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6.4 hemi, what would i be getting myself into? #2032390
03/16/16 02:26 PM
03/16/16 02:26 PM
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San Diego, CA
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mopar_man619 Offline OP
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I can possibly get my hands on a 6.4 hemi out of a 2013 charger srt8 super bee that has been hit. i would love this engine for my 1967 valiant but do not want to get stuck with something i can't use. i would run it (street/strip) in stock configuration as is being everything checks out, but my ultimate plan is a little boost (turbo). no matter how much i read i still have a little fear id be stuck and unable to get it running with tons of money. anyone have things to look out for ? is the vvt an issue? will it be an issue when i add bewst ? (have semi knowledge on lockout and limiting kits). computer (which i would also get out of donor car). oh also, the engine did run and drive when it was parked. car just wrecked. any help, guidance would be greatly appreciated.
thanks

38233095_07X.JPG
6.4 hemi


1967 Plymouth Valiant Gen III Hemi
11.42@119
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Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2032394
03/16/16 02:30 PM
03/16/16 02:30 PM
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mopar_man619 Offline OP
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also anybody with experience, i would be able to get this into a valiant with the stock k frame. i have read it will be a tight fit but will work with the correct oil pan.


1967 Plymouth Valiant Gen III Hemi
11.42@119
youtube.com/moparman619
Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2032408
03/16/16 02:55 PM
03/16/16 02:55 PM
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hudsonhornet7x Offline
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Although it is easier to swap an earlier hemi I like your choice. The VVT can be locked, so that is not too big of a deal.

I would use the Holley HP fuel injection as it is self learning. Also, the 6.4 pistons are pretty fragile so it would probably be a good idea to swap them out for forged ones if you are planning a turbo setup.

Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2032423
03/16/16 03:18 PM
03/16/16 03:18 PM
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WO23Coronet Offline
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Check with HotWireAuto, they have harnesses and computers for swaps. They reflash factory computers

Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2032544
03/16/16 06:32 PM
03/16/16 06:32 PM
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Nebraska
72Swinger Offline
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You would end up with an 09 Challenger ECU since those are re-flashable, and a Hotwire harness. You will need TTI headers to keep stock K. Figure about $3K for those 2 things alone but if you want to keep it stock, thats how I would go. Just go with a 6.4/manual trans tune and run a 727/904 or about any manual trans out there.


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Re: 6.4 hemi, what would i be getting myself into? [Re: 72Swinger] #2032675
03/16/16 09:33 PM
03/16/16 09:33 PM
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MattW Offline
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My twocents is put the whole thing in. Engine and trans. Get it running enjoy it and then down the road turbo the thing.
Get it going on the stock ECM and youll be surprised at the power.
Hell just going to full lenght headers will net you around 30 to 50 hp?
Matt

Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2032825
03/17/16 12:49 AM
03/17/16 12:49 AM
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70blackfish Offline
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I have a 6.4 in my 69 truck...i went with hotwire auto...some things can be an issue. VVT is your friend!

you can pm me if you want to ask some questions, i will give you my phone number

Re: 6.4 hemi, what would i be getting myself into? [Re: MattW] #2032900
03/17/16 03:29 AM
03/17/16 03:29 AM
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mopar_man619 Offline OP
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so I can use the ecu out of the donor car and trans as is. at what point do you have to send the harness out ? if i were to run a 904 ?
Originally Posted By MattW
My twocents is put the whole thing in. Engine and trans. Get it running enjoy it and then down the road turbo the thing.
Get it going on the stock ECM and youll be surprised at the power.
Hell just going to full lenght headers will net you around 30 to 50 hp?
Matt

Last edited by mopar_man619; 03/17/16 03:29 AM.

