GMT800 front brake question, 3500 SRW vs DRW

[DieselAmateur]

I'm wondering if anyone knows for certain if there are any differences in the front brakes (caliper, hub, rotor, pads) between a GMT800 2500/3500 SRW and a 3500 dually/ cab & chassis

I'm gathering parts for the GMT800 brake conversion for a GMT400 1 ton dump, and want the best braking possible. I've looked on a few duramax forums but have not found anything definitive, most conversations are about the rear and and switching between single and dually rears.

In looking up parts on RockAuto there are different part numbers for single rear wheel and dual rear wheel trucks as far as calipers, rotors, and wheel hubs go, but I don't want to use that as my primary source of information.

If anyone can say one way or another whether there are differences in the front brakes or whether it's worth the extra money (DRW front calipers can be $40 more apiece) please share insight and advice. Thanks!

 

[THEFERMANATOR]

Gmt800 8 lugs all use the same front brakes, in fact I don't believe they changed the 8 lug brakes until 2011.

 

[DieselAmateur]

Thanks @THEFERMANATOR , was hoping you'd share your knowledge. Any insight as to why there's different part numbers then? Would it be similar to the GMT400 where the DRW has thicker rotors and therefore needs a wider caliper?

 

[THEFERMANATOR]

For the rotors, drw gmt800 use a rotor with a narrower vent channel so there is a thicker rotor, but they're all 1.5" thick. I did find some brands that list just 1 rotor for both srw & drw. As to the calipers, I don't know. GM uses 1 knuckle for all 8 lugs and they're all dual 2" piston calipers. DRW trucks are actually SRW up front with bolt 9n 3.5" thick spacers, so I really don't know what is different between srw & drw calipers.