Hey guys, i just bought an olds big block. I was told it's a 394. I'd like to know the year so i can see if there's a tri-power manifold set for this beast. Help!
block number year 574534 59-64 577476 61-62 578135 59-60 582813 61-62 582831 59-64 585786 63-64 ALL 394 CU. IN.
Some of this info looks bad to me. But some good. Did this come from the online Olds FAQ? Their info is riddled with bad info on the early rockets. 582813 should be '62 only, and not '61 or any other year. NONE of those casting numbers should be '59-64! They should be '59-60 371, '59-60 394, '61 394, '62 394, and '63-4 394. The blocks are too different from each other to have the same casting number for all years '59-64. As for the original question, on the top of the bellhousing, a 394 will have "4-1/8" cast on to indicate the bore size of a 394.
I have an olds block cast number 582813 and bore measures 4-1/8 but haven't got the 4-1/8 stamped next to block number ? Is this a 394 block? Sent from my ANE-LX1 using The H.A.M.B. mobile app
Need to have it bored and don't want to go through into the water jacket because it has been bored to be a 394 an info would be great Cheers Sid Sent from my ANE-LX1 using The H.A.M.B. mobile app
Sidney I have 2 blocks with same casting number did you ever find out if is a 394 both mine are 4 1/8 bore thanks
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