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Old August 18th, 2011, 04:22 PM
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help on identifying engine
I am having trouble identifying my engine. These numbers are just obove the timing chain on the block and I cant find any corresponding numbers through various databases I have searched. Anyone have a clue on the year and motor type 330 or 3350. The engine is in a 1965 F85 The #'s if you cant make them out are 4790GM5 OLG. Totally confused I appreciate the help. Thanks

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Last edited by dabone70; August 18th, 2011 at 04:53 PM. Reason: typo's and added further information
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Old August 18th, 2011, 08:00 PM
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That's a 307.
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Old August 18th, 2011, 09:25 PM
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How do you know? Where can I find more info and what year/s did they make a 307 for the olds? I appreciate the help
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Old August 18th, 2011, 09:54 PM
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1985-1990 Oldsmobile 307 5.0L 4790GM5.0LG I found this block on ebay and that's the years it had.
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Old August 18th, 2011, 11:29 PM
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That would be a roller block then (roller cam shaft).
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