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Old 11-20-2009, 03:39 PM   #1
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Identifying heads

Have a pair of BBC 454 oval port heads. How can I tell if they are the large ports or small ports and if they have the large or small valves?
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Old 11-20-2009, 03:50 PM   #2
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What are the last 3 digits of the casting #? It will be under the valve cover.
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Old 11-20-2009, 04:27 PM   #3
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27fountain/04waverunner/10meter
heads

let me know if you need a set of oval-port heads.i have two sets.one is 66-67 year,closed chamber.needs repairing,and a second set is opean chamber,68-70 year date.both sets are bare.both are large valve version.
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Old 11-20-2009, 05:48 PM   #4
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like eddie said pull a valve cover and find the casting number
then cross reference the number here http://mortec.com/
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Old 11-21-2009, 06:44 PM   #5
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Thanks, found them on the above link.
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