rgp6373 Posted April 12, 2008 Report Share Posted April 12, 2008 I blew up my 4L65E again , first and second gear were in the pan , I am putting in the 4L80E i have a conversion kit but they told me the driveshafts are different for every truck . Is this true ? what length have other people gone with ? do you have to change both ? Quote Link to comment Share on other sites More sharing options...
usabodyguard Posted April 12, 2008 Report Share Posted April 12, 2008 i in the process right now... 1. install your trans first... 2. measure it... then cut it down. http://coastdriveline.com/ these are the guys i am using... Quote Link to comment Share on other sites More sharing options...
drivetech Posted April 12, 2008 Report Share Posted April 12, 2008 i in the process right now... 1. install your trans first... 2. measure it... then cut it down. http://coastdriveline.com/ these are the guys i am using... He would have to cut the rear drive shaft yes but also lengthen the front Quote Link to comment Share on other sites More sharing options...
usabodyguard Posted April 12, 2008 Report Share Posted April 12, 2008 He would have to cut the rear drive shaft yes but also lengthen the front or add a slip yolk to the front set up? that is what i was told... and im shooting for around 750+ rwhp Quote Link to comment Share on other sites More sharing options...
rgp6373 Posted April 12, 2008 Author Report Share Posted April 12, 2008 i am not sure what kind of power i am running but it broke 2 built 4L65e's and ran a 12.73 1/4 mile with the trans slipping Quote Link to comment Share on other sites More sharing options...
usabodyguard Posted April 12, 2008 Report Share Posted April 12, 2008 GM made car transmissions for our trucks... they all should have come with the 80e to begin with imho.... Quote Link to comment Share on other sites More sharing options...
faceliftedss Posted April 12, 2008 Report Share Posted April 12, 2008 yeah and some more ponies would have been nice. Quote Link to comment Share on other sites More sharing options...
drivetech Posted April 12, 2008 Report Share Posted April 12, 2008 or add a slip yolk to the front set up? that is what i was told... and im shooting for around 750+ rwhpOh ya, no kidding that would be so much easier! Did the extention yolk come with your conversion kit? If so, that's a nice touch. I'll have to remember these guys. Quote Link to comment Share on other sites More sharing options...
stroked out Posted April 14, 2008 Report Share Posted April 14, 2008 my rear drive shaft was shortened an 1inch where my front was Ithink 2-3 inches longer. I'll measure tomorrow to make sure about the front. Quote Link to comment Share on other sites More sharing options...
BlackySS13 Posted May 13, 2008 Report Share Posted May 13, 2008 Who makes conversion kits? Honestly, awd sucks, i'm thinking about going 2wd. Quote Link to comment Share on other sites More sharing options...
oscareltemblo Posted May 13, 2008 Report Share Posted May 13, 2008 http://www.transmissioncenter.net/4l80e.ht...0E%20to%204L80E this is what you need. Quote Link to comment Share on other sites More sharing options...
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