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Old 02-26-2020, 08:59 AM
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bwcobra15 bwcobra15 is offline
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Join Date: Oct 2000
Location: Midlothian, TX
Cobra Make, Engine: Hurricane 427 Cobra #HM2008, Craft Performance 427w 600hp/600tq, TKO-600 close ratio, original Smiths gauges, lucas switches
Posts: 1,022
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I have 427W with quick fuel 780 carb, TKO600 w/.82 OD, 3.50:1 diff, 15" tires ... and I get 11 mpg AT BEST when cruising on the highway. I'm thinking i'm running about 2700 rpm at 75 mph.

I would have gone with the Tremec Magnum 6-speed with two ODs but the magnum is 3.5" inches longer and my driveshaft would be the size of a Dr Pepper can

I'm thinking of going to 3.27:1 differential .... I have 600+ ft lbs of torque that could pull it I think .


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Bob Worley
Hurricane HM-2008 build is done!! (for now....)
Craft Perfomance 427W / 600hp / 600tq - TKO600

I love it and I need it I bleed it ~ Yeah it's a wild hurricane ~ Alright, hold tight, I'm a highway star!!
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