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Is this VIN/trim tag and block stamp real?

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Old 01-09-2012, 12:08 PM
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JohnZ
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Originally Posted by oldskydog
John,
A techinicality, but I believe they did use rotary mills on the W block engines at Tonawanda /CFD. Don't know for sure, but I suspect the 74 deg angle didn't work with the broach mill. I've never seen a W block without the rotary marks including several NOS examples.
That's correct - the "W" blocks weren't broached - they were rotary-milled.



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