512 block question - Chevelle Tech
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post #1 of 13 (permalink) Old Jun 29th, 19, 5:45 PM Thread Starter
 
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512 block question

I have 4-bolt 512 block with a casting date of July 30th, 1970. (G 30 70) It is a CE block with a date code of T080 (August) on the starter pad. The block has been decked and the original numbers and suffix are gone. Here are my questions:
Wouldn't an engine with this casting date be considered a '71 if it weren't for the CE date code on the bottom?
Since it replaced a '70, would it necessarily have been an ls-6 application?? And finally, weren't the high performance GM crate engines stamped on the flat above the timing cover? Just trying to rule out that possibility. Definitely an interesting block and date. Thanks in advance for any helpful information. I'm a sponge for knowledge when it comes to the early big blocks.
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post #2 of 13 (permalink) Old Jun 29th, 19, 9:35 PM
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Re: 512 block question

A CE block doesn't have any original VIN or suffix numbers AFAIK, it would have the CE, probably a 1 for the year and something like 6 digits for warranty tracking purposes, good luck.

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post #3 of 13 (permalink) Old Jun 29th, 19, 10:28 PM
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Re: 512 block question

IRRC, the vin pad above the timing cover started in the late 70's.

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post #4 of 13 (permalink) Old Jun 29th, 19, 10:47 PM Thread Starter
 
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Lol, it's not a fake. I said it was decked and the CE was gone. I suppose I shouldn't have mentioned "suffix". Btw, its not for sale, just looking for answers to a few questions, that's all. But, I understand your skepticism. I've seen a lot of Bubba's handiwork and own none of it.
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post #5 of 13 (permalink) Old Jun 29th, 19, 10:48 PM Thread Starter
 
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Quote:
Originally Posted by SSuper Dave View Post
IRRC, the vin pad above the timing cover started in the late 70's.
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post #6 of 13 (permalink) Old Jun 29th, 19, 11:28 PM
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Re: 512 block question

Quote:
Originally Posted by BBdave View Post
Lol, it's not a fake. I said it was decked and the CE was gone. I suppose I shouldn't have mentioned "suffix". Btw, its not for sale, just looking for answers to a few questions, that's all. But, I understand your skepticism. I've seen a lot of Bubba's handiwork and own none of it.
AFAIK means, as far as I know.

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post #7 of 13 (permalink) Old Jun 30th, 19, 12:07 AM
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Re: 512 block question

Can you supply pictures of the stamping near the starter pad and the casting date clock. I have never seen this. Typical location would be the alt pad which gets obliterated with decking, but on a CE engine anything goes. The installing dealer may have stamped additional locations at his discretion.

The numbers on the pad would designate build date, factory location and a sequence number.

A512 service block, or CE if you will, could have been used in any of these applications or sold as a crate engine:

1969 Corvette 427 engines........15,831.....some early engines might not be #512 blocks.
1970 Corvette 454 LS5.............4,473.......390hp
1971 Corvette 454 LS5.............5,097.......365hp
1971 Corvette 454 LS6................188.......425hp
1969 Impala SS 427................. 2,425.......some early engines might not be #512 blocks.
1970 Impala 454 LS4..............14,280.........345hp
1970 Impala 454 LS5................2,459.........390hp
1971 Impala 454 LS5................6,831.........365hp
1970 Monte Carlo SS 454 LS5....3,823.........360hp
1971 Monte Carlo SS 454 LS5....1,919.........365hp
1970 Chevelle SS 454 LS5.........4,298........includes El Camino SS 454 LS5....360hp
1970 Chevelle SS 454 LS6.........4,475........includes El Camino SS 454 LS6...450hp
1971 Chevelle SS 454 LS5.........7,583........includes El Camino SS454 LS5....365hp

Information compiled by Chevelle Teck member mr
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post #8 of 13 (permalink) Old Jun 30th, 19, 8:37 AM Thread Starter
 
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I'll get the pics today when I'm at the shop and post this afternoon.
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post #9 of 13 (permalink) Old Jun 30th, 19, 11:51 AM Thread Starter
 
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Casting clock..
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post #10 of 13 (permalink) Old Jun 30th, 19, 11:53 AM Thread Starter
 
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Starter pad date code..
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post #11 of 13 (permalink) Old Jun 30th, 19, 11:54 AM Thread Starter
 
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Casting date.
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post #12 of 13 (permalink) Old Jun 30th, 19, 11:57 AM Thread Starter
 
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Quote:
Originally Posted by LeoP View Post
A CE block doesn't have any original VIN or suffix numbers AFAIK, it would have the CE, probably a 1 for the year and something like 6 digits for warranty tracking purposes, good luck.
LeoP, my apologies sir, I'm not familiar with the lingo.. I hope you understand my confusion lol. It's all good!! 🍻
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post #13 of 13 (permalink) Old Jun 30th, 19, 9:57 PM
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Re: 512 block question

AFAIK, means As Far As I Know!!

Leo Paugh
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