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Disc Brake Specifications: Notes

DISC BRAKE SPECIFICATIONS

Application In. (mm)
Disc Diameter
"A" Body: Front 10.236 (260)
"B" & "D" Bodies: Front 11.850 (301)
"C" Body: Front 10.945 (278)
"E" & "K" Bodies
Front 10.945 (278)
Rear 11.06 (281)
"F" Body
Front 10.512 (267)
Rear 11.654 (296)
"H" Body: Front 10.945 (278)
"J", "L" & "N" Bodies: Front 10.197 (259)
"W" Body
Front 10.512 (267)
Rear 10.098 (256.5)
"Y" Body
Front & Rear 12.00 (305)
Front (Heavy-Duty) 13.00 (330)
Lateral Runout
"A" Body: Front 0.002 (0.060)
"B" & "D" Bodies: Front 0.005 (0.130)
"C" & "H" Bodies: Front 0.002 (0.060)
"E" & "K" Bodies
Front 0.002 (0.060)
Rear 0.002 (0.060)
"F" Body
Front 0.005 (0.130)
Rear 0.003 (0.080)
"J", "L" & "N" Bodies: Front 0.003 (0.080)
"W" Body: Front & Rear 0.003 (0.080)
"Y" Body: Front & Rear 0.006 (0.150)
Parallelism (All Models) .0005 (.013)
Original Thickness
"A" Body: Front 1.028 (26.10)
"B" Body: Front 1.043 (26.50)
"C" & "H" Bodies: Front 1.270 (32.00)
"D" Body: Front 1.043 (26.50)
"E" & "K" Bodies
Front 1.260 (32.00)
Rear .433 (11.00)
"F" Body
Front 1.024 (26.00)
Rear .787 (20.00)
"J", "L" & "N" Body: Front (1) .796 (20.24)
"W" Body
Front 1.04 (26.42)
Rear .492 (12.50)
"Y" Body
Front & Rear .795 (20.20)
Front (Heavy-Duty) 1.11 (28.20)
Minimum Refinish Thickness
"A" Body: Front .972 (24.68)
"B" Body: Front .980 (24.89)
"C" & "H" Bodies: Front 1.224 (31.09)
"D" Body: Front .980 (24.88)
"E" & "K" Bodies
Front 1.224 (31.08)
Rear .389 (9.88)
"F" Body
Front .980 (24.89)
Rear .740 (18.78)
"J" & "N" Body: Front .751 (19.08)
"L" Body: Front .751 (19.08)
"W" Body
Front .987 (25.08)
Rear .444 (11.28)
"Y" Body
Front & Rear .744 (18.90)
Front (Heavy-Duty) 1.059 (26.90)
Discard Thickness
"A" Body: Front .957 (24.30)
"B" & "D" Bodies: Front .965 (24.51)
"C" & "H" Bodies: Front 1.209 (30.70)
"E" & "K" Bodies
Front 1.209 (30.70)
Rear .374 (9.50)
"F" Body
Front .965 (24.51)
Rear .724 (18.39)
"J", "L" & "N" Body: Front .736 (18.70)
"W" Body
Front .972 (24.69)
Rear .429 (10.90)
"Y" Body
Front & Rear .724 (18.39)
Front (Heavy-Duty) 1.039 (26.39)
(1) This table has been updated by the following TSB's: Buick 93-5-9; Chevrolet 93-152-5; Pontiac 93-5-11; Oldsmobile 93-U-37