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Old 10-10-2009, 01:02 PM
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Question WK Researching: 5.7 tranny w/ a 4.7 engine???

I never of this being done. I was wondering about this because if it could be done would it be worth it??? Benefits or Not?? Can a 4.7 engine handle and 5.7 tranny??? More torque?? Better response time??? Longevity of engine??
What do you guys think???
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Old 10-10-2009, 01:17 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

the transmission is the same with the 4.7 or 5.7
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Old 10-10-2009, 01:25 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

Are you sure because wouldn't the 5.7 be a stronger tranny to support its power?? So if its the same...what about 6.1 tranny for a 4.7 engine???
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Old 10-10-2009, 01:34 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

for the power the 4.7 or 5.7 puts down...the tranny is more thgan adequate....no use in upgrading the tranny unless your upgrading the engine....
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Old 10-10-2009, 01:34 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

I guess I shoiuld say drivetrain instead of tranny
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Old 10-10-2009, 01:55 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

the 5,7 limiteds do have the ELSD. i might look into some kind of trak-loc or posi device to add to the rear. then you at least can get 3 wheels spinng. but I would only bother if you 'wheel' or deal with lots of snow.

im going to look for something for the rear of my 4.7.

in my XJ, it came with Trac-Loc in the rear from Jeep along with the Selec-Trac FullTime AWD transfer case. I have been in all sorts iof snow without an issue. I also ride around with 150 lbs of sand abgs on the rear end in the deep stuff/
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Old 10-10-2009, 02:17 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

The SRT comes with the same transmission found on the 3.7 (W5A580). The 4.7 and 5.7 come with the 545RFE.

ELSD is a part of QDII, so if you have a 4.7 with QDII you're still going to have the ELSD's - that's not a feature restricted only to the 5.7.
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Old 10-10-2009, 03:49 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

makes sense guys. thanks 4 the help.
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Old 10-10-2009, 07:20 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

ok so off topic......what do I need in order to do a 6.1 swamp??
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Old 10-10-2009, 07:33 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$..... .....+$1
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  #11  
Old 10-10-2009, 07:34 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

sorry^^^^

you need a complete 6.1 drivetrain, wiring harness and all control modules
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  #12  
Old 10-10-2009, 07:39 PM
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Re: WK Researching: 5.7 tranny w/ a 4.7 engine???

Yep!!! I forgot about that!!!!!!!!!lol. i just did some more research on that and holy crap $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ is right. F-that!!! minus well get a used SRTWK for those prices.
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