3782870 Casting

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Jul 27, 2009 | 08:49 PM

raritan

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3782870 Casting

Do all corvette engines have the 2 to the left of the casting number.
ie 2
3782870
thanks

Jul 28, 2009 | 02:24 PM

JohnZ

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From: Washington Michigan

The "2" is a foundry pattern number - there were MANY multiple patterns for high-volume castings. The 870 block wasn't unique to the Corvette - it was used in millions of passenger cars and trucks too; the block was the same for all applications - only the innards and bolt-on parts made it a "Corvette engine".

Jul 28, 2009 | 04:46 PM

Woodie

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From: whitney pt. N.Y., USA ny

But the dates also made a difference if I'm not mistaken. As I have two 1963 Corvette engines that use just the 3 in the date code but I have an 870 block with a date code of 63 which is not a Corvette engine

Jul 29, 2009 | 01:55 PM

JohnZ

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From: Washington Michigan

Quote:

Originally Posted by Woodie

That's correct - if the date code has two digits for the year portion and there's no plug at 11 o'clock just above the timing cover, it's a Tonawanda block, and they weren't used in Corvettes.

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