This brings up a question that I have about the 73+ spindles. On my '68 FS FB, I installed 73+ UCA and spindles. Naturally they are wider. But I had sway bar and tire clearance issues with the calipers mounted forward as is stock, so I swapped side to side so the calipers were towards the rear. Worked well but not happy with brake line routing. During restoration, I purchased the Helwig bent sway bar which allowed clearance for the 11.75" rotors and calipers. OK, Happy with that. But the tires moved forward by about 1/4" or a little more. I was running 235-60x15's BFG's before with good clearance. Tight, but no touching. After swapping the spindles back to stock, the tires interfered with the front lower edge of the finder. To get clearance I had to go down 2 sized to 215-60x15's. Not desirable! The wheels are Weld 96-57208 ProStar's with 4.5" Rear Spacing. I am not sure if there are other back spacing options that will give more clearance. Does anyone know if the spindle centerline is offset so that swapping spindles side to side changes effective wheelbase by maybe 1/4" or more?
The 235-60x15 Front photo is of the tires/wheels I ran for 10 years with no issues with the caliper mounted to the rear. With the caliper mounted to the front (see photo), even the 225-60x15's touched the fender (the tire is mounted on a checking rim that is adjustable). So I went with 215-60x15's to clear the fender (but no photo).
Thoughts?
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