It is cam first. But the cam has to fit the application. And then the engine has to more or less be built around the cam.
You have already chosen all the components so now we have to fit the cam to the components.And the biggest reason is to not end up with a soggy bottom end that demands a 3500TC and 4.30 gears, and burns gas at an alarming rate; so much so that your 15,000 or 20,000 dollar or more machine, spends most of it's life parked.Phew, that was a mouthful.
See; at just 10.15 Scr it will be easy to overcam it now for street use in a 6000 pound truck, and run into detonation at WOT. But it will be almost as easy under-cam it and run into detonation at PT;part throttle.
I'm so glad you decided to put the 440 in the heavy machine.
>Have you stated your goals with this truck yet? Is it to have a first gear blast-off, and then sit back and mellow out? Is this the truck with 3.55s and 33" tires and the NP435? Have you figured out the gear ratios in that badboy tranny yet? Is it the 4.56-2.28-3.31-1.00 unit?