need some help with wheels

[sixty8c10]

I am about to order my wheels, and i have a couple of questions.

First I should give you the rundown of whats on it/ going on it.

68' C10, six-lug, LWB, 2 and a half inch drop spindles with disc brakes and and bags with the lower cup cut down to one inch. My plan is to order 20x8 or 20x8.5 wheels for the front with 5" back space, and mount either a 255/35x20 or a 255/40x20, will these fit in the front or do I need more backspace?

Out back will be a c-notch 2" blocks and bags. I am planning on a 20x10 with 4.7" backspace and a 265/40x20 tire. Will these fit?

Also is anyone on here a Bonspeed dealer?

Thanks for the help, Toby

[droppedgmc]

20x10 in the rear with 4.7" of bs is not enough to tuck. you'll need at least 5.5"-6" of bs i'd say. in the front, 20x8.5" go with about 4.25"-4.50".

[sixty8c10]

ttt

[Rokcrln]

Check out this thread and post 372 and 374 give his tire info. It is a simular set up so this may help guide you. http://67-72chevytrucks.com/vboard/s...184474&page=15

Kevin
LFD Inc.

[sixty8c10]

So the way I view it, I need 5.25 BS on a 20x8 wheel for the front, or 5.75 BS for a 20x8.5.

4.7 BS on a 20x10 is cool for the rear end.

I just don't want to spend a bunch of money I cannot get back.

[sixty8c10]

ttt