Join Date: Sep 2000
Location: Orchard Park, NY USA
What you're referring to is "Back Spacing" and it's the dimension from the inner wheel lip to the back of the mounting pad. Stock for a Chevy wheel is 4" of b.s. Those dimensions you listed will pull in the wheels more, so you can fit a bigger wheel/tire combo. I've heard that the max. b.s on a stock suspension is 5" any more you'll be rubbing on the shocks, etc. I would go 4 3/4 max. and you should be safe.
As for the wheel width on a '69 I would think about 8" is max. up front on a stock app. And unless you plan to do some wheel lip trimming out back, no more than a 8.5"
Some '69 owners can probably give you better info on widths.
[This message has been edited by John Doyle (edited 02-21-2001).]