Thought I'd add to this group. I'll also add estimated cost...
'74 440 block + .030 stock 3.75 stroke (446")
'66 516 casting closed chamber heads
Stock cast crank
Stock LY rods
Basic machine work was done on lower end by someone else, we bought it used. But, it has TRW forged flat tops, Federal bearings, stock replacement rings, etc. A basic rebuild with heavy pistons. Heads have 2.08/1.74 stainless performance valves. I pocket ported and cleaned them up, and gasket matched them, ending up around 245cfm @.550 intake, 175cfm @ .550 exh. Spring seats and guides cut for springs. They were also milled to get a true final compression of 10.5:1. Intake is a factory '70 iron 6bbl that was also port matched and cleaned up as best as I could reach, no plenum mods. Carbs are factory '70 six pack 4sp vaccum carbs, jetted and tuned. Cam is Crane hydraulic H-302-2, 302°, .504 lift, 232° @ .050 intake, 312°, .528 lift, 242° @ .050 exh. It runs 1 7/8 Hooker headers and MSD 6AL with a Pro Billet dist.
Chassis dyno results: 378hp @ 5300 470tq @ 3500
That's 435hp, 540tq when converted to flywheel output. This dyno is a little generous (maybe 3-4%) too, but you get the idea.
It idles at 850rpm with 9" of vaccum on 93 octane unleaded. The car is a '71 Cuda, 4406bbl/4sp/Dana car, shaker, add on AC, P/W, etc. the car was weighed and tips the scales (with driver) at 4100lbs. With 3.54s and the stick, it runs 14.0s at 108mph. (yeah, traction with radials is an issue..lol)
Cost to duplicate longblock: (minus intake and carbs) $5200.
