I just copied this from the Disc-o-Tech article Sean.If your car now has 9-inch drums, the first step up would be the 10" drums used on all '65-up 8-cyl cars. We frankly wouldn't drive an A-body over 40 mph with the 9-inch drums, for reasons having nothing to do with the brakes. The small ball-joint-to- knuckle bolts, which are loaded in shear, are known to snap, usually at the most inopportune time.
The 10-inch, '65-72 drums are a simple R&R bolt-on. You'll need a set of the 10" drum ball joints and the aforementioned larger bolts, of course.
Dan----- Original Message ----- From: "Sean B" <polecat2@xxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx> Sent: Monday, July 28, 2008 5:18 PM Subject: bigger drum brakes
Sorry for the off-topic question, but my friend is building a 1964 Dodge Dart station wagon for drag racing. He wants to upgrade the 9" front drums to 10" front drums, either bolt pattern is fine. What must he do? I can't talk him into disc brakes. Thanks, Sean
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