Thread: How bad is your gas mileage?
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Old 09-21-2020, 11:14 AM
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Moritz55 Moritz55 is offline
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Join Date: Jan 2020
Location: Raleigh, NC
Cobra Make, Engine: Superformance, '65 427/MKIII with Roush V8 - 351W w/770cfm 4BBL Holley, 514hp
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Originally Posted by S1965C View Post
Thank you, Mark. Surprised that with the two light springs your total timing is not all-in well before 4,000rpm. Agree that MSD caps and rotors are an annual maintenance item.
Thanks... I think Roush says RPM should be above 3500 or 3700rpm .. so I just run it around 4000rpm .. to assure Full Advance ...
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Many thanks,

Mark


Superformance: SPO2454 , Titanium w/Black Stripes
Engine: Roush 427SR w/770cfm 4-Barrel Holley
Transmission: Tremec TKO-600
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