5.7 to 6.4 stroker

[Born N' Raised]

Alright guys, first actual post on the new forum so don't beat me up too bad. And yes I've already searched . JK. But really. I have searched.

Anyway, Manley Performance released their new 2014 Catalog with an updated stock list of valvetrain and rotating assy components. Seeing that I'm the "It's never good enough" kind of guy, I was seeing if anyone has had experience stroking out the 345s to a 392ci. Yeah, I've seen it done in the past on challengers, magnums, and what have you, but come on. I'm a truck guy. My 2014 sport will arrive by rail in a couple of weeks so I'm planning on performing some heavy modifications when the warranty gets close to running out (ie. stroker rotating assy (low comp. ratio), then slap a kenne bell on top of that, and hopefully by then there will be more performance support for the 8HP70's.) So I e-mailed the guys at Manley and asked what they new about stroking out the newer('12-up) hemis. The guy said... well heres the E-mail...
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Hi Chase,

Thanks for your email and interest in Manley Performance. It is greatly appreciated!

Please see catalog pages 162-163 of attached......our 5.7L/6.1L HEMI stroker cranks and rotating assemblies

Yes, you will probably need to notch the block for clearance

I believe most guys delete the MDS but keep the VVT. COMP cams offers a phase limiter
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Hmm. Keeping VVT and deleting MDS. I figured they were going to have to get rid of VVT all together. But I guess not. I just dont know, and one source is not enough for me to say okay lets do it. Block clearancing I was expecting.

Any info or where I can find info is greatly appreciated.

Oh, also, anyone know what the 5HP increase is from on the 2014 5.7s vs. the 2013 5.7s? Tuning? They also picked up about 4% in economy.

P.S. The Manley 2014 catalog hasn't been added to their webpage yet, contrary to what it says. so if anyone wants it I'll be more than happy to e-mail it to you. Bout 5 MB.

Thanks though.

 

[Jerseymike]

The 2013s are rated at 395hp. A 5hp increase over 2012 due to electronic power stearing. Are you saying the 2014s are rated at 400hp??

 

[FancyStancy]

Not related to the topic, but your avatar is hilarious lol

 

[Born N' Raised]

My bad. Forgot 2013 had 395 as well. 2014 is the same. I've been looking at so many numbers lately I'm confusing myself. My dad has a 2012 though and it has the EPS as well so I'm not sure what it's from. From what I gathered, they just tuned the VVT a bit more and then made the MDS kick in a slight bit earlier to drive the MPG up. could be completely wrong on that though.

Oh and thanks Fancy haha

 

[Exhausted]

so here is my problem with that, even with the stroker set up and a nice size cam you will have to tune it. I have heard that hemi tuning is not as easy as GM with HP Tuners or EFI Live. Am I wrong on that??

 

[Born N' Raised]

Well since diablo now supports 2014s I figured I could get a shop to throw me a custom tune. Yeah it's not easy, but it is definitely possible. Theres a shop near me in NC that's supposed to do some good work. If all else fails, Arrington is just a few hours away. Some of these guys are doing cams heads and then slapping vortechs and whipples on, granted these are mostly pre 2013 (Hemi_Express2013 is having some extensive work done), so I figured the extra displacement was within the realm of tuning possibilities.

 

[Exhausted]

Well since diablo now supports 2014s I figured I could get a shop to throw me a custom tune. Yeah it's not easy, but it is definitely possible. Theres a shop near me in NC that's supposed to do some good work. If all else fails, Arrington is just a few hours away. Some of these guys are doing cams heads and then slapping vortechs and whipples on, granted these are mostly pre 2013 (Hemi_Express2013 is having some extensive work done), so I figured the extra displacement was within the realm of tuning possibilities.

I just dont see that working with a hand held tuner.
there is so much more fuel mapping to do
I buddy of mine owns a shop here and he tunes Vipers too (along with GM stuff) and they require a piggy back module that costs around 1k and then he tunes it

 

[Born N' Raised]

Well I mean if that the case I'll abandon the idea for a while until these get more common to tune. That's why I'm just gathering info right now. Plus, this is my dd so I'm not wanting to do anything that could even potentially be putting me off the road for more than a month. From what I've seen though, the diablo's can handle some hefty stuff, given you invest the time and money into a good person to tune it. If it comes to a piggy back, then I'll just go carb and build up a wedge with an 8-71 and shove it in haha

 

[03MopaRamman]

Tuning gets improved more and more as the New Trucks Age, Like the 3rd Gen Strokers its just a matter of Time. as there are some talented Tuners out There! Welcome to RF!

