Drum Brake Size Question

[DBear]

I have a 71 K10 Suburban 4x4, with front disc and rear drums. I am assuming that my rear drums are 2"x11". The parts store has option for a 2 3/4"x 11 5/32" drums. Are the larger size better braking performance? If so, can my drums be converted to the larger sized drums...and what all would that intel? Thank you in advance

[SCOTI]

Originally Posted by DBear

I have a 71 K10 Suburban 4x4, with front disc and rear drums. I am assuming that my rear drums are 2"x11". The parts store has option for a 2 3/4"x 11 5/32" drums. Are the larger size better braking performance? If so, can my drums be converted to the larger sized drums...and what all would that intel? Thank you in advance

I'm not sure on this earlier generation, but the HD drum option for Squarebody trucks utilizes an offset backing plate specific to the wider 2 3/4 brake shoe set-up vs the standard backing plate.

The set-up has the offset backing plate, beefier drum, & wider brake shoes. It's also worth noting that 15" wheels are limited on backspacing when using this combo because the beefier drum can/will cause interference @ the barrel of the wheel.