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5.7 hemi into 4.7 6 speed truck

Posted By: HotRodDave

5.7 hemi into 4.7 6 speed truck - 03/19/18 07:33 PM

So I just added another truck to my fleet, an 06 6 speed 1500 that has a bad 4.7 and want to swap in a 5.7 any one put one in front of that 6 speed getrag? Is there a big enough cable driven TB to where I can just use the 4.7 computer (with tuning of course) so I don't have to try to fool the 5.7 computer to work with the manual trans?
Posted By: MattW

Re: 5.7 hemi into 4.7 6 speed truck - 03/19/18 11:47 PM

Mopar has a cable driven billet throttle body, but like anything else $$$.
Would like to see your results with the 4.7 ECM running the 5.7.
Matt
Posted By: ric3xrt

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 12:10 AM

On HPtuners there was a guy who used the 4.7 pcm to run A 5.7, also on Hemi Truck Club user DakotaJ has also had success using a4.7 pcm.
As for the Getrag 6 speed, drive it within reason and it'll survive. My biggest contractor @ the day job his daily driver is a 03 4.7 5speed truck that has a mild 5.7 with a Getrag behind it, 55k miles on the combo.
Posted By: MattW

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 08:54 PM

Since your in PA I take it you have the same smog laws as me. No cel light = pass.
I want to do a 04 Dakota 5.7 using the 4.7 ECM.
Matt
Posted By: HotRodDave

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 09:00 PM

I am in montana, no smog check but I don't want lights on the dash.

I have an 04 dakota also that has a 5 speeed I would probably prefer that truck for this project but no motor mounts for it and it would be complicated to fab them and I am not into fab work anyhow, so that ones out of the question for now.
Posted By: MattW

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 10:34 PM

If your Dak is a 4x2 then engineswaps.com has mounts for you. If 4x4 the original hemi perch saw and reweld.
Matt
Posted By: HotRodDave

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 11:32 PM

4x4
Posted By: ric3xrt

Re: 5.7 hemi into 4.7 6 speed truck - 03/20/18 11:33 PM

Shane swapped the pcm over to the 05 set up. The pcm was for a stick truck so it doesn't throw any CELs.
B&G can convert an auto pcm over to manual to avoid the CEL issue.
Posted By: MattW

Re: 5.7 hemi into 4.7 6 speed truck - 03/22/18 04:06 PM

http://www.dakota-durango.com/forum/showthread.php?t=75706
Posted By: HotRodDave

Re: 5.7 hemi into 4.7 6 speed truck - 03/22/18 07:09 PM

forgot the custom oil pan that needs made also
Posted By: HotRodDave

Re: 5.7 hemi into 4.7 6 speed truck - 03/31/18 12:07 AM

so now a 6.4 just showed up on a pallet at my shop, wonder if the trans will handle that, or even if the clutch will hold it?
Posted By: ric3xrt

Re: 5.7 hemi into 4.7 6 speed truck - 03/31/18 04:15 AM

I have a lot faith in the 238 trans........not that much faith
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