deja Posted July 13, 2006 Share Posted July 13, 2006 He paid $85.00 each for the shafts including a core' date=' these are new / remanufactored. If no core then add $75.00 to it. These are the 4 bolt 300zxt shafts. The 300zxt shafts have 4 bolt instead of 6 bolt and are larger diameter thant the 280zxt shafts. Hope this helps, if you are selling them used, I am not sure what to ask for them. I know the core charge is $75.00 a piece. Hope this helps. John[/quote'] Yes that does help thanks. Quote Link to comment Share on other sites More sharing options...
deja Posted July 13, 2006 Share Posted July 13, 2006 Not that it particularly matters, but I think the 280 shafts are larger in diameter, but also weaker because they use the 3 much larger tripod bearings vs the 6 smaller ball bearings in the 300 CV design. 300ZXT has 4 bolt flanges and have an appropriate shaft length (after flipping cage on the driver's side outer CV). NA 300ZX has 6 bolt flanges, but do not work because the shaft length is too long. The 280ZXT has a shorter CV length so this isn't an issue, and uses 6 bolt flanges that are larger bolt spacing and not compatible IIRC than the NA 300ZX. So basically the NA 300ZX is 6 bolt flange, but not usable and that 6 bolt does not match up to the 280 pattern. OK I'm totally confused now. I will check these out tonight, take some picts, maybe then I'll know what I have. They did bolt up to my 280Z so I assum they are not 300zx???? So it seems more likely they are 300ZXT????? I'm confused about what you mean by "after flipping cage on the driver's side outer CV". Quote Link to comment Share on other sites More sharing options...
JMortensen Posted July 13, 2006 Share Posted July 13, 2006 No CV is going to just bolt up. You have to have the adapter from MM or a 280ZXT companion flange to get them installed. The instructions on flipping the cage come with the MM adapter. Basically when you flip the cage it shortens the CV about 3/8". If you don't do it then the CV can bottom out as the suspension goes through its travel. Here is a pic: Here is a pic of the 300ZXT CV shafts: 280ZXT shafts: Inside the 280ZXT CV (the one on the right, left is a Porsche). See how big it is?: Inside of a 300ZXT CV: Sorry guys, I didn't want to cause confusion. Just pointing out the differences between the designs... Quote Link to comment Share on other sites More sharing options...
deja Posted July 13, 2006 Share Posted July 13, 2006 Cool. We did get one one but it there was no way the second one would fit. We found MM website with his adapters but he still hasn't answered my request for information. No biggy, I decided to stick with the U-joints anyway since I'm not racing my Z and will be running a stock Z28 LT1. Of course that cold always change, LOL. Quote Link to comment Share on other sites More sharing options...
deja Posted July 13, 2006 Share Posted July 13, 2006 280ZXT shafts: After checking what I have, they appear to be 280ZXT shafts. There are 6 bolts in 3 groups of 2, like the ones in this pict. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
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