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#1
03-13-2003, 02:39 PM
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LS-6 correct date heads
My LS-6 chevelle is a late January 1970 built car,I'm gonna be getting heads for it.I need to establish what the correct dates should be for the heads; early January,December,November?
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1970 Ls6 Chevelle 
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#2
03-13-2003, 03:54 PM
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Re: LS-6 correct date heads
Go with the Tonawanda build date stamped on the engine pad.That is when the engine was a running unit,and heads should not exceed this date.
Figure 6 to 8 weeks max before it,as an average,not always so though. Nearest date you can find to your Tonawanda date,but not after,the better.
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#3
03-13-2003, 06:12 PM
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Re: LS-6 correct date heads
Mr70,
Unfortunately, I don't have the original block for my car so I can't go by that. But 6-8 weeks back helps me though. Nice L-78 you got,it's the same exact colour as mine.
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1970 Ls6 Chevelle
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