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I have a 1968 Buick Gran Sport with front power drum brakes and im wanting to convert them to power discs, where can i find spindals to do such a conversion, would i be better off looking in a junkyard for a buick with front disc spindals or is their an after market solution? please let me know thanks
 

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Gm disks

Gm used the same spindles on a lot of those cars..

you should be able to get some disks from Willwood brake..these are the aftermarket solution..if thais too spendy then look for some GM later metric spindles..

Making friends with the local wrecking yard guy can pay dividends as these guys have interchange books that can help as well..

Look into what the Imca guys do as these cars run disk brakes on GM metric chassis...And your Gran sport may be the same chassis..
 

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As far as disc-brake spindles, '68-'72 Chevelle, Tempest, Cutlass, & Skylark will work, as will '67-'69 Camaro/Firebird & '68-'74 Nova, Omega, Ventura, & Apollo. Some of the Camaro & Nova restoration places sell disc brake spindles, or you can have yours modified to disc-brake specs.

Two-piece rotors (rare) from early Camaros may not work with single-piston calipers, but one-piece rotors from the above cars are all the same.

'67-'68 GM cars used the four-piston calipers, which are prone to leak, & are hard to find parts for. '69 & later use the single-piston calipers. Caliper brackets must match the design, but either design will fit on all the above spindles. Same for the dust shields (backing plates).

You'll need to use a disc-brake master cylinder & proportioning valve.

You may also need new wheels. If you have stock 14" drum-brake wheels, they will probably hit the calipers. Factory 14" wheels designed for disc-brake cars will work, as will most 15" & larger wheels.



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