What are the general differences between the two trucks mainly in the front axles and a arms. I want to see if I can put a 3/4 ton heavy duty lift on my light duty 3/4 ton truck. any hel;p is appreciated.
thanks,
Deric:
Soryy this is for a 1994 chevy

Which year are you talking about? The 88 and newer? Ifso the 1/2 ton and 6 lug 3/4 ton have the same front differential, but the 3/4 should have the corporate 9.5 semifloating. Asfar as the frames I don't know of any differences but I haven't fooled with many. Somebody else will know more so bump bump:D

First off 1994 chevy trucks dont have axles in the front,Its all IFS, Actually from 87' and up chevy trucks dont have front axles, the difference between the light 3/4 ton and Heavy 3/4 ton REAR axles is light 3/4ton have smaller carrier(with 4:11 gears) smaller brake shoes, and the drums are six lug. Heavy 3/4ton axles have a biger carrier still with 4:11 gears but have bigger brake shoes, and bigger drums and come in 8 lug.

I dont know what year yall are talkin about but my 1978 chevy 3/4 ton 8400gvw (camper special) came with a dana 44 up front and a 14 bolt in the rear. Both with 4.56's from the factory....

Were talking about 88 and newer trucks having IFS. And yes they do have axles, CV axles, you know what runs from the diff to the hub:rolleyes: I can see how I could have confused you. I just figured everyone knew that the HD 3/4 had 14 bolt under them, full floating, 8 lug and a different front differential then the LD 3/4 and 1/2. I think the HD has a 9.25" ring gear and the LD has 8.25 or 8.5, not real sure. But asfar as the front suspension, all I know is the HD will proably have heavier torsion bars. I don't know if the cradle for the lift is the same or not. I'd call whoever is the manufacter of your lift, and try to talk to someone that is helpful.



:usa:

The Frame should be the same but I know the regular 3/4 ton had the semi-floating as hillbilly said, but it was a six lug axle. I put one in the back of my blazer to match the 6 lug J10 Dana 44 I am going to put up front for my solid axle swap. on newer models, the standard 3/4 has an 8 lug semi float and the HD has the full float 14bolt

Unless you are gonna haul more, then I would say stick with the 3/4 light lift, or do a 1/2ton lift...You may not be able to haul as much or tow as much w/o the rear squatting down sooner but it will ride better and flex better than a higher load lift kit because there should be less leaves and possibly lower spring rate...or thats my theory on it...just my .02

The light duty 3/4's have the 14 SF and the 3/4 HD have the 14FF...
Other than that, the front diff may be a lighter duty unit in the light duty app...

88-96 3/4 ton 6 lug front diff. 8.2" rear 9.5" 14 bolt SF
88-96 3/4 ton 8 lug front diff. 8.5" rear 10.5" 14 bolt FF
92-96 1 ton 4WD front diff. 9.2" rear 10.5" 14 botl FF

Originally posted by GMC
88-96 3/4 ton 6 lug front diff. 8.2" rear 9.5" 14 bolt SF
88-96 3/4 ton 8 lug front diff. 8.5" rear 10.5" 14 bolt FF
92-96 1 ton 4WD front diff. 9.2" rear 10.5" 14 botl FF

3/4 ton 6 lug? Or are you talking about a heavy half ton?

hey guys was there ever a dana 60 in the front of a 3/4 ton from '77 to '87?? every seen one?? i read in four wheeler yes.. from what i can figure no.. ?????:confused:

Originally posted by slotoy
hey guys was there ever a dana 60 in the front of a 3/4 ton from '77 to '87?? every seen one?? i read in four wheeler yes.. from what i can figure no.. ?????:confused:

I think the 60 was only a 1 ton item.. Never seen or heard of one in a 3/4 ton..

Originally posted by Krylon..


I think the 60 was only a 1 ton item.. Never seen or heard of one in a 3/4 ton..

so far i have to agree

I'd have to concur.......only place I've seen a D60 is the front of a one ton.

'88 and up 8-lug lifts are all the same, all the 8-lug 3/4 tons had teh 9.25" front axle, some 2500 trucks were 6 lug, but they had the smaller (8.25?) front axle, the rears could be semi-foat 14 bolts in either 6-lug or 8 lug applications, with the 1 tons being a full-floater 14 bolt. I may be a Jeep guy, but I've had over a dozen Chevy's and still got one.

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