Re: 1991 K30 4l80E or NV4500 behind Cummins?
I would go with the stick as I love rowing the gears, but definitely use the close ratio NV4500 as it lends to be more user friendly with the narrow powerband of the diesel and moving a load.
-steve
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Steve
1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's
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