interesting, i was looking at 71+ 2WD C10 11" rotors (5x5) specs a while back comparing bearing type to the 70 Bonneville factory discs I put on our 66 Chief and during that I found the caliper interchange with 4WD 71+ K5 K10 application and the 69-70 single piston Pontiac B units
Looking at those bearing sets for 70 Bonne disc inner as A5 and outer as A2 (not A3) and the 71+ C10 is A5 inner but A3 outer and the 71+C10 rotor fits 71-76 B body Pontiac
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63 Catalina coupe 467 cid budget drag car low 11's 1/4 , 7.0's 1/8th pump gas n/a
66 Star Chief Executive 59k mile 389
67 IH Scout project 2WD "Indian Scout"
69 Le Mans 2 dr HT 350 91k mile 15 sec 1/4
69 Firebird 400 Burgandy/Black
70 Olds Rallye 350 F85 4 speed 3.91's
70 Olds Cutlass Cruiser Red Wagon 350 108k miles 15 sec 1/4 12 sec w 455
74 Cheyenne Super C10 LWB Gen 6 454 w ZZ502 cam 3.07gear 13.1 1/4, 8.3 1/8
2020 RAM 1500 SLT 4x4 5.7 A8 Hemi
2008 Saab 9-3 2.0T convertible
Last edited by PONTIAC LARRY; 01-01-2025 at 12:29 PM.
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