C6 6l80 to 4l65 conversion
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On The Tree
Joined: Sep 2008
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From: Newark, Ohio
C6 6l80 to 4l65 conversion I’ve done a ton of searching and can’t find any definitive write-ups as to what all parts would be required to convert a 6l80 c6 to a 4l65e trans.
To my understanding I need the 05 torque tube and I know if it were a t56 car I’d need a tail extension to fit my 08 rear diff but what about the 4l65 to fit my 08 rear diff?
i understand I’ll need a trans controller and just convert the trans in the pcm on my 08 to manual so it doesn’t look for the 6l80. Then run a VSS adapter?
I imagine I can use my shifter assembly? Or would I need to convert to an 05 shifter assembly?
To my understanding I need the 05 torque tube and I know if it were a t56 car I’d need a tail extension to fit my 08 rear diff but what about the 4l65 to fit my 08 rear diff?
i understand I’ll need a trans controller and just convert the trans in the pcm on my 08 to manual so it doesn’t look for the 6l80. Then run a VSS adapter?
I imagine I can use my shifter assembly? Or would I need to convert to an 05 shifter assembly?
lol as much as I hate 6L80's they are better then 4L6anythings.
If you start in 2nd with the 6L80 its close to a 4L80. 2.48, 1.48,1 ratios vs 2.36, 1.53, 1.15
If you start in 2nd with the 6L80 its close to a 4L80. 2.48, 1.48,1 ratios vs 2.36, 1.53, 1.15
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Verdad Gallardo it can be done but if for pure drag racing purposes than just go with the th400 otherwise the built 4l60e is NOT going to hold anymore power than the 6l80 ive done tons of research on this and there is Nothing that says the 4l60 is going to be any better its 2 less gears and breaks faster than the 6l80 even built what is factual is the 6l80 has held up to many and i mean alot of 700-850hp cars factory stock the thing is the tuning with the 6l80 thats the key! the 4l60 is just way more common and easier to rebuild the fastest 6l80 factory stock has gone 8 sec 1/4 several outings, the fastest 4l60 high 9s then immediately broke but again im NO expert nor am i a vendor or rep so take this info and do your own research and see for yourself good luck
yea you mention that tuning is the key with the 6l80. That’s the same case with the 4l60. Early on people realized with the 6l80 if you cut the tq management off, it would die a very quick death. Cut the tq management off on a 4l60 and it’ll die too, but not as quick. So think about that for a second. I disable the tq management on my turbo car with a 4l60. Broke it on the second pass after doing that. Coincidence? Fixed the trans, turned tq management back on, 2 years later it’ll still going and with ALOT more power in front of it. It’s not the trans fault most of the time. It’s the tuner and builder.
yea you mention that tuning is the key with the 6l80. That’s the same case with the 4l60. Early on people realized with the 6l80 if you cut the tq management off, it would die a very quick death. Cut the tq management off on a 4l60 and it’ll die too, but not as quick. So think about that for a second. I disable the tq management on my turbo car with a 4l60. Broke it on the second pass after doing that. Coincidence? Fixed the trans, turned tq management back on, 2 years later it’ll still going and with ALOT more power in front of it. It’s not the trans fault most of the time. It’s the tuner and builder.