I just wanted to post my 505 Dyno results as a point of reference for anybody planning a build. I only ran it on the dyno because I have been fighting a rear main seal leak and wanted to verify that it was fixed (it finally is - after many attempts!).
440 block (1973) - 0.030 over. 440 source rotating assembly. 10.6:1 calculated compression. Howard's solid flat tappet cam 720152-08.
CHRYSLER Howards Cams 720152-08 Howards Cams Mechanical Flat Tappet Camshafts | Summit Racing
EDM lifters. Smith Brothers custom pushrods (ended up at 9.8 inch effective length). Mancini racing aluminum rockers.
Trick flow 240 heads. Trick flow intake manifold.
High volume oil pump.
Dyno pulls with shop's carburetor (I didn't even ask what CFM as I run Sniper EFI in the car). Large dyno headers. Cheap HEI distributor with whatever advance springs it came with (I run Hyperspark in the car). 36 degrees total timing. Water temperature was about 150 degrees. Nice cold air.
I'm very happy with the results. I actually run this in a 73 D100 long bed. Best ET is 11.52 at about 117mph. I run 91 octane pump gas. Track elevation here is 2700 feet. I haven't weighed the truck but guessing around 4500 pounds?
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