Walt1967 Posted May 9, 2015 Share Posted May 9, 2015 is there a 13speed transmission that can be swapped out in 91 superliner.it has a 14613b eaton fuller w/425 cat and 4.42 rears.truck pulls good, but tops out around 60 or so mph.looking maybe for a little more legs.i know you can swap tires but just wondering if there is a trans to get more speed Quote Link to comment Share on other sites More sharing options...
Macktech689 Posted May 9, 2015 Share Posted May 9, 2015 Changing the transmission wont help, you will need to change the rear gears to get more roadspeed. Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted May 9, 2015 Share Posted May 9, 2015 can you get a 14613 in a doubble overdrive? i know the smallers ones you could. Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted May 10, 2015 Share Posted May 10, 2015 A T2190 9 speed will have a larger o/d than the 14613 Quote glenn akers Link to comment Share on other sites More sharing options...
Walt1967 Posted May 10, 2015 Author Share Posted May 10, 2015 How much does it cost to switch rear gears? Quote Link to comment Share on other sites More sharing options...
b61mack Posted May 10, 2015 Share Posted May 10, 2015 Do you need a set of 3.65 Quote Link to comment Share on other sites More sharing options...
alex g Posted May 10, 2015 Share Posted May 10, 2015 I'm not sure if I'd rather change a trans or a set of rear ends just the thought of it makes me tired Quote Link to comment Share on other sites More sharing options...
Superdog Posted May 10, 2015 Share Posted May 10, 2015 you can turn 4th and 5th around in the transmission and make it a double over Quote Link to comment Share on other sites More sharing options...
Walt1967 Posted May 10, 2015 Author Share Posted May 10, 2015 If 4th and 5th are turned around how much faster will it go? Quote Link to comment Share on other sites More sharing options...
Superdog Posted May 10, 2015 Share Posted May 10, 2015 my '86 with 3:55's and LP24.5 rubber will top out over 100 mph with a 14613 that's been turned around.I don't what the final OD ratio is in one of these conversions,but it's pretty tall. Quote Link to comment Share on other sites More sharing options...
Timmyb Posted May 10, 2015 Share Posted May 10, 2015 I'm pretty sure rto eaton are single overdrive. Where the rtlo are double. I can't talk for every eaton, but I looked at a single overdrive rto 13 and the overdrive was .86 and the rtlo is .87 in 13/17th and .73 in top. With .73 od and 4.42 you should have 1700rpm at 100km/60m. Quote Link to comment Share on other sites More sharing options...
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