When I traded in my dead late-model (1976) v-drive short block for a Moyer rebuilt v-drive short block, it came built as a late-model engine, but used an early-model block. This was verified by multiple means: Block casting stamp of 1967; Lack of an oil fil cap at the flywheel end; Lack of a distributor hold-down bolthole on the block's accessory drive shroud.
Now I find there's another difference in the blocks. Where the rear cooling jacket drain plug should be, there is nothing. There is, however, a similar plug located approx. 1 1/2" to 2" further towards the rear of the engine. This places it squarely behind the accessory drive. The old engine's plug was positioned such that a long 1/8" pipe nipple could be fitted to it and it would come out in the space between the accessory drive's pully and the accessory drive itself. This is impossible with the plug that this engine has.
So, I have a couple of questions:
1. Is this inaccessable plug actually a coolant drain plug, or is it another oil pressure port?
2. If it is a coolant drain, what do early-model engine owners do about extending it?
Now I find there's another difference in the blocks. Where the rear cooling jacket drain plug should be, there is nothing. There is, however, a similar plug located approx. 1 1/2" to 2" further towards the rear of the engine. This places it squarely behind the accessory drive. The old engine's plug was positioned such that a long 1/8" pipe nipple could be fitted to it and it would come out in the space between the accessory drive's pully and the accessory drive itself. This is impossible with the plug that this engine has.
So, I have a couple of questions:
1. Is this inaccessable plug actually a coolant drain plug, or is it another oil pressure port?
2. If it is a coolant drain, what do early-model engine owners do about extending it?
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