5.7 HEMI Vs. 408 Stroker

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I think as with a lot of things, new R&D is never as fast as the sales people say. It's nothing new. "We need a deposit to get you on the list..." How much? "Well, it's easiest to pay the whole thing, then it will ship as soon as they are made." When is that? "Well, right now they are being flogged on a test car, but we should have them ready to go in about 2 months." Ok, here's my card #... 6 mths later... "Hello?" yeah, this is Mr xx... you charged my card 6 months ago, and your delivery expectation was 2 months. I now owe extra money for storage, and I have to move the car because of the weather ands torage for the winter. When are we looking at now? "Well, we did have a couple problems with the foundry... the metal wasnt what it needed to be. We couldnt use the softer stuff... it's just not safe. So we ran a new batch, they are being machined... I think probably another couple weeks and we'll be ready to ship. If you want, we'll overnight yours and bill your card. We still have it on file...." ...fast forward another 4 months... "hello?" Hi, is this mark in tech? mark, I did get me Wdget. But I've got the car apart, and in order to get it to fit,it has to be modified... Is this normal? "Well, it's not a factory part, and Mopars are notorious for loose specs on the unibodies. usually it's just a matter of enlarging the holes and it will jump on itself." Really? Because I enlarged two of the four... but in order to get the other two in the right spot, I'd be grinding thru the side plates. "Oh, well try putting the other side in first." I did... twice... before I oveled the holes. "oh.. really? We've never run int that before. Your car must have been hit..." It's my grandmothers. It was never hit. "Oh. Well... um..." Look, if you can't tell me what I need to do, can you send me another one? Maybe this one's bad... "Well, we dont usually do that because you've already modified it." But you told me that was your next step. "But you did it prior to calling us..." Mark? "Yeah?" You're an _SSHOLE. I'm going to pay shipping to return this POS because I dont think I wat to see it in the scrap pile and when I see you guys at Carlisle I'm going to camp in front of your rig with pictures and yell at people you d__chebag... "Well... um... Let me see what we can do. I have another one, but it's a test model. If you pay shipping, I'll send it to you, and you can keep the first one..."

My favorite line besides "..like 2 weeks..." is "We've never seen that before..." I applaud you finishing that Dart. It is Bad ***.
 
moper said:
My favorite line ... is "We've never seen that before..."
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Oh, man I thought I was the only one. I hope vendors don't get ahold of your list, it's like a training manual!
 
I don't get mad at inexperience or ignorance. Everyone is new at everything once. I do get mad at prepaying and then eating BS for a while. And it doesn't matter the Widget. Seems it's en vogue now to do a press release, get in a magazine, never have the parts in the pipeline, and take payments. I'll put my name on a list, but I'll never prepay (before they are shown in stock to ship) again. I've changed designs and fabbed up stuff to avoid it. It's easier, and sometimes cheaper.
 
well I appreciate everyone's responses. I think I'm going to go with the EFI 408 set up but it might take a little bit considering I'm trying to go to grad school next year and don't have deep enough pockets.

Also my engine has less than 1000 miles since it was rebuilt, how bad of an idea (if possible) to not get the full stroker kit(bearings, etc). Just everything needed to stroke it out(crank, rods,etc.).?????

sorry if this is a ridiculous question I'm learning as I go.

Thanks everyone for everything.
Grant
 
It's a bad idea. You can put the same bearing shells back into the same spot in the block or rod as long as it's all riding on the same crank if they are unharmed. Otherwise you've already crushed that bearing in a bore and if that bore is a different one the crush may be different, like not enough.

Those tabs on the bearings shells only serve to locate them in the bore, it's the crush that keeps them from spinning. Unless of course you've pinned them, which is another story altogether.
 
BTW Chrysler has released 5.7 and 6.1 long blocks at very reasonable prices. Hell a new 5.7 short block is only about $1800.
 
there are several ways of installing the new gen hemi,,all tho i have talked to all of them,,i have not delt with them or purchased any componets for the new gen hemi,.but im highly considering one for my street rod,,if i can find a motor reasonable,,

XV MOTOR SPORTS has a kit, computer, intake and jetted carb for 1300.00 all tho the intake is a single plane its the cheapest kit i know of to get a new gen hemi running,,

then there is arrington engines,, they have a kit to eliminate the computer and go to a distributor,,not cheap and last time i talked with them they still didnt have an exact price,or a supplier for the distributor,,

then there is street and performance,,they were the first to install a new gen hemi in a old school vehicle,,i would talk with them first before i bought any ones parts or kits,,
 
Drivability, torque ?? Hemi , 402 ?? Seems like 6 of one - half dozen of the other to me. Just have to sit down and decide what YOU REALLY WANT, then it's simple. Me ?? I'd buy a stroker kit and be done with it.
 
whats rockin - I am looking at the same deal - but with a 73 Duster - Ive gotten a lot of info from STREET&PERFORMANCE- I started out with going 340 -416 stroker kit after the shop sold my crank - now lost and looking in to the 5.7 HEMI ive got some info with runing a 3.91 gear and a 904 and the math about 21mpgs - now with Abodys you have some clearnce problems with stearing - kframe - But STREET & PERFOMANCE has a DVD that has helped me out a bit u should look at that the phone # is 479-394-5711-
 
also note this web sit CAR-PART.COM you can find used 2003 -04 HEMI with out MDS from salvage Trucks all and all best rout I think
 
if you come across a block with MDS you can get a plug to block it off,,no other mods needed ,,runs like a non MDS motor
 
Well I guess I'm an odd ball... I'm going w/a 5.7L based stroker..... I'll trow the XV intake ontop along w/a **** load of nitrous direct ported of course..... use my built 757, TTI headers and motor mounts and be done......

