351C/M valve length issues?
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Cargo Master
Joined: Apr 2001
Posts: 2,364
Likes: 3
From: Eustis FL
351C/M valve length issues?
I am having a discussion in another forum. A fella claims that the 351C 2V heads that he put on his 400 don't work, because the length of the VALVES is different... NO, we all know the pushrod length is different, but he says he is using the 400's pushrods, but just the 351C 2V complete head bolted on!
Can anyone confirm the difference in length?
Also, he claims that 351M/400 heads are not the same as 351C 2V because of the smog bumps in the exhaust ports. Did the 351C 2V also get smog bumps in later production? Like, maybe 1972 and on?
Mark
Can anyone confirm the difference in length?
Also, he claims that 351M/400 heads are not the same as 351C 2V because of the smog bumps in the exhaust ports. Did the 351C 2V also get smog bumps in later production? Like, maybe 1972 and on?
Mark
Elder User
Joined: Sep 2001
Posts: 887
Likes: 1
From: Jax FL
351C/M valve length issues?
wow there is a lot here. basicly, in theory, they are the same. they use the same valves, are the same castings.
it has been noted, that exhaust ports do vary from the 351c 2v and the 351M/400 heads. all heads had the exhaust bumps, from my understanding.
im guessing that maybe the 351C heads had been shaved.
it has been noted, that exhaust ports do vary from the 351c 2v and the 351M/400 heads. all heads had the exhaust bumps, from my understanding.
im guessing that maybe the 351C heads had been shaved.
