454 BBC casting "PERF PASS" - Hot Rod Forum : Hotrodders Bulletin Board
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Old 04-22-2003, 05:50 AM
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Post 454 BBC casting "PERF PASS"

"PERF PASS" is cast into the 454 block I just acquired. It came with a forged crank as well. Is this a Vette engine or what? I assume this means "performance passenger".

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Old 04-22-2003, 06:21 AM
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Not necessarily. The 454 I used in my pro-street car came out of a Suburban and had the same casting mark.

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Old 04-22-2003, 06:30 AM
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all the low deck (non truck engines) had that casting... except mabe this one, i swear to the lord that its not a photo trick
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Old 04-22-2003, 06:33 AM
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if it came with a forged crank and 4 bolt main caps id say that it either came in a corvete or chevelle, what to look for is the casting numbers on the back, just above the tranny mounting bolts, it should read 281 and even better 512, which is the same block as the LS-6 with heavier walls, 4 bolt mains and so on
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Old 04-22-2003, 10:50 AM
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We just bought one with HI PER F9 castings and are also trying to find out what it is.
Have you looked under the valve covers to see if it is a Pass. or truck?
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Old 04-26-2006, 05:57 PM
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My original 79 1/2Ton Chevy Truck heads have the same label on them..
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