Just another build thread - Sort my combo!
I don't believe the 904 will mate up to the 440.
Correct... I recommend VOETOM's book on torqueflites, this will tell you exactly what you need to do.
https://www.amazon.com/dp/1613253354/?tag=joeychgo-20 Also, buy a torque converter from either Ultimate Converters or PTC, none of the generic off the shelf stuff offered by everyone else. This is oftentimes the make or break between an "Untouchable" or an "it's okay, but it feels like somethings missing" combination. Check out the Big block forum here, too. TTI does make some 440 specific A body headers, and at that power level, 1-3/4 tubes would work well, as would the Schumaker Tri-Ys. 10.6:1 with aluminum heads would be fine on 91-93 octane. The E Streets are rated at 1500-5500, and would work with this camshaft.
Voodoo Hydraulic Flat Tappet - Chrysler 361-440 268/276 - Lunati Power
Go with the performer RPM or a Holley street dominator intake and an Edelbrock 800 CFM AVS. If the budget allows it, a set of TFS 240 power port heads with this grind
Voodoo Hydraulic Flat Tappet & Lifter Kit - Chrysler 361-440 Three Bolt 276/284 - Lunati Power
and MP single plane 440 intake would be very strong from 2500 to 6500. A competition ThermoQuad would work very well at this level. The good thing about the converter manufacturers I made mention of is you tell them your exact combination and goals and they build the converter based on your build, it's not just a generic guess based on diameter and stall speed.
