I replaced my orginal with a aluminum radiator from Classic Industries. Car was running 220 to 230 in the Phoenix summers even without the air on. Even with lower thermo. Tested electric pusher fan along with normal fan. Still was over heating. Put the Aluminum raditor in with a 192 degree thermo and problem solved.
I have two 68 Firebirds: 68 convertible ls2, auto 4L60E, red interior, white/black power top. I have owned since 1971. 2) 68 coupe, aqua/white tope. aqua interior, 350 4 speed. I am restoring this car and it will be for sale. Before paint or after.
