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04-01-2019, 09:53 PM
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#1 |
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Registered User
Join Date: Feb 2009
Location: Surrey B.C. Canada
Posts: 255
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Manual to automatic transmission swap
Don’t want to but the towing capacity with my NV3500 is less then the weight of my trailer so need to swap for a 4L60E. Besides the transmission, driveshaft alteration, module or computer for the transmission, what else do I need to consider. Truck is a 97 GMC regular cab short box with a 305 which I am happy with. Looked at an LS swap but don’t want the hassle that comes with it. Haven’t found much in the search on here either.
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Life is too short to drive a boring vehicle. |
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04-02-2019, 04:11 PM
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#2 |
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State of Confusion!
  
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 48,486
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Re: Manual to automatic transmission swap
4L60E is not much better than the NV3500. I have found the biggest limitation was the clutch disc/pressure plate. I have seen way too many 4L60Es die from towing. What are you towing and how often. If it is a lot of towing I would go to a T400 or a 4l80
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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04-02-2019, 05:05 PM
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#3 | |
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Registered User
Join Date: Feb 2009
Location: Surrey B.C. Canada
Posts: 255
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Quote:
Not a lot of towing and not long distance or major inclines. What clutch would you recommend? Posted via Mobile Device |
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04-02-2019, 06:48 PM
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#4 |
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Moderator
 
Join Date: Jun 2017
Location: Greensburg. PA
Posts: 2,324
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Re: Manual to automatic transmission swap
Suggest you look at dual friction plate clutch systems will provide twice the clamping area giving you much more torque capability....$ around $900
IMO...stay away fro 4L60....if you must go auto, go with 4L80e but have it built for towing....and absolutely replace the input shell gear with an upgraded one....$ around $3500 plus everything else you need. 
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Family and country before all others... 2006 Chevy Silverado (Daily Driver) 2025 Chevy Equinox 
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04-10-2019, 08:45 PM
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#5 |
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driving is in my blood
Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,763
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Re: Manual to automatic transmission swap
Why not nv4500?
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me. |
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04-11-2019, 12:22 AM
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#6 | |
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Registered User
Join Date: Feb 2009
Location: Surrey B.C. Canada
Posts: 255
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Re: Manual to automatic transmission swap
Quote:
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