Thanks for the info guys.
I have a full set of Pontiac Ralley II wheels with 4" BS. They should be similar to the 8" vette wheel, dimension wise. 235/60/15 are on one pair of them, currently on the rear. When I mounted them on the front, the the outter edge of the drivers side tire rubbed the back of the inner fender on left turns. Like maliburacinfreak, the fender lip hits on bumps. That was with Hotchkiss springs and KYB shocks.
With 15x7 (4.25 BS) and 205/65/15 tires the inner sidewalls rubbed the A-Arms at full turns. 3/8" universal spacers took care of that problem but I don't really care for that set-up. What BS do Chevy 15x7 have?
I experimented with a 205/65/15 tire on an 8" rim and everything clears but that was with TRW5660 S-10 truck springs that need some coils clipped. That won't give accurate results until I lower the front. The 205/65s are a bit undersized for the 8" rim and don't look great on them but, I felt it might give me a clue of how 215 or 225/60/15 will fit.
I'd like to use the 8" all around but its looking like I may be better off going with 15x7 on the front. 4" or 3.75" BS would probably be perfect. The 235s on the 8" rims look good on the back but 255 would be even better. That's why I'm intersted in trying the 235s on a 7" rim on the front.
Sorry so long winded.
Thanks,
Bill