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Re: 454 + TH400 + 4.11 POSI = no freeway
Best thing I ever did for my 70 with 350/350 and 31" tires was a 3.07 rear end.
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"Work hard, use your vacation days."
1970 C15 GMC Long Bed
1986 C20 Scottsdale
1983 K2500 Sierra Classic Suburban 6.2
Instagram: C10sofOC
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