That is pretty typical. But you can do better. Your radiator is likely clogged up. My 68 used to overheat on long hard drives or idling for long periods.
I took a pristine looking date coded radiator to a radiator shop. They pressure and flow checked it. Even though it look excellent it only flowed 60% of the rated value after a professional flush.
I replaced it with a new 3 row, stock shroud and stock clutch fan. The temp hasn’t moved past 1/2 way since. Thanks includes a 400 mile dive to the NPD car show averag8ng 75 most of the way.
No difference in radiator between a 289 & 302, however with A/C you need to use the 24” radiator. It mounts differently but is a simple bolt in operation. Once you get the right mo7nts.
68 289 convertible Candy-apple red & white
66 200 coupe Blue
94 GT convertible Red & black
98 GT convertible White & black
98 V6 convertible White & tan
Last edited by Flade; 05-07-2019 at 11:24 PM.