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part # help please.

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Old Oct 14, 2003 | 07:03 PM
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Default part # help please.
I am looking to find out what part #3946074 is. These heads have a date code of 12-18-66.

Any help is appreciated, Adam.
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Old Oct 14, 2003 | 08:56 PM
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Default Re: part # help please. (CARGASM)
I don't think they came out of A Corvette :confused:
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Old Oct 14, 2003 | 09:00 PM
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Default Re: part # help please. (CARGASM)
Corvette by the Numbers says...

'69 Corvette 427/430hp ZL1 and L88. Also '69 Camaro.
"Totally new design for 1969... also used in '71".
You sure about that date?
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Old Oct 14, 2003 | 09:27 PM
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Default Re: part # help please. (CARGASM)
MORTEC website shows 69 427 L88 ZL1 Aluminum; or 71 454 LS6 round exhaust port.
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Old Oct 14, 2003 | 09:30 PM
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Default Re: part # help please. (CARGASM)
This is from Mortec, http://www.mortec.com/bbc.htm

3946074....69&71...rect...OPEN...'69 427 L88, ZL1, Aluminum, 118cc chamber
'71 454 LS6, "round exhaust port"
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