Re: 302 Overheating!
I think one of the guys said this- You sure you don't have a water pump turning the wrong way, in your case I assume a reverse rotation pump would be the wrong one, I ordered a Stewart pump & got the reverse rotation one by mistake, caught it before installing though.
I had all your issues, with a 3 row rad. Stewart pump (normal rotation) & a Taurus electric fan/shroud the thing runs at 160 in heavy traffic, if anything it runs a bit cold!
Taurus or the Lincoln electric fans kick out huge CFM;s, you can avoid the spike on your electrical system on start up by using a Flexalite variable speed controller, it brings the fan on slowly & then ramps up to the speed required, mine hardly ever goes to full rpms.
motor- 347 stroker built by Stefko racing engines
As posts above, start at the rad, make sure its cleaned out, it'd be running a 3 row at least.
My local rad. shop took my 2 row stock rad, used the top tank & a larger bottom tank from GDI industries & built me a 3 row all for under 300 bucks.