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Old 05-26-2015, 01:36 PM   #1
Mick Je
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Join Date: Jan 2012
Location: Redondo Beach California
Posts: 146
What gears are you running?

I'm in the middle of building a 454 engine for my 70 GMC, I currently run 3.73s but going on the freeway it screams at 3k. I have a TH-400 with 30in tire's on the back, I'm trying to decide to put 3.42s and use 3rd like an overdrive or put 3.55s. Just wonder what some of you guys were running and what rpms you are running at 70.
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