Re: Exhaust Manifold
The 351E uses a unique exhaust manifold. It does indeed have the large 'Magnum' ports but it also has the smaller 3 bolt pipe flange like a 305 or 351C. 351M's and other Magnum V-6's usually used the larger 'rib' style exhaust manifold with a large (@3") 3 bolt flange. The 351E exhaust manifold is a bit restrictive, you might not be that much worse off if you port-matched a 305 manifold as best you could. Then again, if you found a couple of 'real' Magnum exhaust manifolds and ran larger diameter exhaust pipes that would be even better than stock. BTW, there were 2 different 351E exhaust manifolds, one with air injection ports and one without.
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