318 Engine Rebuild
So after reading numerous threads on this site and other Mopar sites, I am considering a 318 build - somewhere in the 350hp-400hp range. I have 2 D150's...1 is an 88 Prospector, the other is a 92 plain jane work truck. Both have 318's, but the 92 has the Magnum version. From reading the articles, it would appear a .040 overbore on the 318 will give me a 324; use flattop pistons and zero the block...so far so good...I'm assuming I can use the stock crank, correct? Just polish it (or grind it, depending on its condition) and use new main bearings. I believe the stock connecting rods should be fine, just use new hardware when bolting back together. Now, here's where I am stuck. I have 2 articles claiming to do budget 400hp 318's...one uses 360 heads with some valve work, the other uss 318 Magnum heads. What is the best way? I have a Magnum engine...I could rebuild the 88 engine and steal the magnum heads, or I could rebuild the magnum and convert it to carb...I see Edelbrock now offers the Magnum intake. However, what is my best route? Should I find some 360 heads for the 88 318, use the magnum heads on the 88 318, or just go with the magnum and rebuild it? My issue with the 92 (and maybe the 88) is the fuel pump...I really would prefer to do a mechanical pump, not an electric, but the magnum requires an early model snout if I do that...will the 88 readily accept a mechanical pump, or will I need to swap that as well? I want to put this engine in the 92, as this is the truck I currently drive (it is not my only vehicle, so having it out of commission for a month or 2 is OK)...any thoughts or advice?