Magnum Hemi Swap

[dodgeman360]

Ok here goes.
I built a 76 360, ported polished big valves adj. rockers decked 10 heads 30
but have had nothing but problems,(tick tick tick) Rhoads lifters, hate them and loosing oil pressure....Any way I came across a 2005 5.7 anyone know what tranny's will work behind this. I Currently have An A500 and a 727 both built to the hilt. this is all going in a 76 d100 if I can make it work... Any help will Be greatly appreciated.Thanks!!!!!!!!!!!!!!!!!!

[pcrmike]

Good news, the new hemis take the same bell as the old LA and magnums. :-)PCRMike

[dodgeman360]

what about torque converter? Currently running a 5.9 magnum converter with a balanced flexplate for a la 5.9

[dust]

Better news, see the latest HOT ROD magazine with a tech article on a HEMI '70 Duster

[1973Swinger]

Yep, and they say that the way you can do it is to use a 426 flexplate and a regular old LA style converter by elongating 1 hole in the flexplate. The 727 will bolt right up minus the top bolt. They also mention that there is a 0.060 inch ring-gear misalignment, but apparently it doesnt hurt anything. TTI and Schumaker have the mounts you need and TTI has headers.

[dust]

Originally Posted by 1973Swinger

Yep, and they say that the way you can do it is to use a 426 flexplate and a regular old LA style converter by elongating 1 hole in the flexplate. The 727 will bolt right up minus the top bolt. They also mention that there is a 0.060 inch ring-gear misalignment, but apparently it doesnt hurt anything. TTI and Schumaker have the mounts you need and TTI has headers.

They sure made it look easy, huh?

[1973Swinger]

Originally Posted by dust

They sure made it look easy, huh?

Yeah they did, it actually got me to thinkin about dropping one in my Swinger. I wonder if they make a stroker kit for the 5.7? I know I can get a carb intake and such...

[dodgeman360]

looking for the intake and stuff now, how about ignition ??

[68Coronet_PE]

You should try to track down some articles on the installation of the 5.7 hemi crate motors. Ive seen several articles that describe the process. I don't think the production motor is much different than the crate. I think you could probably order everything you need from mopar performance. At the very least call them up and tell them you have a 5.7 crate motor and pump them for information. Their tech guys are pretty good.

just my two cents

Hope it works out

[dust]

Originally Posted by dodgeman360

looking for the intake and stuff now, how about ignition ??

Why not just use factory for the time being? Don't overcomplicate your project, focus on simpler tasks first. Like getting all the parts to just install the 5.7 into an A-body.

[dodgeman360]

Install isn't the problem you guys have helped out with that its getting it balanced and running

[dodgeman360]

where do I get a neutral balanced converter or is the one I have for a 5.9 magnum neutral balanced?

[dodgeman360]

Got the hot rod mag, u know what they mean about the .060 offset they were talking about?

[dust]

Originally Posted by dodgeman360

Got the hot rod mag, u know what they mean about the .060 offset they were talking about?

.060 offset in relation too...?

[dodger1]

318/5.2 converters are all neutral balance. Not sure when the ring gear migrated to the flexplate, though.

[pcrmike]

The stroker kit for the HEMIs is also available from Indy. They also have complete stroker crate motors. :-)PCRMike

[dodgeman360]

It doesn't say what the .060 offset is in relation to, anyone else seen the lattest hotrod and know what they are talking about. I did find a harness and factory emc to run it.
Dodger1, you said the 318 has neutral balance, are you talking magnum or earlier. so I take it the 360 mag. isn't neatral huh?

[dodgeman360]

[QUOTE=dodgeman360;686154]It doesn't say what the .060 offset is in relation to, anyone else seen the lattest hotrod and know what they are talking about. I did find a harness and factory emc to run it.
Dodger1, you said the 318 has neutral balance, are you talking magnum or earlier. so I take it the 360 mag. isn't neatral huh?

[dodger1]

To the best of my knowledge, all 273, 318, 340, and 5.2L (318 Magnum) are internally balanced and would have a neutral-balance converter and harmonic balancer. ALL 360/5.9 Magnums are externally balanced and need appropriately weighted converters and harmonic balancers, although the 360 LA engines and the 5.9 Magnums have different balancing values and the converters/balancers are not interchangeable. As for the .060 offset, I just read the article, and I believe they are referring to the dimension between the block/ transmission joint and the nominal starter gear engagement point of the ring gear. I might be wrong here, but I can see that a .060 offset between the 360/5.9 dimension and the 5.7 one would not affect the starter engagement adversly. Correct me if I'm wrong here, folks! (Like I need to ask!! )

[dodgeman360]

So I don't have to worry about center line alignment? Or do you think I should check it anyway? Thanks for the converter info.

[dodger1]

Assuming the engine has not had the main bearing bores line-bored, I don't see the need to worry about that, but I guess it would be cheap insurance to check it anyway. Note I used the word "guess"!!

[keith mopar]

Frank Racing Inc. in Houston, TX, specializes in putting HEMI's into other body lines. They also do Hi Po parts for LX, and trucks for 5.7 & 6.1 Hemis. I'm not sure of a contact for them, but a lot of guys on the LX Forums have lots of good things to say about them.

[dtedler]

Mopar Performance has everything you need including a flywheel for the conversion to Manual. Classic Mopar 5 speed has an aluminum bell housing that converts to the Tremec 5 speed. The electronics are available in conversion kit form from Mopar Performance.

Personally, the amount of work that went into the Duster installation with the 518 automatic is way beyond most folks. The cutting of the torsion bar mount requires a ton of fabrication, which the article did not show. The D100 may have a large enough tunnel for the install?

Anyway..Mopar Performance has alot of the issues covered. 1-888-528-HEMI
There is a publication that was sent to the dealers regarding all the part number for the 3G Hemi installs.

As far as the ring gear mis-alignment. I'm varifying this now. I'll get back to you. Hint! Hint!

[pcrmike]

I have done the 518 swap on trucks for years and there is plenty of clearance for hte tranny. The driveshaft needs minor mods in length, or the driveshaft from a newer model, but the crossmember is hte main thing. :-)PCRMike

[dtedler]

The mis-alignment has to do with the crank shaft end...note the end of the crank the flex plate or the flywheel bolts to the block face the bellhousing or automatic transmission bolts to. Simply put the new Hemi's crank is shorter. 1/16" (.060) is not much is general terms but when the ring gear is 3/8" wide every bit of misalignment hurts. I'm going through the exercise to verify the amount of the offset for myself and will be fabricating the "spacer" to position the starter in the correct position to ensure maximum ring gear life on manual applications.

I know of folks that feel it's ok and they are running with it with no problems.

[dodger1]

dtedler, thanks for confirming the mismatch area.

[dodgeman360]

Info's great guys keep it coming. One more question, Without going to the cable throttle body and $2000 computer how would I get the kick down tv cable for the 500 to work. I planned on useing factory emc and throttle body witch came out of a 2005 ram. with manual tranny. I have an a500 from a 94 that was built to handle a well built 360 but I lost a cam bearing and cracked one tof the heads. I got the hemi dirt cheap so I though why not rather than rebuild again.