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New to The Diesel World
I have a 94 2500HD 4X4, 5 speed. At 70 mph, I am running 2000 rpm and it sounds like I need to shift into another gear. At 85 mph the governor kicks in. I am not sure what my gear ratio is. What can I do to fix this problem.
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03, 4X4, 6 Spd, 3.73, 160k miles, AFE Stage 2, 4" Exhaust, & Intake Horn, ATS exhaust manifold, Banks Intercooler, HTT 62/13, F2 100hp injectors, Smarty, TST, SBC DD 3600, Walbro, Carli 2.5 w/bumps (all 4 corners) and SUPER TRUSS. 
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