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Old 06-23-2017, 06:29 PM   #37
Hayden Buck
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Join Date: Jun 2017
Location: Davis ok
Posts: 91
Re: 454 + TH400 + 4.11 POSI = no freeway

I have a chevy 350 with a thr400 trans in it and run it at 7 with 100 percent octane and it seems to run great as long as I don't run less than 100 octane. It gets 16 mpg with the trans kit I have in it
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