It can be done with a NV4500 from a chevy Only certain years will work.I'm thinking 95, 96 adn 97. Possibly 94. The fifth gear issue does not exist with the Chevy transmissions. The PCM will have to be reprogrammed to remove the automatic transmission settings. Be sure it's the NV4500. Don't get the NV3500 which came in 1/2 ton trucks. You may also consider the 4L80e. They are very strong with heat being one of the few things that will kill them. They are as strong stock as a very well build 4l60e. It should be a slightly easier swap that involves moving the transmission cross-member(easy) and some altering of the PCM. Despite what some may say the 4l60e is NOT a stout transmission. They blow up in trucks that have never towed, forget trucks that tow. They were made for small SUV's and mini-vans. Every fullsize van, truck and SUV should have received a 4l80e. Transmission coolers are the biggest single helper. You may also consider a trans temp gauge. Do searches on google for 4l60e to NV4500(OR)4L80E swap and try fullsizechevy.com . They should be able to help you over there. That all said the 4l60e can be built to handle a stock engine and with coolers and reasonable driving shouldn't do too bad. I've towed 11,000lbs with a 305/4L60E/3.73 combo and the tranmission did alright. What I do when towing is take it easy in 2nd gear. Stay out of 4th gear. Keep the TCC locked as much as possible and let out on shifts. Don't trust the truck for it's very limited torque management. Do it yourself and save yourself some greif. I also have a oversized cooler and keep my temperature under 180F, letting it peak at 210 breifly. If it gets over that, STOP and let the truck idle for 10 minutes. At some point, I'm going switch for Dex VI synthetic, which should also help with oil breakdown at higher temperatures. For 4th gear, if you can keep the tcc engaged, then you should be fine, but it can be hard to keep engaged with any weight behind you.
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Today's Featured Article - Field Modifications (Sins of the Farmer) - by Staff. Picture a new Chevrolet driving down the street without it's grill, right fender and trunk lid. Imagine a crude hole made in the hood to accommodate a new taller air cleaner, the fender wells cut away to make way for larger tires, and half of a sliding glass door used to replace the windshield. Top that off with an old set of '36 Ford headlight shells bolted to the hood. Pretty unlikely for a car... but for a tractor, this is pretty normal. It seems that more often than not they a
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