s197 auto tranny?

Reply Subscribe

Thread Tools

Search this Thread

11-27-2009, 06:52 AM

#21

archangel76

Join Date: Aug 2009

Location: FL

Posts: 10

Source?

Quote:

Originally Posted by SirKnightTG

It's actually 550 ft/lbs, hence the 55 in the name - but that's AFTER torque multiplication of the TC. If your engine makes that much, you'll be going way over the rating.

Here's what 5R55S stands for: 5R55S (5speed, Rear drive 550 tq rating multiplied @ converter) Short ratio

Where did you find this info? I've seen other posts with this quote...no one seems to have a Ford source in terms of actual technical documentation.

11-27-2009, 09:34 AM

#22

antonio1988

4th Gear Member

Join Date: Jul 2008

Location: Miami

Posts: 1,175

You should be fine... I was actually told by the guys at Brenspeed that the weakest part of our auto tranny's is in actuality the 3rd gear synchros and the torque converter, which I have already swapped

11-28-2009, 02:14 PM

#23

kidnizmo

2nd Gear Member

Join Date: Nov 2008

Location: NJ

Posts: 219

Quote:

Originally Posted by antonio1988

3rd gear syncros and converter...really? did you swap the syncro with an upgraded part or just a new part from ford.

11-30-2009, 09:26 AM

#24

zkiller

4th Gear Member

Join Date: Feb 2007

Location: Illinois

Posts: 1,726

There is no synchro gear for 3rd in a 5R55S. It uses a servo not a synchro.
I'm betting he just upgraded the converter.
I have upgraded servos (billett) installed from Level 10 in my transmission.
Synchro gears are used in manual trannies.

11-30-2009, 10:18 AM

#25

Simon1

5th Gear Member

Join Date: Dec 2006

Location: Redding, CA

Posts: 4,552

Hey Zkiller,
After you upgraded the internal weak spots and I assume the input shaft as well, how has the transmission functioned? Does it change drivability at all? What is the stall on your transmission? I'm curious to know since I may switch over to an auto eventually and will either put in a 5R55S or a 4R70W.

I know the 4r70 can be built to hold 1000 hp, you can put a trans brake in it, reverse manual or just have it shift itself. It all depends on how it's built from what I've heard.

04-09-2010, 09:53 PM

#26

cfr865

3rd Gear Member

Join Date: Apr 2005

Location:

Posts: 602

Quote:

Originally Posted by Simon1

I would also like to know the answer.

04-10-2010, 07:21 AM

#27

liberty911

2nd Gear Member

Join Date: Dec 2009

Location: Florida

Posts: 198

Quote:

Originally Posted by wildazme

anyone know a place where i can get a catch can for the tranny other then jdm because 150 seems a lil expensive for a can and some hose.

I used the Moroso catch can with breather from Summit. After all is said and done you'll be around $110 (can, fittings, hose, clamps). If I did it over again I'd just get the JDM. It's a nice piece and you get what you pay for. To the OP, I would suggest a JDM tune specifically because they run some very fast Stangs with the stock trans and they seem hold up fine.

Plenty of stock motor stangs have the stock at go as well as FI cars. Its a crap shoot. You have to pay to play!