Hey all,
I just fired my '68 Camaro for the first time tonight with the new crate 350. Build went smooth, timing went great (I'm usually 180* off), and it fired right up after I primed the fuel bowls. The idle was great, so I put it at 1500 RPM and let it run. About 10 minutes into my checks for leaks, charging, etc, the radiator started to boil over. I immediately shut it down, but the thing creaked and groaned and spewed for about five minutes afterward. I have a 180* stat in, and the upper hose was hot to the touch during my checks so I thought the stat had opened.

I need those who have more experience than me to let me know what to check first for damage, etc.

Thanks!