Mr.RNR Posted January 27, 2015 Report Share Posted January 27, 2015 Which of this two is the best option? input shaft for t-case or output shaft from 4l80e? Quote Link to comment Share on other sites More sharing options...
MID12sSSS Posted January 27, 2015 Report Share Posted January 27, 2015 (edited) Input shaft for t-case. The input shaft method installs a bigger, thicker piece made to fit the bigger tail shaft of the 80e. The 80e output shaft method is a turned down shaft to fit into the smaller 65e t-case input, and this "theoretically" is more prone to brake. I'd rather build the t case up to fit the 80, then turn the 80 down to fit the t case.... If that makes sense. Edited January 27, 2015 by MID12sSSS (see edit history) Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted January 27, 2015 Report Share Posted January 27, 2015 Input shaft for t-case. The input shaft method installs a bigger, thicker piece made to fit the bigger tail shaft of the 80e. The 80e output shaft method is a turned down shaft to fit into the smaller 65e t-case input, and this "theoretically" is moe prone to brake. I'd rather build the t case up to fit the 80, then turn the 80 down to fit the t case.... If that makes sense. This^^^^ Quote Link to comment Share on other sites More sharing options...
Mr.RNR Posted January 28, 2015 Author Report Share Posted January 28, 2015 If that makes sense. yes it does. Quote Link to comment Share on other sites More sharing options...
Time2Kill Posted February 20, 2015 Report Share Posted February 20, 2015 I'm the guy that makes the input shafts for the t-case. I've had guys running over 1600hp thru these, and have NEVER had a single failure. Ask around about turning down the output shaft, you'll find several failures pretty quickly with much less HP. Quote Link to comment Share on other sites More sharing options...
04VRsilveradoSS Posted May 8, 2016 Report Share Posted May 8, 2016 I'm the guy that makes the input shafts for the t-case. I've had guys running over 1600hp thru these, and have NEVER had a single failure. Ask around about turning down the output shaft, you'll find several failures pretty quickly with much less HP. How can i order one of those inputs shafts off of you? Im doing a 80 swap now and im trying to get everything together Quote Link to comment Share on other sites More sharing options...
5752 Posted May 8, 2016 Report Share Posted May 8, 2016 Input shaft for t-case. The input shaft method installs a bigger, thicker piece made to fit the bigger tail shaft of the 80e. The 80e output shaft method is a turned down shaft to fit into the smaller 65e t-case input, and this "theoretically" is more prone to brake. I'd rather build the t case up to fit the 80, then turn the 80 down to fit the t case.... If that makes sense. yes...that^^^^ Quote Link to comment Share on other sites More sharing options...
03SSBoy Posted May 8, 2016 Report Share Posted May 8, 2016 PM him Quote Link to comment Share on other sites More sharing options...
TrueBlueSS Posted January 21, 2017 Report Share Posted January 21, 2017 I'm the guy that makes the input shafts for the t-case. I've had guys running over 1600hp thru these, and have NEVER had a single failure. Ask around about turning down the output shaft, you'll find several failures pretty quickly with much less HP. Are these input shafts still available? I'm looking into doing a swap out and upgrade to the 4L80. Quote Link to comment Share on other sites More sharing options...
BaggdSS Posted December 6, 2017 Report Share Posted December 6, 2017 im interested too!! Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted December 7, 2017 Report Share Posted December 7, 2017 T 2 Kill has a feeler thread up for a group buy. http://www.silveradoss.com/forums/topic/90296-original-nvg149-to-4l80e-input-shaft-adapter-group-buy-cheapest-price-ever/ Quote Link to comment Share on other sites More sharing options...
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