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Old 05-04-2018, 06:36 PM
 
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Quote:
Originally Posted by southernnaturelover View Post
which 3.4 are you talking about? Ohv or dohc?
ohv
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Old 05-04-2018, 06:55 PM
 
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Question for the experts on here: Which GM V-6s (from the 90's) had that horrible sound under load due to that even-odd firing? Used to sound like the engine was gurgling / drowning... Would be interested if anyone has info / memories of this...
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Old 05-04-2018, 07:32 PM
 
Location: Floribama
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Originally Posted by Boo_Urns View Post
Question for the experts on here: Which GM V-6s (from the 90's) had that horrible sound under load due to that even-odd firing? Used to sound like the engine was gurgling / drowning... Would be interested if anyone has info / memories of this...
You’re probably referring to the multi-port injected ones (MPFI written on the plenum). Starting in 1994 they started using the SFI version, which sounded totally different. I think the Lumina didn’t get the SFI version until ‘95.

FWIW, I always thought they sounded pretty good.
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Old 05-04-2018, 07:34 PM
 
Location: Floribama
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Originally Posted by Ziggy100 View Post
ohv
They were really good engines with the exception of the intake manifold gaskets on the 94+ models. A lot better than the Ford Essex 3.8 that blew head gaskets.
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Old 05-05-2018, 05:26 AM
 
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Quote:
Originally Posted by southernnaturelover View Post
They were really good engines with the exception of the intake manifold gaskets on the 94+ models. A lot better than the Ford Essex 3.8 that blew head gaskets.
And the leaking freeze plugs, and the leaking exhaust gaskets, and the prematurely failing coil packs. I have no idea what happens after 80k miles because I wasn't going to stick around to find out.
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