Thread: Roush 427R - Any regrets?
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Old 05-01-2010, 11:29 PM
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Hammer65 Hammer65 is offline
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Join Date: Nov 2006
Location: Sammamish, WA
Cobra Make, Engine: Superformance #2743, Roush 427SR
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Seems to me that to get to 550 HP, the 427 R with a single plane manifold is the choice. As noted at http://www.roushperformance.com/pdfs/427R.pdf. The 427 SR peaks at about 505 HP with a dual plane manifold.
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