1967 Plymouth Valiant Gen III Hemi
11.42@119
youtube.com/moparman619
Re: 6.4 hemi, what would i be getting myself into? [Re: 70blackfish] #2032903
03/17/16 03:31 AM
03/17/16 03:31 AM
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mopar_man619 Offline OP
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thanks. will def be in contact with you !
Originally Posted By 70blackfish
I have a 6.4 in my 69 truck...i went with hotwire auto...some things can be an issue. VVT is your friend!

you can pm me if you want to ask some questions, i will give you my phone number


1967 Plymouth Valiant Gen III Hemi
11.42@119
youtube.com/moparman619
Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2033141
03/17/16 02:15 PM
03/17/16 02:15 PM
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Hot Rod Ridge
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Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2033213
03/17/16 04:05 PM
03/17/16 04:05 PM
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Originally Posted By mopar_man619
so I can use the ecu out of the donor car and trans as is. at what point do you have to send the harness out ? if i were to run a 904 ?
Originally Posted By MattW
My twocents is put the whole thing in. Engine and trans. Get it running enjoy it and then down the road turbo the thing.
Get it going on the stock ECM and youll be surprised at the power.
Hell just going to full lenght headers will net you around 30 to 50 hp?
Matt


Modern muscle performance has what you need to do this.
I would stick with factory trans but they may be able to help you with the 904.
Matt

Re: 6.4 hemi, what would i be getting myself into? [Re: MattW] #2033245
03/17/16 04:52 PM
03/17/16 04:52 PM
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dogdays Offline
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If you have the whole car why would you use a 904?
Just checkin'

R.

Re: 6.4 hemi, what would i be getting myself into? [Re: dogdays] #2033329
03/17/16 07:10 PM
03/17/16 07:10 PM
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mopar_man619 Offline OP
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thats what i will do. will my trans tunnel need to be modified?
Originally Posted By dogdays
If you have the whole car why would you use a 904?
Just checkin'

R.


1967 Plymouth Valiant Gen III Hemi
11.42@119
youtube.com/moparman619
Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2034908
03/20/16 09:53 AM
03/20/16 09:53 AM
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MattW Offline
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I believe so.
Matt

Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2035267
03/20/16 08:08 PM
03/20/16 08:08 PM
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cudaman1969 Offline
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From what I've seen and read, stick with the 904 for the time being. When using new trans there's a very big can of worms you have to get around at this time. Go back into the other posts to read about the Nagg trans issues.

Re: 6.4 hemi, what would i be getting myself into? [Re: cudaman1969] #2035964
03/21/16 08:29 PM
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MattW Offline
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Shouldn't have an issue if he is running the stock ecm?
Or am I missing something?

Re: 6.4 hemi, what would i be getting myself into? [Re: MattW] #2036495
03/22/16 03:09 PM
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dogdays Offline
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That's exactly the point. The ECM uses transmission inputs as well as engine and environmental inputs.

Plus, it's an overdrive transmission and people here have said they're plenty stout.

R.

Re: 6.4 hemi, what would i be getting myself into? [Re: dogdays] #2036898
03/23/16 12:44 AM
03/23/16 12:44 AM
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mopar_man619 Offline OP
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so it would work ? lol
Originally Posted By dogdays
That's exactly the point. The ECM uses transmission inputs as well as engine and environmental inputs.

Plus, it's an overdrive transmission and people here have said they're plenty stout.

R.


1967 Plymouth Valiant Gen III Hemi
11.42@119
youtube.com/moparman619
Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2036971
03/23/16 05:43 AM
03/23/16 05:43 AM
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Nebraska
72Swinger Offline
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The NAG's need a stand alone computer when you take away wheel sensors and speed sensors. PCS is the company IIRC. Yeah it can be done, but the donor cars wiring and computers are basically worthless unless you also use its dash,column,rear axle,abs etc.


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Re: 6.4 hemi, what would i be getting myself into? [Re: mopar_man619] #2037019
03/23/16 10:45 AM
03/23/16 10:45 AM
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http://www.hotwireauto.com/?page=sales-nag1

Hot Wire Auto has a NAG1 set up where you don't need the dash or any of that stuff. You need some of the modules and such, it's in the link. The NAG1 is a sweet transmission, tough as nails

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