sureshot007 Posted March 15, 2010 Share Posted March 15, 2010 Are there any sources for aluminum or other lightweight driveshafts? Maybe there is another car/truck that has the same length shaft that I might be able to source from a junkyard? Link to comment Share on other sites More sharing options...
jimoshel Posted March 15, 2010 Share Posted March 15, 2010 Any aircraft supply Co will have aluminum in different sizes, shapes and grades. If I remember right Lamborgini P400S had an aluminum driveshaft. Goodluck finding one of them in the JY. If you have a military facility or tech type colledge close by check when they have surplus auctions. Get lots of good stuff there. Link to comment Share on other sites More sharing options...
89eliminator Posted March 15, 2010 Share Posted March 15, 2010 i think some (all?) of the newer GM duramax diesels had aluminum rear driveshafts. i know i seen one turned into a pretzel at the local diesel pulls last summer. Link to comment Share on other sites More sharing options...
sureshot007 Posted March 15, 2010 Author Share Posted March 15, 2010 How about some specs on the stock longbed driveshaft? Maybe then I can try to find an appropriate replacement. Link to comment Share on other sites More sharing options...
jimoshel Posted March 15, 2010 Share Posted March 15, 2010 Read the thread above you in this forum. Looking for stock driveshaft lengths Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 15, 2010 Share Posted March 15, 2010 http://www.comancheclub.com/forums/viewtopic.php?f=2&t=20131 Tom Woods will make an alloy shaft for you. I had one made up for LWB. Give him a call - good guy to work with. http://www.4xshaft.com/index.html Link to comment Share on other sites More sharing options...
sureshot007 Posted March 15, 2010 Author Share Posted March 15, 2010 http://www.comancheclub.com/forums/viewtopic.php?f=2&t=20131 Tom Woods will make an alloy shaft for you. I had one made up for LWB. Give him a call - good guy to work with. http://www.4xshaft.com/index.html If you don't mind me asking, how much did it set you back? Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 15, 2010 Share Posted March 15, 2010 Many years ago. Best to call with your measurements and ask Tom. Link to comment Share on other sites More sharing options...
sureshot007 Posted March 15, 2010 Author Share Posted March 15, 2010 Thanks for the info, I'll give him a ring tomorrow. Link to comment Share on other sites More sharing options...
WBKrazy Posted March 15, 2010 Share Posted March 15, 2010 there's a few that use aluminum driveshafts.... some crown vics and all the police interceptors, 88-present chevy trucks, and i think maybe 97-up F1fixme's do as well.... Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 15, 2010 Share Posted March 15, 2010 88-present chevy trucks Some of these w. the 1310 series u-joints will work on the longbed MJ. May have to be shortened depending on Chev model and MJ tranny and rear diff. But a good cheaper option if it will adapt. Link to comment Share on other sites More sharing options...
sureshot007 Posted March 15, 2010 Author Share Posted March 15, 2010 Well what if I was tossing a ford explorer 8.8 in the rear - should I not bother with the driveshaft adapter and see about running a ford driveshaft? Link to comment Share on other sites More sharing options...
Wildman Posted March 15, 2010 Share Posted March 15, 2010 For a local source, you might want to check out Fleet Pride over on Walden, near the thruway :brows: They could make one with your supplied yokes. Link to comment Share on other sites More sharing options...
sureshot007 Posted March 15, 2010 Author Share Posted March 15, 2010 One of my other friends mentioned them as well. I was really hoping for an "off the shelf" solution. Avoiding custom parts means I can find a replacement when broken at an event. Link to comment Share on other sites More sharing options...
Wildman Posted March 15, 2010 Share Posted March 15, 2010 Then get 2 made at the same time :D Yea, I know what you mean, the only problem is, finding the right donor, both in length and with the correct yokes :hmm: Link to comment Share on other sites More sharing options...
Pete M Posted March 16, 2010 Share Posted March 16, 2010 Well what if I was tossing a ford explorer 8.8 in the rear - should I not bother with the driveshaft adapter and see about running a ford driveshaft? I don't understand the question. You'll still need a flange adapter. either the bigger Explorer on or the smaller Jeep one. The cop crown vic driveshaft idea sounds intriguing. IIRC, the crown vic uses the correct Jeep u-joint size on their version of the 8.8 and if everything works out right, you just need to grab a couple of cop crown vic driveshafts and have them shortened together (and get the proper 8.8 flange adapter at the same time). car-part.com shows a gazillion of the things available across the country. Link to comment Share on other sites More sharing options...
comanche09 Posted March 16, 2010 Share Posted March 16, 2010 The cop crown vic driveshaft idea sounds intriguing. IIRC, the crown vic uses the correct Jeep u-joint size on their version of the 8.8 and if everything works out right, you just need to grab a couple of cop crown vic driveshafts and have them shortened together (and get the proper 8.8 flange adapter at the same time). car-part.com shows a gazillion of the things available across the country. I researched driveshaft donors extensively a little while back. Unfortunately, the aluminum crown vic DS use a slightly larger U-Joint. Ford Aerostars are another example. The regular (steel) crown vic DS uses the same 1310 Series U-joints. One could run "bastard" u-joints to use the aluminum ones, however. Link to comment Share on other sites More sharing options...
HOrnbrod Posted March 16, 2010 Share Posted March 16, 2010 Well what if I was tossing a ford explorer 8.8 in the rear - should I not bother with the driveshaft adapter and see about running a ford driveshaft? AFAIK, Ford never used an alloy RWD driveshaft w. 1310 u-joints. Your best bets for a lightweight shaft are all GM. The early (94 and below 1st generation models; the later models had 2-piece shafts) S10s or S15s, or the 93-94 up Chev pickups or Suburbans. All will have to be shortened for your MJ and may or may not need new yokes depending on spline count and u-joints. There's no stock lightweight bolt-in driveshaft available for the MJ that will not require modifications that I have found. Link to comment Share on other sites More sharing options...
pilotblake Posted March 16, 2010 Share Posted March 16, 2010 Why? And what is a comanche group 2 rally truck :dunno: Link to comment Share on other sites More sharing options...
Pete M Posted March 16, 2010 Share Posted March 16, 2010 Nothing horribly wrong with the adapter U-joints. I ran 2 of 'em for years (adapting to the ford axles under my 88). :thumbsup: Link to comment Share on other sites More sharing options...
sureshot007 Posted March 16, 2010 Author Share Posted March 16, 2010 Why? And what is a comanche group 2 rally truck :dunno: Why am I looking for a lightweight driveshaft? Trying to reduce rotational mass as much as possible to free up as much horsepower to the wheels as possible (within reason, I'm no going to spend a million dollars on this). Rally is: http://rally-america.com/whatis.php Group 2 is a class for 2wd, with under 3 liter, naturally aspirated motors. Link to comment Share on other sites More sharing options...
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