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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#32022 02/09/2005 4:17 AM | Joined: Nov 2004 Posts: 7 Junior Member | | Junior Member Joined: Nov 2004 Posts: 7 | I have a 57 NAPCO panel with the original 4 speed tranny. There is an intermediate shaft between the tranny and the transfer case. So I'm looking for a 5 or 6 speed, 2WD tranny that will handle 6000 lbs. 3.91 gears, I'd be happy to have a bellhousing made. All the trannys I find don't look heavy enough to handle the load. Any suggestions? | | |
#32023 02/09/2005 7:33 PM | | Anonymous Unregistered | | Anonymous Unregistered | Clark 5 speed from the same era? Most versions had fifth gear direct, but there was a version in which fifth was overdrive. They are pretty big though(used in the bigger trucks of that period) and getting hard to find. | | |
#32025 02/10/2005 5:56 AM | Joined: Oct 2003 Posts: 54 Member | | Member Joined: Oct 2003 Posts: 54 | NV 4500 or NV 5600? Both are modern 5/6 speed manuals. Both should easily hold up to any motor of that era; they are used behind the cummins. Easy to adapt to 350-style bellhousing pattern. NV4500 rated at 19500# GVW, with .73 OD. NV 5600 rated at 26000# GVW, .73 OD. Just a thought. | | |
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