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February 20, 2017, 07:54:26 PM *
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Author Topic: Survey - Engine Assembly and Valve Cover Style  (Read 1062 times)
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« Reply #30 on: February 16, 2017, 07:18:06 PM »

.............. it also would be nice to see a survey for all steel hoods which mine has.

If you do that I suggest that you also collect what style/design the hood is and the stamping date of the liner/bottom panel they have to provide the most complete picture and so you don't have to repeat the survey to collect additional data points at a later date  Chug a Lug


Jeff Speegle
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« Reply #31 on: February 16, 2017, 10:41:50 PM »

Four new entries.  The transition date from open to closed COBRA lettered valve covers should actually be identified as a Cleveland engine assembly date.  An actual switch date could be determined with enough engine assembly dates in the February 1966 time frame.  Because we know SAI did not build the cars in the same order as the engines were assembled, we will find a mix of valve cover styles in the SAI VINs, but by engine assembly date there should be no mix.  For example 6s1460 by SAI VIN comes after 6S1449 with an out of order mix, but when you look at their respective engine assembly dates, the corresponding valve cover styles and dates are consistent with early part of February are open letter and later are closed, no mix.  Somewhere between 2-2 and 2-25 was the switch date.  6S1855 is still an anomaly.


* OpenOrClosedCOBRAvalvecovers021617.jpg (59.18 KB, 503x668 - viewed 35 times.)
« Last Edit: February 16, 2017, 11:15:45 PM by 6S1640 » Logged
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« Reply #32 on: February 17, 2017, 02:34:09 AM »

Nice one guys  Chug a Lug


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