# sr20 tranny --\> ca18?

**URL:** <https://forums.speedlife.net/t/sr20-tranny-ca18/141737>\
**Category:** Canada Nissan Automotive\
**Created:** [March 7, 2006, 10:58am UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737 "2006-03-07T10:58:29Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![180crazy](https://avatars.discourse-cdn.com/v4/letter/1/c6cbf5/32.png) [@180crazy](https://forums.speedlife.net/u/180crazy)\
**Post date:** [March 7, 2006, 10:58am UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/1 "2006-03-07T10:58:29Z")

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just wondering. :rolleyes:

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**Author:** ![Lo\_2enz0](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Lo\_2enz0](https://forums.speedlife.net/u/Lo_2enz0)\
**Post date:** [March 7, 2006, 11:18am UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/2 "2006-03-07T11:18:26Z")

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i believe you have to just swap out everything from the ca18 one into the sr one. i know mark did it but i can’t remember if it was with a ka tranny for the longer gears

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**Author:** ![Lo\_2enz0](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Lo\_2enz0](https://forums.speedlife.net/u/Lo_2enz0)\
**Post date:** [March 7, 2006, 3:10pm UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/3 "2006-03-07T15:10:06Z")

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did some more reading, and you can swap the ka internals over into the ca bellhousing

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**Author:** ![sil\_eightyRPS13](https://avatars.discourse-cdn.com/v4/letter/s/2bfe46/32.png) [@sil\_eightyRPS13](https://forums.speedlife.net/u/sil_eightyRPS13)\
**Post date:** [March 7, 2006, 9:23pm UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/4 "2006-03-07T21:23:31Z")

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no internals…just swap the bell housings for the KA,CA,SR to be compatable…the SR, and KA have the wider 5th gear, so better for higher top speeds…also a newer rear end 91+ will also help a higher top speed…i am currently running a KA tranny, and 92 s13 rear end…and i love how wide 5th gear is now…

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**Author:** ![Lo\_2enz0](https://avatars.discourse-cdn.com/v4/letter/l/90db22/32.png) [@Lo\_2enz0](https://forums.speedlife.net/u/Lo_2enz0)\
**Post date:** [March 8, 2006, 1:25am UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/5 "2006-03-08T01:25:05Z")

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i have to admit, i do hate the 5th gear on the ca18. really after 4th its over and there really isn’t anymore pull and it stops

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**Author:** ![jdms13rhd](https://avatars.discourse-cdn.com/v4/letter/j/f05b48/32.png) [@jdms13rhd](https://forums.speedlife.net/u/jdms13rhd)\
**Post date:** [March 8, 2006, 5:56am UTC](https://forums.speedlife.net/t/sr20-tranny-ca18/141737/6 "2006-03-08T05:56:55Z")

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you prob herd of people swaping the KA internals to the RB20 tranies.