Quote:
That truck is an '84 which only came with small blocks.
Was the radiator upgraded when the engine was installed?
Even a stock 440 will need more cooling capacity than what was factory
installed in '84. A replacement radiator for a '78 440 truck should
cure your problem, get a max cool while you're at it.
Hmmm..... Yes, I am the culprit that ditched the 360 and transplanted the 440 - but I don't think I thought about the radiator size to cubic inch ratio; I did the swap in 2000 and then put the truck in storage while I went overseas so I don't remember much about it. I will have to go out and measure the darn thing! I'll update ya'll shortly. 
Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
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68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
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