I have seen a '57 GMC 270 that had the distributor walked up "high" enough that it wouldn't turn the oil pump but still engaged the gear on the cam allowing the distributor to turn and spark to happen. Made a mess of the engine.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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