blackandgold51
1/2 ton status
?
I forgot about mpgWhy ?..the rolling resistance from 2 more tires,extra weight of a 1 ton axle,lower gearing,wind drag from the dually fenders,all that = less mpg..
This will not help your fuel efficiency at all.

...Agreed,the 1/2 ton frame and springs will be a limiting factor--though I see many 1/2 ton Suburbans,even 2wd ones, used to tow huge trailers and car trailers with the stock single rear wheel axle,I think the only thing you'd gain by putting a dually axle under one is better anti-sway control and help the tires last longer by sharing the load..and maybe "better looks",if you think it looks cool...
Personally I dont like the big fenders sticking out--I see quite a few dually's and Suburbans with the rear fenders all cracked because the driver "forgot" they stuck so far out..I had a G-30 van based Rockwood camper with a fiberglass camper body that jutted out 6" past the mirrors,and more than once I almost wrecked it when I tried driving down a narrow alley,and figured "well--the mirrors cleared,so I think it'll fit ok...then SCRRRAAAPPE !.....
Agreed,the 1/2 ton frame and springs will be a limiting factor--though I see many 1/2 ton Suburbans,even 2wd ones, used to tow huge trailers and car trailers with the stock single rear wheel axle,I think the only thing you'd gain by putting a dually axle under one is better anti-sway control and help the tires last longer by sharing the load..and maybe "better looks",if you think it looks cool...
Personally I dont like the big fenders sticking out--I see quite a few dually's and Suburbans with the rear fenders all cracked because the driver "forgot" they stuck so far out..I had a G-30 van based Rockwood camper with a fiberglass camper body that jutted out 6" past the mirrors,and more than once I almost wrecked it when I tried driving down a narrow alley,and figured "well--the mirrors cleared,so I think it'll fit ok...then SCRRRAAAPPE !.....