427 SR/TW Roush ? - Club Cobra

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#3 (permalink)

08-14-2010, 09:58 AM

SwiftDB4

CC Member

Join Date: Jun 2007

Cobra Make, Engine: SPF GT40

Posts: 237

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Quote:

Originally Posted by vipertocobra

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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