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427 SR/TW Roush ? 427 SR/TW Roush ?
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Old 08-14-2010, 09:58 AM
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Originally Posted by vipertocobra View Post
Has anyone upgraded to a bigger carb? I have heard that the 950 Holley works great... any experience? John
Don't know that the 427SR/TW warrants that big a carb. If it's for drag use maybe, but street I would think not. I have the same motor in my SPF GT40. I do track days with it. Swapped the Holley 770 vacuum carb out for a Quick Fuel 750 mechanical. With a wideband A/F meter it is pretty easy to dial in jetting. Also the Quick Fuel allows a lot more adjustability than the Holley. The gas mileage is actually about the same as the Holley vacuum.
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Old 08-14-2010, 01:37 PM
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... If it's for drag use maybe, but street I would think not.
Well, the former owner of 602 was demonstratiing that street was working more than fine...
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