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M3 and M8 are the same but different. W/P, head, probably the rods, crank, gear train will probably swap. The block is different, but the same, there is a casting on the w/p side that, on the M8, is machined out for the oil filler/crankcase vent. Carb, exhaust are unique to the M8 as is the oil pan and lube pump. Brent Mullinshas a good supply of parts for the Greyhound.
No vid yet, but yesterday it moved out of it's spot in the shop, almost had to call a tree surgeon to cut the roots off that it grew because it sat there for so long! I moved it over two spots to make room for a Deuce. The brakes and clutch only needed bleeding, so they were flushed and work good. The engine in this came out of a search light generator, the oil filler is not machined into the block casting, the boss is there, but no holes, so the oil filling location is where the plug in the oil pan is to adjust the lube pump output. It was a cuhnk of 3/4 PVC pipe with duct tape over it. It came up between the coil and oil filter. I made a filler from a SB chevy oil filler, the old type that presses into the front of the intake manifold. Indexed the elbow in the pan so it was angled at apx 45 degrees up, installed a 45 elbow and made a piece pipe welded to the oil filler tube. Now there is crankcase ventilation and a hole larger than 3/4 to add/fill the oil.
No vid yet, but yesterday it moved out of it's spot in the shop, almost had to call a tree surgeon to cut the roots off that it grew because it sat there for so long! I moved it over two spots to make room for a Deuce. The brakes and clutch only needed bleeding, so they were flushed and work good. The engine in this came out of a search light generator, the oil filler is not machined into the block casting, the boss is there, but no holes, so the oil filling location is where the plug in the oil pan is to adjust the lube pump output. It was a cuhnk of 3/4 PVC pipe with duct tape over it. It came up between the coil and oil filter. I made a filler from a SB chevy oil filler, the old type that presses into the front of the intake manifold. Indexed the elbow in the pan so it was angled at apx 45 degrees up, installed a 45 elbow and made a piece pipe welded to the oil filler tube. Now there is crankcase ventilation and a hole larger than 3/4 to add/fill the oil.