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Old 03-30-2014, 10:08 AM   #21
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I wish I could get 7.5-8 miles per gallon. My '96 454 dually gets about 6.
Those old Big Block 454's sure sucked down the fuel !!!
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Old 04-01-2014, 02:11 PM   #22
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I averaged 6.5 mph to Florida and back couple years ago with the 6.0L and 3:73. Around the state I average 7.5 towing 12.2 overall
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Old 04-01-2014, 03:16 PM   #23
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My 496 big block gets 7.5 mpg towing the camper and close to 10 without !!
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Old 04-01-2014, 03:38 PM   #24
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Funny I could get 7 - 8 towing and 10 - 11 without in my Silverado SRW 1 ton 8.1L with a 4.10 and an Allison 1000 transmission.
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Old 04-01-2014, 03:47 PM   #25
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My 6.0 gets around 9 towing, have seen 16 on hiway not towing. The 5.3 got around 10 towing. But I`m no speed demon.
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Old 04-01-2014, 05:40 PM   #26
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I used to get around 8 towing with my Vortec 454 and about 10 in town. Went up to about 12 towing and 14 in town with I got my Duramax.
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Old 04-01-2014, 07:43 PM   #27
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My old Burb with the 454 got around 6.5 towing. But it was one heck of a puller!
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Old 04-02-2014, 01:18 PM   #28
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I averaged 6.5 mph to Florida and back couple years ago with the 6.0L and 3:73. Around the state I average 7.5 towing 12.2 overall
of course I was at 15,200lbs on the scale on the way down to Florida!
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