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Old 11-07-2018, 09:40 PM   #6
snj8198
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Join Date: Feb 2007
Location: Star Valley, WY
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Re: Cannot decide on trans, been a while

Quote:
I checked with southbend and they don't have a better input shaft for the 10 spline it's only for cummins.
I doubt you'll need a larger input shaft with the 8.1L torque. I'm pushing over 600lb/ft through my stock NV4500 pulling over 10,000lbs with a 12" dual friction clutch. The NV's were rated for like 420ft/lbs or so but they really hold up well as long as a guy isn't hammering on it.
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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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