Reply to "Upgrading brakes"

Boyd,

Sent you this via the e-mail list, but I'll post here for everyone's benefit.

I have moved front and rear rotors outboard on my '74. On the rear I used Sierra hats & Wilwood rotors, up front was Wilwood hats and Coleman rotors. Calipers are all from Sierra.

The particular rotor isn't as important as the caliper mounting brackets depending on what style/width rotors you want. At the rear I went for vented 1.25" rotors in 12.19" dia. 8x7.62" bolt pattern (Wilwood part #'s 160-2900 & 2901). You can get the same rotor in 0.81" thickness (part #'s 160-8474 & 8475) if that suits your current calipers better, but you'll still be making mounting brackets to move the calipers out as that is still a larger dia. rotor than stock.

The Sierra hats are a Larry Stock exclusive as he purchases blanks and drills them for the 4.5 x 5 bolt pattern. For the fronts I used an off the shelf Wilwood hat part # 170-0635 to move the rotors outboard.

Sierra will refer you to Larry if you enquire about their hats/calipers for a Pantera, but I found his prices not too overinflated to Sierra's direct pricing. You will likely need to change your wheel studs for ones with a slightly shorter shoulder length in the process (or chamfer the back of your wheel mounting holes) as the hats are thinner than the oem rotors.

Here's Sierra's website http://sierraracing.com/

It will push your wheels further out by the thickness of the hat, which is about 0.3".

Julian