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Exhaust manifold swap

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Rivercrest View Drop Down
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    Posted: 10-August-2020 at 4:43PM
Are the exhaust manifolds ported different between a 351 2V and a 351 4V. I know the heads are different ( intake manifold ) so I was just wondering about the exhaust side. thanks to all who reply.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote picon3 Quote  Post ReplyReply Direct Link To This Post Posted: 11-August-2020 at 11:50AM
it's been awhile but I believe that the four valve exhaust manifolds at least the stock pieces are indeed different then the two valve.  Paul
1972 GTS 351CJ-4V black/black
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 11-August-2020 at 2:18PM
The exhaust ports are different, larger on the 4V heads. There were separate manifolds cast for 2V and 4V heads, so find a set that match your heads.  FWIW, the 351M/400 also used the small ports like the 2V, but they are also different, as they extend lower due to the deck height difference.

See more info here:

Vince

1972 Ford GTS Sportsroof - Survivor, One Family car

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 11-August-2020 at 3:16PM
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