Exhaust manifold swap |
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Rivercrest
Member Joined: 07-December-2019 Location: Manitoba Canada Status: Offline Points: 175 |
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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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picon3
Senior Member Joined: 20-February-2007 Location: North Carolina Status: Offline Points: 2095 |
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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
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1972 GTS 351CJ-4V black/black
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72FordGTS
Admin Group GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5802 |
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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.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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Rockatansky
Senior Member Joined: 30-July-2010 Location: On The Road Status: Offline Points: 6059 |
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72 GT Ute
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