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Author Topic: 5 speed swap to 6 speed  (Read 1015 times)

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Offline Rubi03 jef

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5 speed swap to 6 speed
« on: October 21, 2009, 10:17:59 PM »
ok i need some info .. so anyone that can help   please


my 5 speed out of my rubicon 2004 is shot

picked up a 6 speed out of a 2005 rubicon

bellhousing is different at least the cps is not the same .. can someone confirm if i can just use my 04 bellhousing with the 05 tranny

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04 rubicon <4'' X series RC lift, 1.25'' RC body lift, 1'' RC MML, CV rear drive shaft,  Stubby front bumper, CB,35 MTZ" ,Hi Lifter 54'',LED tail lights , flat fenders, LED front Flasher, half doors, Light force spots, and CDN M101 custom Military trailer

Offline 2grand4u

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Re: 5 speed swap to 6 speed
« Reply #1 on: October 22, 2009, 07:41:26 AM »
i think you need to change the ring gear wear the cps reads off of but i'm not a 100% sure.
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Offline hps4evr

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Re: 5 speed swap to 6 speed
« Reply #2 on: October 22, 2009, 10:58:17 AM »
the 6 speed you got is the nsg370, if i remember correctly the bellhousing cannot be removed. the 5 speed you had was the nvg3550.  you may be able to swap the fly wheel and try the later CPS. but i think the later CPS is on the other side and uses a different connector. may still work though. you may be better off rebuilding your 5 speed. over all the 5 speed is a stronger transmission. look around on then net for info on the swap. im sure others have
done it.
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Offline BrokenAxle

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Re: 5 speed swap to 6 speed
« Reply #3 on: October 22, 2009, 10:06:46 PM »
i have heard rumors that using your current flywheel with the new sensor should work - i don't know for sure.  the sensor is different and is on the pass side of the trans for the 6 spd.  and the bell housing is incorporated into the whole trans housing.

so your two options are either cut a hole in the new transmission where the crank sensor is currently and mount the old sensor there.  you've got to be sure about where you are cutting your hole though but i've heard of people doing it successfully.

or you can get a kit that replaces the balancer on the front of the engine and moves the crank sensor up there.
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Offline hps4evr

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Re: 5 speed swap to 6 speed
« Reply #4 on: October 23, 2009, 08:19:32 PM »
good call on the front mounted crank sensor. i forgot about those.
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Offline Rubi03 jef

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Re: 5 speed swap to 6 speed
« Reply #5 on: October 25, 2009, 08:03:06 PM »
i also have the flywheel for the 6 speed .  im just wonding options

 can i get my hands on a 6speed sensor and just splice it into my harness ?

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04 rubicon <4'' X series RC lift, 1.25'' RC body lift, 1'' RC MML, CV rear drive shaft,  Stubby front bumper, CB,35 MTZ" ,Hi Lifter 54'',LED tail lights , flat fenders, LED front Flasher, half doors, Light force spots, and CDN M101 custom Military trailer

Offline BrokenAxle

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Re: 5 speed swap to 6 speed
« Reply #6 on: October 25, 2009, 09:17:17 PM »
i don't think so.  i think the 6 spd has 2 reference points on the flywheel and the 5 spd has 3.  again not 100% sure, but if that is the case then your ecm wouldn't be getting the proper signal and timing would be way out.
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