• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

89 Notch Doing The Tko 600 Swap

  • Thread starter Thread starter flyingtexan
  • Start date Start date May 27, 2013
F

flyingtexan

Member
Dec 25, 2004
57
0
6
Washington Twp, Michigan
May 27, 2013
#1
  • May 27, 2013
  • #1
Pulling the old motor on my Road Racer, out with the 5.0 in with the 347. So I'm fairly sure I have a Tremec 3550 or 3650 tranny in it now (too lazy to go outside and look) I know it's not a T-5. With third gear going grind grind when she's cold, I figured with the engine swap it's time for the better transmission.
My question is since it's a 3550 or 3650 in it now, do I need to buy anything else or is this a bolt in deal?
Can I pull and install the motor and tranny hooked together or would it be better to separate them?
What experience does anyone have with the Road Race TKO and would I regret it over the standard TKO as far as gear ratios? I may go with the 500 for the better ratios.
How critical is indexing and what is it?
 

lxman

Member
Nov 5, 2010
279
16
19
Avondale, AZ
May 27, 2013
#2
  • May 27, 2013
  • #2
What gears are you running? This will determine whether you need the to 500 or 600! If you are running 2.73 to 3.55 you need the 500. If you are running 3.55 an lower gears to like 4.10 then you need the 600. That way you will have the right setup for your car. I used to sell the tko's all the time. If you do have a 3550 it will be a direct bolt in for you. The 3650 is what is in the 99-04 mustangs. I guarantee you that you do not have one of those in your car cuz they only bolt up to the 4.6!

I would install the motor first then the tranny. That's my opinion but I have seen people do both. Just less of a headache doing motor first then tranny. If you are racing I would get the speed and strength kit for it. It replaces the stock brass synchros it carbon fiber lined brass synchros and replaces the stock plastic shift keys with brass ones. This seriously beefs up the tranny even more. After this upgrade you will need to run gm synchro mesh oil cuatros of the carbon fiber lined synchros.

Take your time installing it. Check your clearances and back lash, everything. They can be tempormental sometimes with growling noise coming from gear box if not installed correctly.i Jose this helps you.
 

02 281 GT

Agreed...My wife has great Boobs
15 Year Member
Feb 3, 2009
3,208
1,972
194
Cabot, AR
May 27, 2013
#3
  • May 27, 2013
  • #3
Here's how you index a bellhousing.

View: http://www.youtube.com/watch?v=3sTdTBq6-EI
 

lxman

Member
Nov 5, 2010
279
16
19
Avondale, AZ
May 27, 2013
#4
  • May 27, 2013
  • #4
That's a good video I like that.
 
F

flyingtexan

Member
Dec 25, 2004
57
0
6
Washington Twp, Michigan
May 27, 2013
#5
  • May 27, 2013
  • #5
lxman said:
What gears are you running? This will determine whether you need the to 500 or 600! If you are running 2.73 to 3.55 you need the 500. If you are running 3.55 an lower gears to like 4.10 then you need the 600. That way you will have the right setup for your car. I used to sell the tko's all the time. If you do have a 3550 it will be a direct bolt in for you. The 3650 is what is in the 99-04 mustangs. I guarantee you that you do not have one of those in your car cuz they only bolt up to the 4.6!

I would install the motor first then the tranny. That's my opinion but I have seen people do both. Just less of a headache doing motor first then tranny. If you are racing I would get the speed and strength kit for it. It replaces the stock brass synchros it carbon fiber lined brass synchros and replaces the stock plastic shift keys with brass ones. This seriously beefs up the tranny even more. After this upgrade you will need to run gm synchro mesh oil cuatros of the carbon fiber lined synchros.

Take your time installing it. Check your clearances and back lash, everything. They can be tempormental sometimes with growling noise coming from gear box if not installed correctly.i Jose this helps you.
Click to expand...

Thanks, super helpful.
 
F

flyingtexan

Member
Dec 25, 2004
57
0
6
Washington Twp, Michigan
May 27, 2013
#6
  • May 27, 2013
  • #6
02 281 GT said:
Here's how you index a bellhousing.

View: View: http://www.youtube.com/watch?v=3sTdTBq6-EI
Click to expand...

Thanks for the video
 

lxman

Member
Nov 5, 2010
279
16
19
Avondale, AZ
May 27, 2013
#7
  • May 27, 2013
  • #7
No problem you can pm me if you have anymore questions or whatever.
 
You must log in or register to reply here.

Similar threads

J
Help Figuring Motor Choice(Possible future turbo)?
  • jaygee15
  • Dec 14, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
13
Views
625
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 3, 2026
Jarhead67
J
89 LX Electrical Troubles
  • fun331
  • Oct 25, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
5
Views
350
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 27, 2025
fun331
J
2004 Mustang 3.8L V6 vibrations above 65 MPH and differential leaks
  • joeybuddy96
  • Mar 16, 2026
  • SN95 V6 Mustang Tech
Replies
16
Views
542
SN95 V6 Mustang Tech Tuesday at 2:38 PM
joeybuddy96
J
uh oh that sounds like $$$$$
  • *HOOFHEARTED*
  • Jan 17, 2025
  • 1994 - 1995 Specific Tech
Replies
2
Views
253
1994 - 1995 Specific Tech Jan 18, 2025
*HOOFHEARTED*
S
Upgrade Advice on an 89 GT Convertible NJ
  • SteakDad
  • Apr 17, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
869
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 18, 2025
limp
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?