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Identifying a 454 block

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Old Apr 20, 2009 | 04:55 PM
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Default Identifying a 454 block
Looking at a 454 bare block.
How do you make sure that it's a real 454 block?

Thanks
Raj
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Old Apr 20, 2009 | 05:19 PM
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Reference the casting numbers here:
http://www.mortec.com/bbc.htm
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Old Apr 20, 2009 | 05:24 PM
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Originally Posted by 427basketcase
Reference the casting numbers here:
http://www.mortec.com/bbc.htm
Perfect.. Thank you
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Old Apr 20, 2009 | 05:25 PM
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Originally Posted by 427basketcase
Reference the casting numbers here:
http://www.mortec.com/bbc.htm
BTW.. do you know how much can I expect to pay for an original 454 block that has no cracks?
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Old Apr 20, 2009 | 06:07 PM
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depends on the casting date, is bored? is it decked? lots of variables $600-$3500.
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Old Apr 20, 2009 | 06:46 PM
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Originally Posted by wer2xu
depends on the casting date, is bored? is it decked? lots of variables $600-$3500.
Thanks... I'll go and look at it tonight.
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Old Apr 20, 2009 | 06:46 PM
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More stuff here.

http://www.nastyz28.com/chevy-engine-code-stampings.php
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Old Apr 20, 2009 | 07:31 PM
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For reference, I gave $750 for a 4 bolt main 454 block that was line honed and rough bored.
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Old Apr 20, 2009 | 11:36 PM
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All you needed to do was measure the bore....
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Old Apr 21, 2009 | 01:08 AM
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For 454 application, the cylinder case has huge cut out reliefs on the bottom of the piston bores. This was necessary to clear the counterweights of the longer stroked crankshaft that gave the 454 specification over the 427 application.
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Old Apr 21, 2009 | 11:34 AM
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Originally Posted by Ironcross
All you needed to do was measure the bore....
Right but a 427 and 454 are 4.250 bore its the crank stroke and the extra clearance (mentioned by early shark) that makes the 454 more noticable
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Old Apr 21, 2009 | 05:33 PM
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Item sold before I got there
Thanks all for the info.
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