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4.7 throttle body on 3.7
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=4&t=80036
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Author:  jeeptorino68 [ Fri Aug 29, 2014 11:35 pm ]
Post subject:  4.7 throttle body on 3.7

i have heard that a 4.7 throttle body from a 2002 or 2001 and older will fit the 3.7 engines? anyone have experience? is it a bigger bore?
any info?
thanks

Author:  lfhoward [ Fri Aug 29, 2014 11:58 pm ]
Post subject:  Re: 4.7 throttle body on 3.7

Here is a thread about this topic in the KK (2008+) section.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=88&t=79781

Not sure if it works to swap the old school 3.7/4.7 throttle bodies on 2002-2006 KJ's, but the swap does work for the electronic ones from '07 and up. Beginning in 2007 the 3.7 went to electronic throttle control rather than using a cable to control the airflow.

The 4.7 TB is a wider bore (something like 3 inches diameter vs. the 3.7's 2.5 inch diameter). These larger TB's can be found on V8 Dakotas, Durangos, Grand Cherokees, Commanders, Ram trucks, and V10 Vipers. Sometimes this swap is referred to as the Viper throttle body mod, and there is even a selection for that on the aftermarket Hypertech programmer.

Author:  TIJKK1220 [ Sat Aug 30, 2014 2:22 am ]
Post subject:  Re: 4.7 throttle body on 3.7

If you were to find a 02-06 4.7 with a drive by wire they are interchangeable with the kj

Author:  jeeptorino68 [ Sat Aug 30, 2014 11:23 am ]
Post subject:  Re: 4.7 throttle body on 3.7

what kind of gains do you see on the KK with that modification?

Author:  lfhoward [ Sat Aug 30, 2014 11:59 am ]
Post subject:  Re: 4.7 throttle body on 3.7

jeeptorino68 wrote:
what kind of gains do you see on the KK with that modification?

It's in the thread I linked for you above.

Author:  jeeptorino68 [ Fri Sep 19, 2014 11:14 pm ]
Post subject:  Re: 4.7 throttle body on 3.7

thanks for all the info so far.
so it seems the 4.7 throttle body has a larger OD. so the 3.7 intake box that is right ontop of the engine probably wont fit...
has anyone put the 4.7 box on with the 4.7 throttle body?
i know it would look goof to have that on a 3.7 but if it bolted up...

Author:  jeeptorino68 [ Sun Nov 23, 2014 1:23 am ]
Post subject:  Re: 4.7 throttle body on 3.7

got one ordered from ebay for 17$, free shipping, will start by cleaning it, and then boring/polishing it out, and then try to fit it up.

Author:  jeeptorino68 [ Mon Dec 15, 2014 11:44 pm ]
Post subject:  Re: 4.7 throttle body on 3.7

well first attempt failed, got the wrong TB doesnt have the right connections to attach to my throttle cables. plenty more on ebay, then an adaper to make to the airbox and i am all set...

Author:  JeepMorrison [ Tue Dec 16, 2014 12:31 am ]
Post subject:  Re: 4.7 throttle body on 3.7

jeeptorino68 wrote:
well first attempt failed, got the wrong TB doesnt have the right connections to attach to my throttle cables. plenty more on ebay, then an adaper to make to the airbox and i am all set...

Which one did you get? I might buy it off from you

Author:  jeeptorino68 [ Thu Dec 18, 2014 12:08 am ]
Post subject:  Re: 4.7 throttle body on 3.7

it is for a throttle cable unit, but different than my 02 KJ

Image

Image

(i have cleaned it up since then, those are the pictures form the ebay ad

Author:  JeepMorrison [ Thu Dec 18, 2014 12:54 pm ]
Post subject:  Re: 4.7 throttle body on 3.7

What made it different? I might be intrested in it for my 06.

Author:  jeeptorino68 [ Fri Dec 19, 2014 10:53 am ]
Post subject:  Re: 4.7 throttle body on 3.7

the throttle linkage for my 02 was different, mine has a plastic molded connection point, this one is all metal. might work on your 06.

17$ + free shipping
same that i paid on ebay.
pretty cheap to take a chance on, got another one coming to me that should work on my 02

Author:  JeepMorrison [ Fri Dec 19, 2014 2:18 pm ]
Post subject:  Re: 4.7 throttle body on 3.7

Mine is also plastic....

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