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#1 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,248
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Looking for exhaust manifold(s) for 1971 Chevy 402
71 Chevy, SWB, 2WD, 402
Looking for a flawless. Finish doesn't matter, I can have that done. Seems I need at least the RH side without A.I.R ports. I may also be interested in a pair. The part numbers for not A.I.R. are: 3994045 LH 333846 RH I may also be interested in a pair with A.I.R. ports (plugged up), or at least the LH side. One of the manifolds was replaced, and if I remember right it was the LH side. In other words, my manifolds don't match. The part numbers for A.I.R. type are: 343787 LH 353030 RH Incidentally, this truck never had the A.I.R. pump. I don't believe these were replaced before I replaced the one, so if it was the LH side that was replaced, then GM slapped on the A.I.R type w/o it having the an A.I.R. pump. Has anyone seen this? Anyone know the history on A.I.R. emissions? I think I've read that was beginning 1972. I suspect whether or not a truck had A.I.R. varied by State regulation.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#2 |
Registered User
![]() Join Date: Apr 2012
Location: Lehi,Utah
Posts: 1,330
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Re: Looking for exhaust manifold(s) for 1971 Chevy 402
I may have one or a pair with the A.I.R. ports. I will double check what I have if you are interested.
Paul |
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#3 |
Senior Member
![]() Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,248
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Re: Looking for exhaust manifold(s) for 1971 Chevy 402
Thanks Paul. Unless I discover the A.I.R. is wrong for this truck, I'm interested.
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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#4 |
Registered User
Join Date: Apr 2010
Location: McFarland CA
Posts: 1,392
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Re: Looking for exhaust manifold(s) for 1971 Chevy 402
mine are
3994045N
__________________
Pancho 69 c/10 step side 454/400 with 3.07 |
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#5 |
Registered User
![]() Join Date: Apr 2012
Location: Lehi,Utah
Posts: 1,330
|
Re: Looking for exhaust manifold(s) for 1971 Chevy 402
I tried to upload some pictures. I was unable to, got a message saying a security token was missing. Send me your email and I will send you some pictures.
Paul |
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