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Re: Duramax/Allison downshift?
Does she have tunner or anything on the truck? How many miles are on it? I had an LB7 duramax for 10 years and didn't have much issues, just the known injector problem but that will haze like crazy out the exhaust and full the crankcase with fuel.
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71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop.
07 Silverado Classic 2wd
95 Camaro 427SBC/TH350
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