Torque Converter Question

[mgmsleeper]

Changing out my torque converter and just trying to get a general idea of which way to go. i know the stock TC in my 99MGM is equivalent to a go-kart but should i go with a MM TC or one even better? any advice would be appreciated.

*im not SC or Turbo so no major major mods*

..thanks

[JohnE]

Picking a TC is like choosing proper cams. You have to give up from one area to gain in another. Additionally if you change the stall speed, it would be best to modify the shift/lock schedule for the trans (meaning a tune). If you have the HPP or Sport package, then you'll have a 11.25" converter. The Marauder also has a 11.25" converter, but higher stall speed. If you don't have the 11.25" already, you also have to change the flex plate.


In order to get a higher stall, you loose power to the ground at low throttle positions. Basically you need more engine rpms to get the car to move. This has a direct negative impact on fuel economy. Of course this does allow more power to the wheels by putting the engine at higher rpms (more hp) to get you moving.




John

[Darrin]

A stock 04 Marauder converter would be an upgrade. But, as mentioned, you will need a flexplate so that you can use it. Fuel economy won't be affected much with that one, nor will daily driving feel.

But let's start at the beginning. What is the reason for switching torque converters?

Darrin

[mgmsleeper]

Picking a TC is like choosing proper cams. You have to give up from one area to gain in another. Additionally if you change the stall speed, it would be best to modify the shift/lock schedule for the trans (meaning a tune). If you have the HPP or Sport package, then you'll have a 11.25" converter. The Marauder also has a 11.25" converter, but higher stall speed. If you don't have the 11.25" already, you also have to change the flex plate.


In order to get a higher stall, you loose power to the ground at low throttle positions. Basically you need more engine rpms to get the car to move. This has a direct negative impact on fuel economy. Of course this does allow more power to the wheels by putting the engine at higher rpms (more hp) to get you moving.




John

car is already Tuned..was done by Reinhart

[fastblackmerc]

You want to give these guys a call.

http://www.converter.com/

[mgmsleeper]

A stock 04 Marauder converter would be an upgrade. But, as mentioned, you will need a flexplate so that you can use it. Fuel economy won't be affected much with that one, nor will daily driving feel.

But let's start at the beginning. What is the reason for switching torque converters?

Darrin

well as mentioned its TC is stock. car has already been tuned but the TC isnt giving me nothing. with the tune its shifting pretty high but with the stock TC its pretty much useless right. i have the gears awaiting install which are 373 or 410 i believe Reinhart said.

[fastblackmerc]

well as mentioned its TC is stock. car has already been tuned but the TC isnt giving me nothing. with the tune its shifting pretty high but with the stock TC its pretty much useless right. i have the gears awaiting install which are 373 or 410 i believe Reinhart said.

Most likely them are 4.10's. 3.73's wouldn't be much improvement over the stock 3.55's.

[mgmsleeper]

Most likely them are 4.10's. 3.73's wouldn't be much improvement over the stock 3.55's.

so going from stock MGM torque conv to MM tc. would it be an impprovement? or just go ahead on the gears install with the stock tc

[Blackened300a]

so going from stock MGM torque conv to MM tc. would it be an impprovement? or just go ahead on the gears install with the stock tc

The gears are a nice improvment. I think it was mentioned before that their is no difference between the 03 and 04 MM convertor stall. So either one may be a improvement.

BTW, whats the stock ratio in your MGM?

[mgmsleeper]

The gears are a nice improvment. I think it was mentioned before that their is no difference between the 03 and 04 MM convertor stall. So either one may be a improvement.

BTW, whats the stock ratio in your MGM?

327 i believe

[mgmsleeper]

First Gear Ratio (:1) 2.84 Second Gear Ratio (:1) 1.56 Third Gear Ratio (:1) 1.00 Fourth Gear Rato (:1) 0.70 Reverse Ratio (:1) 2.32 Final Drive Axle Ratio (:1) 2.73

[Blackened300a]

Ok, So even a jump to our stock 3.55 would be a big difference in that car.

Do the gears first, That is the easiest and cheapest. You'll no doubt feel a big improvement over what you have now.

[mgmsleeper]

Ok, So even a jump to our stock 3.55 would be a big difference in that car.

Do the gears first, That is the easiest and cheapest. You'll no doubt feel a big improvement over what you have now.

but just as i thought u said 373's wouldnt be a difference so wats the difference in 355's over 410

[Blackened300a]

but just as i thought u said 373's wouldnt be a difference so wats the difference in 355's over 410

In a Marauder its about .2 tenths in the 1/4 mile and better overall drivability. He was assuming you had a Marauder with the stock 3.55 ratio. To go from 3.55 to 3.73 is a waste.

[larryo340]

Ok, So even a jump to our stock 3.55 would be a big difference in that car.

Do the gears first, That is the easiest and cheapest. You'll no doubt feel a big improvement over what you have now.

^^^^^+1

mgmsleeper
It all depends what else you plan to put into the car. Take it from me I know what 2.73's feel like, but I wouldn't put more than 3.55's unless you are going to a bigger rim and taller tire. Marauders have a much taller tire that our stock MGM's so effictively 3.55's are pretty steep with them.

[mgmsleeper]

^^^^^+1

mgmsleeper
It all depends what else you plan to put into the car. Take it from me I know what 2.73's feel like, but I wouldn't put more than 3.55's unless you are going to a bigger rim and taller tire. Marauders have a much taller tire that our stock MGM's so effictively 3.55's are pretty steep with them.

MM wheels are awaiting install. with a possible taller wider rear tire due to lack of OEM's also mite run a 9.5 rear tire so should i go 410?

[Darrin]

The reason I stated an 04 converter is because of changes they made to that one which make it more durable. The stall is actually the same on all the 11.25in converters from 1993 to current. This car in question has a 12in converter so any of the 11.25in ones would be a stall improvement.

If you want a much more durable converter in pretty much any stall you need just give me a call at 317-514-0816.

Darrin

[Bradley G]

What year car do you have?
The rolled rear fender started with 03s' you prolly need the room for wider tires , You can get that done , if your car is pre '03.
On the gear;
At least 4:10's!
How big(Tall) of a tire do you plan to use?

MM wheels are awaiting install. with a possible taller wider rear tire due to lack of OEM's also mite run a 9.5 rear tire so should i go 410?

[mgmsleeper]

The reason I stated an 04 converter is because of changes they made to that one which make it more durable. The stall is actually the same on all the 11.25in converters from 1993 to current. This car in question has a 12in converter so any of the 11.25in ones would be a stall improvement.

If you want a much more durable converter in pretty much any stall you need just give me a call at 317-514-0816.

Darrin

thanks. will do!
:beer:

[mgmsleeper]

What year car do you have?
The rolled rear fender started with 03s' you prolly need the room for wider tires , You can get that done , if your car is pre '03.
On the gear;
At least 4:10's!
How big(Tall) of a tire do you plan to use?

99MGM and so far i'll be running the OEM size 245/55 but due to the backorders i might run the 255 i believe it is. and ive thought about widening the rear wheels out to 9.5 but its not 100% a sure project yet