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Old 04-06-10, 01:02AM   #1
ckmam
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Default Does anyone know 428 id numbers?

does anyone know if this is a 4-bolt engine or not by these numbers,
YL 018429 9792968 G128 D
15
Thanks Chris
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Old 04-07-10, 04:55AM   #2
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If I'm not mistaken, it is a 360 HP auto engine, with #46 10.5:1 compression small valve heads, that was cast on August 12, 1968 for a '69 big car. It should have an 066 cam, and it is probably drilled for 4-bolt mains, but will have 2-bolt caps.
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Old 04-07-10, 11:36PM   #3
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Thnak you CHris
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Old 04-19-10, 04:22PM   #4
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G128... is July 12,1968. I have seen more YH code 428's. Never seen a YL before.
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Old 06-01-10, 11:36AM   #5
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The book I have say's that it is YL 1969 Catalina 428 360 hp 400 auto 4bbl with the numbers you gave .
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