Two things for torque- get as much compression ratio as you can run at your octane level, and get a modern cam grind.

Jones cams has a grind I like for truck motors but check with him after filling out his cam card questionaire with all of your info and see what he recommends. specs below.

I would look into getting a step head design piston from KB to get quench and 9 to 1 compression with your open chamber heads. Or if your budget allows, 440 source heads and six pack type flat tops zero decked.

Oem intake or regular performer so the .thermoquad doesn't need an adapter. You wont be spinning a 440 truck motor above 5,000 rpm anyway. Headers and good exhaust.





H440D64307
256°

202°

.307″

.461″