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Roush 427R - Any regrets? Roush 427R - Any regrets?
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Kirkham Motorsports

 
 
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Old 04-28-2010, 04:18 PM
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Join Date: Apr 2010
Location: Superior Township (Ann Arbor), MI
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Default R vs SR
jhv48...The engine is described as a 427R rated at 550hp. It is also listed as having a dual plane. According to information posted on the Roush website, a dual plane is available on the R...

http://www.roushperformance.com/pdfs/427R.pdf

And, on the above link it says the carb is a 770 with vacuum secondaries, while on the following link says the carb is a 750 with mechanical secondaries...

http://www.roushperformance.com/engines/engines.shtml

The car description does not mention what carb it has. Other than looking through the paperwork that came with the car, are there any other easy ways to tell the difference? Something that a neophyte could actually see?

Thanks all for the posts - interesting.
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