Got My Rotating Assembly Back From the Balance Shop!

The shop had to take quite a bit of weight off the counterweights on my 440 crank as the bob weight came in at 2,237.1 grams. The combined weight of each piston, pin and rod was 1,533.1 grams. Compared to my existing motor with it's heavy cast pistons, standard pins and six pack rods which combine for a total of close to 2,000 grams that's a weight reduction of 467 grams per cylinder. That's more than a pound per cylinder for a total of 8 pounds. The final residual unbalance on the crankshaft damper end was .4 grams with the unbalance at the drive end at .3 grams. This is the first motor I have had that was balanced and I'm looking forward to .

Thats great, 8+ pounds off the rotating assembly is worth about 17 free HP. 2237 grams is a pretty light bob weight. Whats the combo, mike

It's a 1970 block with a standard stroke factory steel crank, .030 over. Forged Diamond flat tops with the 440 Source tapered I-beam rods. The heads are the 440 Stealth units with a port and bowl cleanup/blend job. These were the first run so I upgraded the retainers and locks as well as adding a second inner spring for the roller cam. The cam is a CompCams HighEnergy retro hydraulic roller. Lift is .538/int, .534/ex, dur is .224/int, .230/ex @ .050, 106' centerline with 110' lobe seperation. The advertised rpm range for the cam is 1,800 to 5,800 which should be just right for the street. The pistons will be at zero deck and the heads are untouched at 84cc. This will give me exactly 10.0 to 1 static CR. The intake is factory six pack with the carbs prepped by ProMax w/jettable plates in the outboards. The exhaust will be factory Hipos with 2.5" all the way back. The trans is a Tremec 5 spd with a Dana 60 out back with 3.54's. I will eventually get it back on the chassis dyno once it's together but I'm going to guess that it will be around 450hp at the flywheel, maybe a hair more. The torque should be somewhere in the Oh $^*! range!