727 on a magnum 360

-
E

Eric Mulay

Well-Known Member
Joined
Dec 23, 2019
Messages
46
Reaction score
3
Location
san luis obispo california
i am putting a 727 on my 1995 magnum engine.
I understand I can use the stock flex plate and make one hole a little bigger, my question is..

what torque converter,
keep seeing a " neutral " weighted converter, ? what is a neutral weighted converter?
some say get a non weighted converted, some say this neutral thing?
my transmission builder says it needs a 91 gram weighted 130 tooth converter..

if someone could help me out on this..
what is correct..?
thanks
 
Use the Magnum flexplate and a neutral converter.
A weighted converter has weights on it to balance the crankshaft on an external balance engine.
The weights your Magnum needs are on the flex plate.
Or, you could have a custom converter made that has the Magnum weights on it and use a standard unweighted flexplate.
 
Neutral and non weighted are the same thing. A new neutral, non weighted, internal, zero balance converter.
(they all mean the same thing)
 
motorpirate said:
Use the Magnum flexplate and a neutral converter.
A weighted converter has weights on it to balance the crankshaft on an external balance engine.
The weights your Magnum needs are on the flex plate.
Or, you could have a custom converter made that has the Magnum weights on it and use a standard unweighted flexplate.
Click to expand...


Have you done this?
 
Eric Mulay said:
So you are 100% sure.. That i put a non weighted converter on this?

Because his book says a 95 dodge 1500 has a 91 gram weighted converter
Click to expand...

if you use a non weighted converter,,,,you need a weighted magnum flexplate
 
if you use a weighted converter....you need a non weight flexplate.....get the picture.....weights on one or the other......not both....and not un weighted....
 
70aarcuda said:
if you use a non weighted converter,,,,you need a weighted magnum flexplate
Click to expand...

This still does not answer the question.
Why does the book.. Say.... Use 91 gram weighted. With the weighted flex plate?
According to the book.. All of you are wrong

So..... Has anyone here actually done it?
 
Eric Mulay said:
And you used the no weight converter..
And it works..
No vibration ?
Click to expand...

The early magnum 5.9 engine had a "neutral" flexplate like the 5.2 engines. The weight WAS on the converter in 1994, 1995, and a 1996 that I have personally worked on.

Sometime in 1996 or so the weight got moved to the flexplate and the converter was then "neutral" balanced.

So you need a weighted 5.9 magnum flexplate. Get one from a late 96-02 5.9. My local parts store had one in stock for under $50. Then you will need a neutral balance 727 converter to go with it. I had an LA 360 converter that I had knocked the weight off of to use on my magnum swap.

Also remember that LA 360 and a magnum 360 do not use the same weights!
 
To confuse you even more...... any quality neutral balance converter should have been balanced to zero, and may have small balance weights on it, but not the large external balance weights.
 
Eric Mulay said:
Have you done this?
Click to expand...

Eric Mulay said:
And you used the no weight converter..
And it works..
No vibration ?
Click to expand...

I put my setup together using 1996 5.9 Magnum, factory weighted flex plate and neutral converter.
It really doesn't matter which way you go.
Either the flex plate or the converter needs to be weighted for the Magnum motor, but it's cheaper to use the factory balanced plate and neutral converter because they already make the parts that way. (meaning you don't need custom stuff)
 
You must log in or register to reply here.
-

Back
Top