| Matt, I can't find specs on a CWC Hercules engine. The cloest letter models I can find are QXC 221 cu in, WXC-3 383 cu in, WXLC 358 cu in and WXLC3 404 cu in. For a milk truck I would think the engine is probably in the 221 cu in range and may be a variation of the QXC built to Divco's specs. Some QXC specs: 221 cu in, 6 cyl, 3 3/8" x 4 1/8", 77.5 hp @ 3200 rpm, 159 torque @ 1400 rpm. If you have your engine apart to compare, the QXC has 7/8" wrist pins, 2" rod bearings, 7 2 1/2" main bearings, 1 1/2" intake valves, 1 1/4" exhaust valves, 1 1/4" carburator throat, 4 ring pistons (3 compression and 1 oil ring), 1/8" compression ring grooves, 3/16" oil ring grooves, governor was optional equipment as were several compression ratios. Hope this helps. If these specs don't match yours, in size likely for milk truck Hercules also made six cylinder engines in 230 cu in, 237 cu in, 245 cu in, and 263 cu in. Give me size of your parts and I can probably match it to a model. Actually Hercules multi cylinder gasoline engines ranged all the way from the BXB 39 cu in to the HXE 935 cu in and their diesel engines ranged from the DIX83 83 cu in to the DNXV8DTS 1468 cu in, just for a point of interest. These are from their list of engines and specs in 1955. Harold H
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