I have the same stroker in my heavy *** 06 charger and w/full interior I run 11.85 @116.... 4412 lb car too.... now if my Dart is 3200 lbs welll... u can do the math plus the 4.10 gears... lets just say I better be in the mid to high 10's on motor then hit it w/the bottle.... then its game on.

Good luck fellas
 
I built an Eddy headed 408 for my 68 notch, and I can tell you that the difference from my 380 horse 360 crate and 408 are unbelievable. At 95 degrees and my horrible tuning skills as I'm a novice, I went 12.1 @113 without effort. Now that I know to remove the huge coil springs from my MSD and replace with the lighter springs, and run a larger carb, I should be into the 11's with ease. That was also with a mismatching throttle cable and only 3/4 throttle!!!!! This is a pump gas street car by the way. At the Mopar Nats I kicked big block *** all day long in the steet classes. I have an 09 Challenger SRT8 6speed on the way, but I don't think it will hold a candle to the 408 on the track. On the highway, yeah, it may be a different story. But you can't go wrong with the 408. Just my .02.
 
Following this thread ... Mopar Action, in a recent issue states that you can't run power steering with the GenIII hemi(ED: won't fit in the A-body, that is). It's my understanding that this engine is a bit lighter than the smallblock even with alum heads, but just the same, might be a consideration.
 
dartley said:
Following this thread ... Mopar Action, in a recent issue states that you can't run power steering with the GenIII hemi(ED: won't fit in the A-body, that is). It's my understanding that this engine is a bit lighter than the smallblock even with alum heads, but just the same, might be a consideration.
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Remember the new Hemi has aluminum heads. If they did Dimensional Analysis on the LA/Magnum block it would probably be even lighter with aluminum heads.
 
Sorry to revive an old thread but didn't want to start another either.

Are there any updates on these 3G hemi projects?

I just about have all the parts for my 73 Duster/5.7 project. I have the MSD ignition system, XV intake (carbed) TTI mounts and working on the C'ed Durango pan that Sam Harper used.
I'm particularly interested in the Cherokee manifolds that someone was going to modify.

Thx,
 
TxSwimDad said:
Sorry to revive an old thread but didn't want to start another either.

Are there any updates on these 3G hemi projects?

I just about have all the parts for my 73 Duster/5.7 project. I have the MSD ignition system, XV intake (carbed) TTI mounts and working on the C'ed Durango pan that Sam Harper used.
I'm particularly interested in the Cherokee manifolds that someone was going to modify.

Thx,
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I am NOT doing this. However, I am considering it for the future. As such, I am very interested as well, and have been following the topic in general. Mopar Action's last issue shows a '72 Dart Swinger with the 5.7 truck engine. The article points out, if I remember correctly, that the Jeep manifolds worked well. See if you can get a hold of the issue.
 
dartley said:
I am NOT doing this. However, I am considering it for the future. As such, I am very interested as well, and have been following the topic in general. Mopar Action's last issue shows a '72 Dart Swinger with the 5.7 truck engine. The article points out, if I remember correctly, that the Jeep manifolds worked well. See if you can get a hold of the issue.
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That was a FABO member (can't remember his name) who built that Dart. I'm sure he can give you some tips.
 
they guy with the orange dart with the 5.7 is now building a srt 6.1 barracuda, there is a topic on it on this board,,he is using all factory componets,,,


i have been researching this for 2 years,,its not a cheap deal,you can get a motor and trans cheaper then the after market electronics,,if you get a donor vehicle that is the cheapest way,maybe not the easiest way,,

arrington engines has a distributor conversion now,which eliminates all the electronics if you use a carb,,but a intake from mopar for a carb is 800 bucks while they last,,mopar built after market parts are drying up,,,

XV seems to have the cheapest kit ,,if its what it says it is,, they use the F.A.S.T. computer,and from what i just read,,unless XV MOTOR SPORTS is pre programming the puter,,it has no start up program in it,,you need a lap top,,and hopefully F.A.S.T has good tech service,,

the mopar plug and play they say is the easiest computer to program,and is pre flashed for a basic start up program,,you stil need a lap top with this conversion also,,


the people to call on this deal is street and performance, some know it as hot rod lane,, he was the first to do a 5.7 and 6.1 conversion,,and a nice guy to talk too
 
dartley said:
I am NOT doing this. However, I am considering it for the future. As such, I am very interested as well, and have been following the topic in general. Mopar Action's last issue shows a '72 Dart Swinger with the 5.7 truck engine. The article points out, if I remember correctly, that the Jeep manifolds worked well. See if you can get a hold of the issue.
Click to expand...


I think that may have been Sam Harpers Green dart. I have been in contact w/ him. Thanks for the tip, though.
 
gocirino said:
Both!!!
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So your not happy with how your car goes?
Those 6.1's move i hear!
Standard cam still?
Im sure with a reflash/tune an cam they wake up nicely!

Im sorry to hear that.
But as others have told you,man your dart looks AWESOME.
Very impressive!
Ever ran it down the 1/4?


An jimmy,what was your mph when you did the 12.3 ?
 
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