Hot Rod's 700-hp 5.7L Hemi Build-Up

Discussion of the 5.7L-6.1L-6.4L HEMIs.

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Hot Rod's 700-hp 5.7L Hemi Build-Up

Postby scottm » Mon Oct 16, 2006 10:12 pm

Check out the Nov 2006 issue of Hot Rod
for their blown 700-hp 5.7L Hemi build-up.

Let me summarize the info you want...

Crate 5.7L Hemi (the baseline) ... 376-hp @ 5700
+ Comp Cam and TTI headers ... 481-hp @ 6500
+ CNC ported heads from MPP ... 524-hp @ 7000
+ Paxton Novi 1500 with an IC ... 712-hp @ 7000
(The motor used the FAST XFI and eDist II mgmt.)

The motor peaked at 10.4 psi and was setup rich.
Imagine an aggressive tune w/ the 6.4L Hemi? :o
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Postby SRT10KLLR » Thu Oct 19, 2006 12:41 pm

You don't have to imagine, lol. I bought a 6.1(370 ci) and had it stroked to a 6.8(413 ci) with a 8.5:1 cr and will be upgrading my turbo from the 60-1 to the GTS 76.
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Postby SRT10KLLR » Thu Oct 19, 2006 12:42 pm

BTW, my friend has a built 6.4(392 ci) with the same GSM supercharger.
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Postby SRT10KLLR » Thu Oct 19, 2006 3:01 pm

The 6.8L will be going into a 2005 Dodge Ram 1500 with a STS turbo kit. The engine is a stroked 6.1L with a forged 3.97" crank, Manley rods, and Ross pistons with a 4.075" bore and 8.5 cr. I was one of the first to stroke the 6.1L but now the flood gates have opened up and parts are being made for others so no more need to special order the parts. Everything from the ARP head & main studs to the pistons and head gaskets were custom.

BTW, I have the 5.7 out of the truck and will be building it into a 426 or 440. And I also have another 6.1L also sitting in the garage. I posted about the 6.8L(413 ci) build a couple months ago but it is finally complete.

Here is a pic of the engine:
Image
Last edited by SRT10KLLR on Thu Oct 19, 2006 3:09 pm, edited 1 time in total.
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Postby SRT10KLLR » Thu Oct 19, 2006 3:02 pm

Here is a pic of the truck:
Image
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Postby V10man » Thu Oct 19, 2006 7:46 pm

Thats just plain awesome . What crank are you going to use in the 5.7 for the 426 or 440 project ?
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Postby hemidup » Sat Oct 21, 2006 1:07 pm

He used the stock 6.1 crankshaft and welded it for a 4" stroke. I used a 6.1 crankshaft and had it offset ground for my 392. I then had it nitrated and cryo treated. The 5.7 comes with a cast crank. The 6.1 comes with a 4340 forged crank. The MP 5.7/6.1 comes with a forged crankshaft and the 6.1 toner ring, but I cant' get an answer on what grade the forging is.
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Postby SRT10KLLR » Sat Oct 21, 2006 3:51 pm

The 426/440 can be made with either the 5.7 or 6.1 blocks and will be using a new 4" forged crank or a billet 4" as an upgrade.
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Postby TrWaters » Tue Dec 05, 2006 4:33 pm

Just a little update. I ordered a MP 5.7 steel crank today. I am number 10 on the backorder list. :(
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Postby SRT10KLLR » Tue Dec 05, 2006 5:00 pm

I have heard that the forged 6.1 crank is better than the MP 5.7 crank.
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Postby TrWaters » Tue Dec 05, 2006 7:17 pm

At this point, neither is available.
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Postby hemidup » Tue Dec 05, 2006 7:29 pm

SRT10KLLR, I talked with Sharadon Performance today and it sounds like he's interested in one of my 6.1 crankshafts for another one of your engine builds. What are you up to now? A 5.7, 370 stroker?
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Postby TrWaters » Tue Dec 05, 2006 8:25 pm

My thoughts are that if and when the 392 hemi is finally available to the public, the 5.7-6.1 cranks will start to appear.
Its just the way Mopar seems to work. :-?
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Postby Bailiesdad » Tue Dec 05, 2006 8:39 pm

SRT10KLLR wrote:You don't have to imagine, lol. I bought a 6.1(370 ci) and had it stroked to a 6.8(413 ci) with a 8.5:1 cr and will be upgrading my turbo from the 60-1 to the GTS 76.


What kind of torque numbers you looking to get? How fast are you planning on turning th engine?

I can also probably scout you up a couple of 6.1 cranks if you need them, my friend says he has access to a couple of new ones.
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Postby TrWaters » Tue Dec 05, 2006 9:02 pm

Sure Pete...I could use a 6.1 crank. What's the info?
Since there are none in any warehouse or parts depot, and none shown in any inventory, with no release date, having an in-service date of 2050 (yes, 2050) and only available someday maybe if ordered thru the Star Center. Give us all the details. We all know that if anyone can do the impossible..its you. :roll:
So.... tell us all the facts. Where located? Price? Part number? Please Pete..please ???????? Now is your time to shine.
Where did you say they were located again?

Thats what I thought. :wink:
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Postby SRT10KLLR » Tue Dec 05, 2006 9:16 pm

hemidup, that one will be probably be just a plain 345 ci because I have stock length billet rods that I did not use on my build.
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Postby SRT10KLLR » Tue Dec 05, 2006 9:20 pm

Bailiesdad wrote:
SRT10KLLR wrote:You don't have to imagine, lol. I bought a 6.1(370 ci) and had it stroked to a 6.8(413 ci) with a 8.5:1 cr and will be upgrading my turbo from the 60-1 to the GTS 76.


