Re: Advice on the gear ratio for 350 vortec with TH350 -
Stock engine? 3.08's if you don't want it to pull very much comfortably, around a 3.36 or maybe a 3.42 (popular in the 90's 1/2 ton 2WD trucks) if you want it to tow a little better.
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Alex V.
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1967 C10 Suburban, 350/NP435, Green/Green, PS, PB, HD cooling, charging, shocks, and springs.
1985 GMC C3500 SRW, Sierra Classic, 454/TH400, white/blue.
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