I got this rebuilt 440 hp .030 engine ---
Fires up runs great. BUT under normal
driving conditions she overheats - temp goes thru the roof.

Tried changing the water pump and the thermostat had no effect.

The radiator is hot on the bottom and cold at the top.

TOOK the thermostat completely out and temp stays at 170 degrees -
but I know that is not the correct solution.

What is going on?


70 Road Runner 528 HEMI 4sp FY1 70 Road Runner 440+6 V-Code AG 4spd EV2 69 R/T 4 Spd Dana 3:54 AG Vert B5 69 R/T 4 Spd Dana 3:54 AG X9 V1X V8R-WORKING 69 R/T Auto/Console 8.75 SG Vert R/T B3 08 Challenger 1st Edition Hemi Orange 69 Super Bee 4 Spd 8.75 SG AG F8