3703524 block
12-16-2010, 04:02 PM
#1
Burning Brakes
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3703524 block
i was looking at the date code on a 3703524 block and the date code on the right bellhousing flange is J 1 6. the number on the pad has been removed. is it possible for a 524 block to have a date code that ends in a 6?
12-17-2010, 04:09 AM
#2
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Changed in 56 to the 991 block for the Corvette, still 265 CI.
BUT, I do believe that Chevy passenger cars used the 265 CI block up to and including 1957.
Chuck
12-17-2010, 09:52 AM
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Jim
12-18-2010, 06:13 AM
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You would have thought I'd know that, since I have a 56 Chevy, BUT, my 56 is an old war horse hot rod. Began life as a 6 cylinder 3 on the tree.
NOT much original left on the old girl. I do know that they also carried the 265 CI block into 57. Did they also use the 991 block? The date on this block would indicate usage in a 57 vehicle.
Chuck
12-18-2010, 09:31 AM
#6
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Early in the model year, or so the rumour goes, the 265s were painted yellow or green to visually distinguish them. Late in the model year, the 265s were Chevy orange.
This is an August '57 265.... never rebuilt, never re-painted:
Jim
Last edited by jim lockwood; 12-18-2010 at 09:35 AM.
12-18-2010, 12:00 PM
#7
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'57 265s were a real odd duck. They were made from the same 548 block that was also built out as a 283.
The difference between the two was the bore. If you ordered a base V8 and a manual transmission, you got a 2BBL 265. If you ordered a base V8 and any automatic, you got a 2BBL 283.
Early in the model year, or so the rumour goes, the 265s were painted yellow or green to visually distinguish them. Late in the model year, the 265s were Chevy orange.
This is an August '57 265.... never rebuilt, never re-painted:
Jim
If so, that 'splains the 57 usage date on this particular block.
Chuck
12-18-2010, 07:14 PM
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12-19-2010, 08:49 AM
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I play in the classic chevy arena a lot, and I have seen this before. This is most likely a service rerplacement block. The front pad most likely never had a number, as would also be indicative of service replacement blocks.
55 and 56 blocks were unique, and not considered interchangable with other blocks.
I have seen both 524 and 991 blocks dated well after the usage model year. A friend currently has a 991 block dated 1961 in his garage.
The 57 265 engines (548 block, 3.75 bore) were painted chartruse (kind of bright yellow green). I don't know this for sure, but I seem to recall that these engines were painted this color through most of the model year. Easy to tell them apart on the line.
55 and 56 blocks were unique, and not considered interchangable with other blocks.
I have seen both 524 and 991 blocks dated well after the usage model year. A friend currently has a 991 block dated 1961 in his garage.
The 57 265 engines (548 block, 3.75 bore) were painted chartruse (kind of bright yellow green). I don't know this for sure, but I seem to recall that these engines were painted this color through most of the model year. Easy to tell them apart on the line.
12-19-2010, 06:43 PM
#11
Burning Brakes
Thread Starter
I play in the classic chevy arena a lot, and I have seen this before. This is most likely a service rerplacement block. The front pad most likely never had a number, as would also be indicative of service replacement blocks.
55 and 56 blocks were unique, and not considered interchangable with other blocks.
I have seen both 524 and 991 blocks dated well after the usage model year. A friend currently has a 991 block dated 1961 in his garage.
The 57 265 engines (548 block, 3.75 bore) were painted chartruse (kind of bright yellow green). I don't know this for sure, but I seem to recall that these engines were painted this color through most of the model year. Easy to tell them apart on the line.
55 and 56 blocks were unique, and not considered interchangable with other blocks.
I have seen both 524 and 991 blocks dated well after the usage model year. A friend currently has a 991 block dated 1961 in his garage.
The 57 265 engines (548 block, 3.75 bore) were painted chartruse (kind of bright yellow green). I don't know this for sure, but I seem to recall that these engines were painted this color through most of the model year. Easy to tell them apart on the line.
11-24-2011, 09:14 PM
#12
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524 block code
I own a 265 CI V8 with the block code 3703524. I got it with a 54 vette project car. It has a transmission which is probably a 3 speed but I'm not sure. Also have the original transmission from the 54 vette which is a 2 speed power glide with linkage and shifter. Can anyone tell me what these things are worth.
