OK, I transplanted a new rebuilt 402 BB in my 307 car, I have 2 radiators available, a 2 row aluminum (a 1" row and a 5/8" row) and a 3 core Modine both for a small block core support. I have tried both and the car still overheats. I have a 180 thermostat which I tested on the kitchen stove in a pot of water to make sure it opened at 180. I fired up the car without the thermostat to make sure the new aluminum water pump was working properly, it is. I got 2 new radiator caps, a 13 psi and a 16 psi, pressure tested both to make sure they held pressure, they did. Going down the road over 45mph the temp stays at 195 on my new autometer gauge, below that speed the temp starts creeping up. I am using a modified stock radiator shroud (notched for the alt pully and ps pump pully nut) and a 17" flex-a-lite mechanical fan. Just sitting in the shop the car's temp won't even hesitate at 180 when the thermostat opens it just keeps on climbing. The engine timing is set at 5 degrees BTDC, book says 4 degrees BTDC (for a stock camshaft) so that should not be causing any problems. UPDATE: I reset my timing using a vacuum gauge to power time the engine (RPM at 2000, vacuum advance disconnected, advance distributor to reach highest vacuum reading then retard timing 1 inch of vacuum then lock distributor down, then use timing light to check timing before reinstalling vacuum advance line. Timing was at 10 degrees BTDC which is consistance with an aftermarket camshaft which my engine has) Engine is still running hot. HELP, what is wrong????