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Old 09-01-2002, 06:55 PM
HotRodMan HotRodMan is offline
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I had a 1966 Mustang with a 289 2 barrel and the factory rated that engine right at 200 horse power. The same engine with the four barrel and intake is rated at 225 horse power. Be sure you use the dual plane design intake manifold. If it doesn't have it already, I would put dual exhaust on it also. I tried headers on mine and it only helped it on top end and I had a lot of trouble with the headers, so I would stay with the stock exhaust manifolds unless that is important to you.
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