When I got the engine redone the engine builder put a Wolverine Cam in which was about 500 lift.It was a hydraulic Cam but that might be a bit small to work with a 3:73 Gear.It ran real good at low RPM on the street though.I decided to change the Cam to a Lunati 574/588 Lift.That Cam seemed to be Lopey but at least the engine Idled.Not quickly, but it didn't take 10 minutes like the 248/248 Competition Cams.I definately want 3:73's in there now especially with no overdrive.Im not sure if I could get some aftermarket Aluminum head's that would give me even more power from off Idle to 5500 RPM's.I heard of the Holley Oval port's which came out not to long ago.Those heads actually reduce Compression while adding power but I don't know by how much.