440 build for a tow rig/"muscle" truck?

mbaird said
If this is really for towing you have to consider heat build up

mgoblue9798 said
I amj building a 440 to go in my RV so similar engine requirements. Six pack pistons plus a small cut on the deck of the block will get you to zero deck height.

Call Mike Jones he has a flat tappet cam he designed specifically for a 440 grunt motor. Get the cam,lifters, and valve springs from him (he sells usa made parts).
H440D64307
Hydraulic Flat Tappet | Jones Cams

Not sure what CC the chambers are in the 440 source heads but you will need to pay close attention to compression ratio with a zero deck 440. May have to open up the chambers or have a relief cut in the six pack pistons to get down to 9 to 1.

I already got the pistons and the block was bored, honed and light cleanup cut on the decks. I'm using Icon forged pistons which will be below deck at TDC, been a minute since I ran through the calculations but my compression will be right around 9:1 with the Stealth heads. I considered the Sealed Power pistons that are copies of the old TRW forgings but they're just too damn heavy to me. Between the moderate compression, having aluminum heads instead of iron, high-flow water pump and thermostat and a nice aluminum radiator, heat buildup should be kept under control.

If I go with a custom-grind roller cam I will likely reach back out to Jim at Racer Brown. He ground the hyd roller cam currently in the 360 in my Duster a few years back and it's awesome, I couldn't be happier with how it performs.