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Re: 88-90 454 gas mileage
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Originally Posted by BayouSS
Of the 2 454SS trucks I have owned, the one with T400 would get 10-12 mpg and the other with a 700R4 replacement trans would get 16 on interstate. Overdrive definitely helps, both had 3.73 gears.
The one I have now with the 572, well.... who knows what it will get, but who cares, all I want to do is finish it so I can enjoy it.
Bill
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are you over on North american truck club??? www.454ss.com
Name looks familiar
Last edited by ProStreet68SB; 02-17-2010 at 01:50 PM.
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