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01-29-2012, 07:02 PM
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#18 |
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GEARHEAD
Join Date: Aug 2003
Location: MN
Posts: 6,126
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Re: "Will it Ever Get Done?"
Your rear end ratio will be a factor for deciding whether to go over drive or not. Mine was originally a 3.73 rear with a small v8. I grew tired of nearly 3000 rpm on the highway. I kept the TH350 and changed rear ends to a 3.07 and it's about perfect now. With that V6, if you have a 3.73 or 4.11 rear end you will want the overdrive. If you have a 3.07 now you would probably be happy with it and the TH350. Just my opinion, but it comes from my own experience.
As for the 4.3, it is just slightly smaller displacement than my old 283 and more displacement than the original 250. If it has a good cam it should run great in that truck.
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