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post #1 of 29 (permalink) Old 01-10-2019, 10:10 AM Thread Starter
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Replacement motor

I’m looking for some advice on a replacement motor for my 2012 challenger r/t manual transmission.
Will the Mopar performance crate motor part # 68303088 AA work for this car?
What if any modification would be needed to make this work.
I’ve experienced catastrophic failure of the motor so the existing long block is junk and not rebuildable.

Phil
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post #2 of 29 (permalink) Old 01-10-2019, 12:49 PM
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it appears that it would be the same. That is a long block assembly, so it includes heads.

As long as it has VVT, then it should be the same as your original engine

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post #3 of 29 (permalink) Old 01-10-2019, 12:50 PM
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Quote:
Originally Posted by Philzo View Post
I’m looking for some advice on a replacement motor for my 2012 challenger r/t manual transmission.
Will the Mopar performance crate motor part # 68303088 AA work for this car?
What if any modification would be needed to make this work.
I’ve experienced catastrophic failure of the motor so the existing long block is junk and not rebuildable.

Phil

According to the info at Summit Racing,



"This Mopar Performance 68303088AA crate engine is a stock replacement engine an will have the same factory specs as a 2008 to 2018 5.7L engine."


Link:


https://www.summitracing.com/parts/dcc-68303088aa


This does not say the engine will work as a drop in replacement, however. While it may physically fit with no issues whether for example the existing engine controller/sensors are compatible with the engine you'll have to I guess ask Summit Racing.
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post #4 of 29 (permalink) Old 01-10-2019, 11:40 PM
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Quote:
Originally Posted by Rockster View Post
Quote:
Originally Posted by Philzo View Post
I’m looking for some advice on a replacement motor for my 2012 challenger r/t manual transmission.
Will the Mopar performance crate motor part # 68303088 AA work for this car?
What if any modification would be needed to make this work.
I’ve experienced catastrophic failure of the motor so the existing long block is junk and not rebuildable.

Phil

According to the info at Summit Racing,



"This Mopar Performance 68303088AA crate engine is a stock replacement engine an will have the same factory specs as a 2008 to 2018 5.7L engine."


Link:


https://www.summitracing.com/parts/dcc-68303088aa


This does not say the engine will work as a drop in replacement, however. While it may physically fit with no issues whether for example the existing engine controller/sensors are compatible with the engine you'll have to I guess ask Summit Racing.
Yeah, one thing that comes to mind along those lines is the EGR setup on the crate engine - does it have one, if so how to handle that in the car’s (no-EGR) setup, etc.

I’m sure there are others, but that’s the one that pops in my head first.

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post #5 of 29 (permalink) Old 01-11-2019, 05:27 AM
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Quote:
Originally Posted by Nuke View Post
Yeah, one thing that comes to mind along those lines is the EGR setup on the crate engine - does it have one, if so how to handle that in the car’s (no-EGR) setup, etc.

I’m sure there are others, but that’s the one that pops in my head first.
The Eagle 5.7 '09+ doesn't have EGR.

VVT cleaned up emissions so much that EGR wasn't needed. The '03 - '08 5.7s had EGR as well as the early years of the SRT 6.1 ('05-'07?)
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post #6 of 29 (permalink) Old 01-11-2019, 06:30 AM
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Reading through the responses Summit have to various questions about the engine, it sounds like the engine is a 2015+ model. I dont know what, if anything, changed on the 5.7L from 2012 to 2015, but if there were only a few minor differences between the 2, it should work in the OP’s 2012.

(EGR issue doesn’t apply after all due to both engine and car being originally produced using VVT in place of EGR.)
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post #7 of 29 (permalink) Old 01-11-2019, 07:00 AM
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The only thing they changed was the TB as of 2013. Easy enough to take your tb from your 2012.
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post #8 of 29 (permalink) Old 01-11-2019, 07:04 AM
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Quote:
Originally Posted by Rockster View Post
According to the info at Summit Racing,



"This Mopar Performance 68303088AA crate engine is a stock replacement engine an will have the same factory specs as a 2008 to 2018 5.7L engine."


Link:


https://www.summitracing.com/parts/dcc-68303088aa


This does not say the engine will work as a drop in replacement, however. While it may physically fit with no issues whether for example the existing engine controller/sensors are compatible with the engine you'll have to I guess ask Summit Racing.
not quite true, thats a non MDS engine meant for pro touring and resto mod, however it is a current build, so latest and greatest, the issue with installing in a pre 2014 is the tone ring, different tone ring which can be a huge issue, much better to replace with a Mopar long block assembly if you have a failure and probably much cheaper
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post #9 of 29 (permalink) Old 01-11-2019, 10:08 AM
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Originally Posted by stevewhiteparts View Post
not quite true, thats a non MDS engine meant for pro touring and resto mod, however it is a current build, so latest and greatest, the issue with installing in a pre 2014 is the tone ring, different tone ring which can be a huge issue, much better to replace with a Mopar long block assembly if you have a failure and probably much cheaper
Luke

I was under the impression the engine in question was the factory replacement engine for what shipped in the cars from the factory.


If not then my recommendation would similar to yours. Get a factory stock replacement engine (aka a Mopar long block assembly) which should not just not only physically drop in but connect to the car's engine controller and the rest of the car's electrical system and require the least amount of messing around to get running just the factory engine the car came with originally.
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post #10 of 29 (permalink) Old 01-11-2019, 10:50 AM
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