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V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

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Old 02-03-2007, 09:23 PM   #1
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4th gen heads
Has anybody flowed the 4th gen 3.4 iron heads? Just wondering if they are any better than the 3.1 irons.
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Old 02-03-2007, 09:49 PM   #2
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IIRC the 2.8 3.1 and 3.4 RWD blocks all used the same heads. the FWD 3400 had better flowing heads.
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Old 02-03-2007, 10:04 PM   #3
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IIRC the 2.8 3.1 and 3.4 RWD blocks all used the same heads. the FWD 3400 had better flowing heads.
Just didn't know if the later model 60* iron heads had any changes to make them flow better. Didn't they switch to a d-port design? I know the AL heads are better, but you have to change the pistons to match. I'm looking to do a head swap and keep my bottom end.
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Old 02-03-2007, 11:57 PM   #4
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I dont remember. some one else should chime in before the end of the weeked I bet though.
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Old 02-04-2007, 03:31 AM   #5
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no D ports on the 93-95 3.4 iron heads
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Old 02-04-2007, 03:31 AM
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