What kind of torque numbers you looking to get? How fast are you planning on turning th engine?

I can also probably scout you up a couple of 6.1 cranks if you need them, my friend says he has access to a couple of new ones.


I know a guy running a 426 stroker with 8 psi and he got 635 rwhp. I am shooting for more since he is using a supercharger and I am turbocharged plus I will be going up to 15 psi.

If you can get anything 6.1 related let me know. I especially need a 6.1 oil pump but if you can get any blocks, cranks intake etc. I am game.
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Postby SRT10KLLR » Tue Dec 05, 2006 9:23 pm

hemidup, I just got off the phone with a gentleman who has a '70 Cuda and he wanted to put a 6.1 with a turbo to make 1000hp. He was told it could not be done with the 6.1 block so he is selling it to go to a Nascar type block. I told him I thought it could be possible but that it had not been proven yet. Do you think it is possible?
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Postby Bailiesdad » Wed Dec 06, 2006 9:17 am

"I especially need a 6.1 oil pump but if you can get any blocks, cranks intake etc. I am game"

Give me a call, after we talk, I will see what he can do on these.

He told me the oil pumps would be no problem and on the other parts he would have to check with his contacts. If anyone in DCs system can scrouge them up he will.

The money/payment arrangements would have to be made very clear, just like on any high cost speciality part, before I get the parts for you.

(When I cut him loose to get me the parts, he commits to buy them, when he finds them, without any additional contact. Then you get notified they are on the way.)

Just to let you know, his pricing is always within DCs published pricing schedules.
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Postby Bailiesdad » Wed Dec 06, 2006 9:37 am

TrWaters wrote:Sure Pete...I could use a 6.1 crank. What's the info?
Since there are none in any warehouse or parts depot, and none shown in any inventory, with no release date, having an in-service date of 2050 (yes, 2050) and only available someday maybe if ordered thru the Star Center. Give us all the details. We all know that if anyone can do the impossible..its you. :roll:
So.... tell us all the facts. Where located? Price? Part number? Please Pete..please ???????? Now is your time to shine.
Where did you say they were located again?

Thats what I thought. :wink:


Tom if you want a 6.1 crank, give me a call (just like everyone else), I have a special price just for you buddy :D :D
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Postby SRT10KLLR » Wed Dec 06, 2006 12:02 pm

Bailiesdad wrote:"I especially need a 6.1 oil pump but if you can get any blocks, cranks intake etc. I am game"

Give me a call, after we talk, I will see what he can do on these.

He told me the oil pumps would be no problem and on the other parts he would have to check with his contacts. If anyone in DCs system can scrouge them up he will.

The money/payment arrangements would have to be made very clear, just like on any high cost speciality part, before I get the parts for you.

(When I cut him loose to get me the parts, he commits to buy them, when he finds them, without any additional contact. Then you get notified they are on the way.)

Just to let you know, his pricing is always within DCs published pricing schedules.



I don't have your number.
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Postby Bailiesdad » Wed Dec 06, 2006 3:26 pm

301-277-4433
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Postby hemidup » Wed Dec 06, 2006 4:45 pm

SRT10KLLR, Sharadon Performance is taking a stroked 6.1 and throwing a pair of T 70 Q Trims on it. I guess we'll see then if the block can handle it.
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Postby LUCKY-13 » Sun Dec 10, 2006 11:09 pm

I thought the MP 5.7 came with a cast crank, not a forged one. I have been thinking about build a Hemi but there seems to be alot of confussing. If the MP 5.7 has a forged crank this would help. Is there a diff between the MP 5.7 block & the 6.1 block? As far as strenth. I am wanting to turbo a Hemi so I really dont see the need for stroking and big cubes. But I need a strong bottom end. I know the heads are diff but even the 5.7 heads flow enough to make big power with a turbo setup. Heck if the MP 5.7 would hold up to it I am sure it could make a 1000hp with a the right turbo system.

Is the MP 5.7 block different than the factory 5.7 block? Then there is this 6.4 crate that is suppost to be available. I have not seen where it can be bought. As far as that goes I havnt seen where to buy 6.1 expect from S&P and the few that are making swap kits for them. Mopar doesnt seem to offer them. I would like to turbo one for my car. In time there will be many of them around for parts so it will make a good platform to build & should be easier than finding or buying Big Block parts. But right now I can build a very strong Big Block for less than one of these new Hemi.


I am designing a Twin Turbo kit for the Big Block cars right now but I think in the future a Twin Turbo kit for a Hemi in the A & B & E bodies will be more in demand for people really wanting to step up there performance & keep a good streetable car that will be smooth with loads of power. If the MP 5.7 has a forged crank I feel sure a set of rods & pistons and these engines could very easy put out 800hp with a turbo setup & this would be more than most people even want for a street car setup. A 5.7 could very easy make more power than this but making it & staying together with it is two different things. But there is so many Mustanges running around with 347's that make over 1000hp with heads that dont flow as good as a 5.7 head much less a 6.1 head that making the power with a good twin setup is no problem.


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Postby Bailiesdad » Mon Dec 11, 2006 9:15 am

update:

I just returned the 2 6.1 cranks, I never heard from anyone that wanted them. (not uncommon for internet postings)

The 6.4 crank is in the works, for the guy that called.

PS 5.7 cranks are cast, all others are steel.
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