6 speed automatic vs. 4 speed automatic

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Oct 16, 2009 | 01:00 PM

Huntersbo

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From: San Diego, California

6 speed automatic vs. 4 speed automatic

I am wondering how a 6 speed automatic would compare to my 4R75? Would I notice increased fuel economy?

Oct 16, 2009 | 01:05 PM

Bluejay

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From: Burleson/Athens/Brownsboro, TX

Quote:

Originally Posted by Huntersbo

I am wondering how a 6 speed automatic would compare to my 4R75? Would I notice increased fuel economy?

If you are thinking of replacing a 4 speed with a 6 speed, can that be done? Will someone have to write a program for it, using the older engine etc and imploying the 6 speed?

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Last edited by Bluejay; Oct 16, 2009 at 01:40 PM.

Oct 16, 2009 | 01:39 PM

kingfish51

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From: Mount Airy,MD

I do know now that the trannie has it's own computer now with the 6 speed, so that would have to be brought in too.

Oct 16, 2009 | 05:04 PM

glc

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From: Joplin MO

Mark Kovalsky said in another thread that the swap is almost impossible due to the electronics issues. If you are thinking about buying a new truck, by all means get the 6 speed.

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