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'70 e-body spindle strong enough to run 12" rotor? #1155541 01/12/12 09:51 PM 01/12/12 09:51 PM
Joined: Nov 2004 Posts: 354 K kielbasa OP enthusiast
kielbasa OP enthusiast K Joined: Nov 2004 Posts: 354	Hi guys, want to run 12" rotors on my AAR (came with discs)...I know bearing adapters exist to run the larger wheel bearings on the 70~72 spindles. Is there anything to worry about with the smaller spindle diameter, or am I worrying about nothing? p.s. will be used for street driving, no autocrossing. Thanks!

Re: '70 e-body spindle strong enough to run 12" rotor? [Re: kielbasa] #1155542 01/12/12 10:42 PM 01/12/12 10:42 PM
Joined: Jan 2003 Posts: 8,016 Polson, MT DoctorDiff master
DoctorDiff master Joined: Jan 2003 Posts: 8,016 Polson, MT	I doubt you will have a problem. Ford and GM used the same "small" spindle diameter for years regardless of engine size/vehicle weight. Contact info

Re: '70 e-body spindle strong enough to run 12" rotor? [Re: DoctorDiff] #1155543 01/12/12 11:33 PM 01/12/12 11:33 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Quote: I doubt you will have a problem. Ford and GM used the same "small" spindle diameter for years regardless of engine size/vehicle weight. Chrysler went to the larger spindle not for strength but to fit the larger bearing... The smaller bearings were prone to failure... Cass's bearing spacer allows the big bearing to be used with the small spindle, similar spacers are used in industrial applications without issues every day... "The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."

Re: '70 e-body spindle strong enough to run 12" rotor? [Re: 1_WILD_RT] #1155544 01/13/12 12:09 AM 01/13/12 12:09 AM
Joined: Jan 2003 Posts: 27,467 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,467 So Cal	Some of AndyF Brembo caliper and big disk conversions use an even lighter 73-76 A-body drum spindle. Tim Werners 68 Valiant has run that setup on the track up to 140+ mph cutting some very impressive lap times!

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