 

[Exhausted]

Tuning gets improved more and more as the New Trucks Age, Like the 3rd Gen Strokers its just a matter of Time. as there are some talented Tuners out There! Welcome to RF!

heck I would settle for a nice heads and cam setup but tuning is the issue
now 10 years ago the LS movement was starting and tuning wasnt as available as it is today

 

[fasthemiram12]

So many people respond on tis forum with cap they pulled directly out of their A-0.
let me lay it out for ya

so I figured the extra displacement was within the realm of tuning possibilities.

It is... all you would need is stock 6.4 injectors and Sean can tune it.
The extra cubes alone wont effect a tune that much. Sean can work the VE and Fuel tables for that no problem.
Most of youre increase in power comes from Heads and Cam choices not Stroke.

If you do a Stroker kit that uses the standard 4.050 stroke crank you have to run a spacer on the snout of the crank.
The cam phaser limiter is only needed when you run a aftermarket cam.
Personally I would keep it as you can maximize you powerband with it. A good cam upgrade for now would be the 6.4 cam until better tuning evolves for the high dollar aftermarket ones.

Another option is what im doing... I will be using a OEM 6.4 crank that I had machined down to accept SBC Rods and Off the shelf pistons.
With this route I wont need to run the crank spacer and the rods/piston will be cheaper.

 

[ericlee9386]

Have you ever looked into just buying a short block or long block? Unless your building all this stuff yourself its going to cost a lot. Look at shophemi.com, pwrparts.com and highhorseperformance.com. These are all good sites to get a already assembled engine that can save time and money unless you just wanted to build it yourself.

 

[Hemi_Express2013]

So many people respond on tis forum with cap they pulled directly out of their A-0.
let me lay it out for ya



It is... all you would need is stock 6.4 injectors and Sean can tune it.
The extra cubes alone wont effect a tune that much. Sean can work the VE and Fuel tables for that no problem.
Most of youre increase in power comes from Heads and Cam choices not Stroke.

If you do a Stroker kit that uses the standard 4.050 stroke crank you have to run a spacer on the snout of the crank.
The cam phaser limiter is only needed when you run a aftermarket cam.
Personally I would keep it as you can maximize you powerband with it. A good cam upgrade for now would be the 6.4 cam until better tuning evolves for the high dollar aftermarket ones.

Another option is what im doing... I will be using a OEM 6.4 crank that I had machined down to accept SBC Rods and Off the shelf pistons.
With this route I wont need to run the crank spacer and the rods/piston will be cheaper.

Sound advise that the OP could benefit from... Otherwise, he'll need 2 or 3 tunes to run it safely all year with cam and boost. And even if the R&D on my truck produces any good results for the effort, Boost brings things into a different world of tuning. I'm no expert, but I now know enough to realize how involved this can be. We all want power but there's very little support for us. at least, not even close to Ford/Chevy. You"ll have your truck ******* in R&D for 3-9 months and in the end no guarentees and no support when something goes wrong, and believe me something will go wrong requiring a rebuild. There are a few guys out there doing a rebuild or two for running lean/ piston failures/ melted cylinders, Etc. because they didn't realize that there tune was made in june and now in feb at 32 there running more boost and lean. Just my two cents really, but keep it simple.

 

[Born N' Raised]

I know there's a lot more to it than what I've mentioned but for now I'm simply talking about the mechanics of it all. I know tuning will be a big ol beech. All I'm saying is that there are people doing a lot more to these hemi's than just an extra 50ci and 6 pounds of boost. So it should be easy to find someone that can develop a good tune, or 3. If I went standalone, I can make a dynamic tune myself if I can rent a dyno for a few days out of the month. I am looking to do all of the assembly myself so that's not an issue. I have enough mechanical aptitude to do it, so no I'm not going to drop 5k on a short block when I can drop 2400 on a forged rotating assy and work on it as I go. One more thing, I'm not planning to do this for several years. I'm not trying to make enemies here just trying to collect info from the guys that aren't afraid to void warranties, and I do appreciate the input. Supercharger might not even happen, hell who knows, it's all theoretical at this point.
Manley's cranks use the 2" SBC crank journals. Where did the spacer thing come from? I just haven't ever heard of running a spacer on a crank snout for anything unless it's for pulley offset.
Not trying to be a ****, I just take a little offence when people look at me like a kid trying to slap a muffler on his honda saying it'll run 8s.

The 8 speed might be a set back too because it's only rated for about 520 lbf-ft of torque. I haven't heard of these being tuned very much yet so I guess we'll have to wait and see.

 

[LovMyRam]

Said you'll start planning this when your warranty runs out. Check back in a few years. Warranty? Why worry.