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Old 11-18-2010, 03:27 PM   #22
OldCreek
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Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
Re: NV4500 swap is underway

Quote:
Originally Posted by DirtyLarry View Post
Steve,

Indeed, the 6:34 would be nice to have for descending the steep grades we often encounter in the mountains around here or in the AZ/UT Canyonlands but gaining overdrive will be so welcoming I’ll probably forget about the 6:34 granny gear that will be missing. Which do you have in your truck right now?

Don,

I’ve been looking at a few different hydraulic winches. A few multispeed tow truck industry type hydraulic winches as well as a Milemarker HI12000. Whichever comes along cheaper. It will be down a road a ways before that plan comes together as I still need to buy a front bumper (Buckstop) or fab one up. You’re right! The current bumper and Sidewinder will eventually wind up on the K20 wrecker I recently inherited.

I haven’t received the AA kit yet but from the pictures I have found online it looks like the transfercase will be moving back about 5 to 6 inches, which I don’t like. I figured the shafts would need to be reworked, but I am not digging the idea of it moving back that far! I am somewhat considering a 1989 Suburban NP241 sitting at the local bone yard for $100 but nervous about putting it behind the 8.1L. Time will tell once the AA kit gets here and bolted together. If I don’t like the AA goods I may just grab the 241 and do a slip yoke eliminator kit and hope for the best. It would really suck to explode a tcase in the middle of the AZ/UT back country. GM didn’t use 241 behind big blocks, they were always Borg-Warner cases or the 261HD starting in 2001, both with the wrong front output.
In regards to the 261HD driver drop: There was the thread on here, with pictures,from the guy who adapted a 261HD PASSENGER DROP to the back of his Allison 1000. I think you commented on it, also! So it seems that they do exist...but good luck finding one?
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold
1972 C10 5.3L/4L60E 12bolt 5Lug - Sold
1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!
1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold
1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold
1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold)
2003 K2500HD 8.1/Allison1000/NP263
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