WTB - 1970 442 W and Z exhaust manifold

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Old Jun 2, 2022 | 07:01 PM
  #1  
cdoering's Avatar
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WTB - 1970 442 W and Z exhaust manifold

Looking for a nice original pair of W & Z exhaust manifolds with no cracks. I'll be at homecoming and the Olds Nationals if can deliver. Let me know what you have for sale.

Sorry title says X & Z (typo error)

Last edited by cdoering; Jun 3, 2022 at 10:26 AM. Reason: correct part needed
Old Jun 3, 2022 | 09:58 AM
  #2  
11971four4two's Avatar
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I have an NOS new GM never bolted on a car , Right side manifold Letter Z passenger side that I could sell
Old Jun 3, 2022 | 10:05 AM
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Originally Posted by cdoering
Looking for a nice original pair of X & Z exhaust manifolds with no cracks. I'll be at homecoming and the Olds Nationals if can deliver. Let me know what you have for sale.
Correct 1970 442 manifolds are W (casting no. 402295) and Z (402294).

There are three different "X" LH manifold castings, all different.
389269 is 1965-68 A-body with 400
406301 is 1971-72 full size with 455
412287 is 1973-74 455 with dual exhaust and is the only one of the three with internally divided runners like the W casting.
Old Jun 3, 2022 | 10:27 AM
  #4  
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Typo error - too fast before posting. I did correct - thanks
Old Jun 3, 2022 | 12:18 PM
  #5  
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Originally Posted by cdoering
Sorry title says X & Z (typo error)
Fixed it for you.
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