Identifying Chevy engines
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[[File:Bbc 454 damper.jpg|thumb|left|500px|BBC 454 balancer with inner ring scalloped]] <br style="clear:both"/> | [[File:Bbc 454 damper.jpg|thumb|left|500px|BBC 454 balancer with inner ring scalloped]] <br style="clear:both"/> | ||
| + | ==BBC notched bores== | ||
A BBC block may have bores notched to clear the intake valves. Not present on all BBC engines. | A BBC block may have bores notched to clear the intake valves. Not present on all BBC engines. | ||
[[File:BBC 454 BLOCK NOTCHED BORES.jpg]] <br style="clear:both"/> | [[File:BBC 454 BLOCK NOTCHED BORES.jpg]] <br style="clear:both"/> | ||
| − | + | ==BBC external cues for 2- or 4-bolt bottom end== | |
While not 100%, a Mark IV BBC engine can sometimes be ID'd for being a 2- or 4-bolt bottom end by looking above the filter mount: | While not 100%, a Mark IV BBC engine can sometimes be ID'd for being a 2- or 4-bolt bottom end by looking above the filter mount: | ||
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