FYI. Looked on Hollanders: JB3 is power disc brakes with 11.86X1.04" rotors and 11X2" drum brake shoes(used 76-96). JB5 is power disc brakes with 11.86X1.29" rotors and 11.15X2.75" drum brake shoes(used 76-98).
__________________
FOUNDING MEMBER OF THE DRUM BRAKE CLUB
Second Owner 70 C-10
Second Owner 93 GMC C1500
Third Owner 99 C2500 Crew Cab Short Bed
|