
Registered
Joined
·
1 Posts
I want to do this to my 1/2 ton 2wd 77 I have a 3/4 ton 2wd chassis I want to swap front and rear suspension and hubs will the front work also will the springs swap
 
1 - 12 of 12 Posts
Top