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 Post subject: 4.7 throttle body on 3.7
PostPosted: Fri Aug 29, 2014 11:35 pm 
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Location: Lebanon OR
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

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Fri Aug 29, 2014 11:58 pm 
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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.

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Goodyear Wrangler Duratracs 245/75/R16
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AtTheHelm Front Recovery System

Trailer build thread: viewtopic.php?f=72&t=77997


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Sat Aug 30, 2014 2:22 am 
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If you were to find a 02-06 4.7 with a drive by wire they are interchangeable with the kj

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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Sat Aug 30, 2014 11:23 am 
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what kind of gains do you see on the KK with that modification?

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Sat Aug 30, 2014 11:59 am 
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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.

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2008 Liberty Sport 4x4 Automatic
Image
Jeepin By Al 4" Lift Kit
Goodyear Wrangler Duratracs 245/75/R16
Full MOPAR skid plates
Rock Lizard Skink Super Sliders
AtTheHelm Front Recovery System

Trailer build thread: viewtopic.php?f=72&t=77997


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Fri Sep 19, 2014 11:14 pm 
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Joined: Thu Dec 01, 2011 12:06 am
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Location: Lebanon OR
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...

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Sun Nov 23, 2014 1:23 am 
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Location: Lebanon OR
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.

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Mon Dec 15, 2014 11:44 pm 
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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...

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Tue Dec 16, 2014 12:31 am 
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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

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2002 KJ Limited 3.7, 5.25" lift via coilovers, custom HD rear springs, 32.2" tires on moabs (soon 33s) 4.56/JBA diff, OX lockers front/rear, NP241OR, Parker Fab front/rear bumpers, rock rails and roof rack, Viair OBA.

2006 KJ sport 3.7, 4" Ironman lift, 32" tires, Parker Fab front/rear bumpers and rock rails.


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Thu Dec 18, 2014 12:08 am 
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Location: Lebanon OR
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

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Thu Dec 18, 2014 12:54 pm 
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What made it different? I might be intrested in it for my 06.

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2002 KJ Limited 3.7, 5.25" lift via coilovers, custom HD rear springs, 32.2" tires on moabs (soon 33s) 4.56/JBA diff, OX lockers front/rear, NP241OR, Parker Fab front/rear bumpers, rock rails and roof rack, Viair OBA.

2006 KJ sport 3.7, 4" Ironman lift, 32" tires, Parker Fab front/rear bumpers and rock rails.


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Fri Dec 19, 2014 10:53 am 
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Joined: Thu Dec 01, 2011 12:06 am
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Location: Lebanon OR
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

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02 KJ Limited, 255 70 16 General AT2, Ironman Lift, JCR sliders, Mopar skids, radiator skid, LS/373 gearing, factory front hooks and rear hitch

92 XJ 4.0, AW4, NP242, 31s, 1.75 spacer, ZJ V8 coils, double cherokee leaf pack, 2 inch shackles, dnynomax exhaust, magnaflow cat, front hooks & rear hitch, gas tank skid, front skid, warn t-case skid


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 Post subject: Re: 4.7 throttle body on 3.7
PostPosted: Fri Dec 19, 2014 2:18 pm 
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Joined: Thu Jul 16, 2009 11:34 am
Posts: 1300
Mine is also plastic....

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2002 KJ Limited 3.7, 5.25" lift via coilovers, custom HD rear springs, 32.2" tires on moabs (soon 33s) 4.56/JBA diff, OX lockers front/rear, NP241OR, Parker Fab front/rear bumpers, rock rails and roof rack, Viair OBA.

2006 KJ sport 3.7, 4" Ironman lift, 32" tires, Parker Fab front/rear bumpers and rock rails.


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