Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
01-21-2008, 10:50 PM
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454 block
A friend got a 454 block and we are lost on the numbers on the front pad it has t0625crr and on the back of the block it has 3999289 and it is 4 bolt mains any info would be great.
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#2
01-21-2008, 11:13 PM
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Re: 454 block
That is coded as a 1970 Chevelle 454/450hp with TH400 transmission. The casting number puts it as a 1972 or later dated block.
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2 1971 LS-6 Corvette coupes (Duntov's last stand)
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#4
01-22-2008, 01:04 AM
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Re: 454 block
I'm not aware of any casting dates after the '69 model year using only a single digit to represent the year of manufacture. I believe that stopped with the 1969 castings. Every 1970 and later cylinder case for 454 usage has as an example A 27 70 or B 17 71.
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2 1971 LS-6 Corvette coupes (Duntov's last stand)
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