I’m putting together a mild 400 for a 78 Magnum and would like to get feedback on my plan. The goal of this rebuild is to stay on a very limited budget and have an engine with decent performance and be reasonably affordable to drive. This will be a cruiser, go to the occasional local car show, drive to work on nice days, and once in a great while take it for a long road trip. It will never be on the track. The engine has been rebuilt before, but needed going thru again for various reasons. The pistons were sitting very low in the bore when I disassembled the engine, on average they measured 0.152” below the deck. I don’t have the budget to take the block to a shop to get decked, so I’m just going to have to live with that. My 452 heads are shot, all the valve guides are worn and the exhaust seats are eroded. I’ve called several shops in the area and they’re all quoting me close to $1000 just to get new guides and seats. If I have to spend that much money, then I’d rather get Edelbrock or Stealth heads for about the same price with 75cc chambers, build my compression up a little and save some weight. With the right thin head gaskets it gets me into the 8.1 range versus 7 for the 452 heads. I bought my cam years ago when I was making decent wages. It’s the smallest hydraulic roller retrofit cam the Crane makes, .429”/.452” at 204/214. This cam builds pretty decent cylinder pressure, so I’m hoping the low static compression ratio won’t be as much of a problem as it normally would be. Crane says the static compression should be in the range of 8-9.5, so I’d just be getting there with the aluminum heads. The rest of the build is pretty much stock. Stock replacement pistons and rings, stock rods, etc. I will be using an Edelbrock Performer intake and a Street Demon 625 with the composite body too. So I’m just wondering how well you all think the combination of low compression pistons, cam, aluminum heads and intake, and carb will work together for my goals?