70 duster: updating, and a no-dough pro-touring makeover

dusterbd13 said

...

also started redoing the front suspension. plans are to go to 3/8 taller FMJ spindles for better negative camber gain, and offset UCA bushings for better alignment specs. I'm thinking of going with the recommended specs from hotchkis, which are -1.5 camber, +7 caster, and 1/16 toe in.

to get there, other than the offset bushings, i had heard reference in some older forum posts about using spacers between the lower ball joint and spindle. plans are to do about .25 inch spacers for my alignment numbers.

...

Click to expand...

I wrote about lower spindle bolt washers "spacers" on my old 68 Cuda Autocrosser website: http://hometown.aol.com/pwall5/cars/2cudapag.html
I read about doing that in an ancient circle track book called, Suspension Theory and Design by John Pappas. Pretty rare book actually.

I think Andy at ARengineering makes hardened spacers that fit perfect for this.

I don't know if you will be able to get 1.5 neg camber AND 7 deg postive caster both at the same time with stock UCA and offset bushings. I got to 1.5 neg and 5 deg positive caster. It's sort of a trade off between the two. The camber is more important than the caster. Take the 1.5 neg caster first, then whatever max caster is left.