Re: disc brake conversions

Posted by Craig Hendrickson On 2013/5/1 18:02:12

I had an email response from Scarebird.com in WA. He makes adapter plates for disc brake conversions. I bought a set for my 1963 Tempest a few years ago. He is interested in duplicating the "magic plates" used on my 55 Pat and 56 Clipper. However, there is a problem. Both Hollander and Packard parts books lists 4 different "steering knuckles" (GP 15.400). Does anyone know definitively what the difference is?

For the PS cars (almost nobody has MS):

PN - fit
446905 - (1955 Junior) 5540 & 5560 w/PS
443908 - (1955 & 1956 Senior) w/PS
6480301 - (1956 Junior) w/PS

I know for a fact that the adapter plate I have fits both the 1955 Senior (443908) and the 1956 Junior (6480301).

Any insight and specificity as to the difference would be appreciated. The kit like I have would fit 5x4-1/2 wheels, which Seniors could use the Junior wheels if that's what you wanted to do. Only the "magic plate" is outsourced, all other parts are OTC at virtually any auto parts store. Some machine work required on the spindle inner bearing fit and steering arm (see my website for details).

Craig