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Re: Rear gear decisions..
I currently am running 33s with 3.73 gears in my k5 and it does great on the highway but it lacks a little down low my motor has a little bigger cam than yours but with the gearing I can hit the freeway and do 70mph without issues. With the lighter chassis of a 2wd and your cam it should do just fine 4.11 you will be wishing you had overdrive at higher speeds. I'll end up going to them in my rig but I don't drive it on the freeway everyday anymore and it's a trail rig so I need more gearing down low
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<Brandon>
1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works. 
1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15
81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in
1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096
1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195
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