• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Which Transmission?

  • Thread starter Thread starter 92LX_Stroker
  • Start date Start date Aug 23, 2006

92LX_Stroker

New Member
Aug 3, 2006
22
0
0
Where ever the Army puts me
Aug 23, 2006
#1
  • Aug 23, 2006
  • #1
I have a 347 with a C4 currently for my 67. I would prefer a stick shift set up. Any recomendations on what to go with? Its a daily driver, might see the strip once for a time.
 
1

1966conv

New Member
Mar 5, 2004
220
0
0
Aug 23, 2006
#2
  • Aug 23, 2006
  • #2
What gear ratio are you running?

Guessing that the 347 makes at least 350 RWHP @ 20% parasitic loss = appx 430 FWHP.(YMMV) You should either run a TKO 500/600 or a toploader if you want manual. A five speed gives you the best of both worlds, but the toploader is more vintage.
 

92LX_Stroker

New Member
Aug 3, 2006
22
0
0
Where ever the Army puts me
Aug 23, 2006
#3
  • Aug 23, 2006
  • #3
Currently I dont know what is in the pumpkin, but when I get to it, 3.73
 

67Dylan

New Member
May 11, 2006
259
0
0
Phoenix, AZ
Aug 23, 2006
#4
  • Aug 23, 2006
  • #4
Either the Tremec TKO, or if you want a 6-spd the T-56. Either one will handle the power you have and should make you happy IMO.
 

92LX_Stroker

New Member
Aug 3, 2006
22
0
0
Where ever the Army puts me
Aug 24, 2006
#5
  • Aug 24, 2006
  • #5
What about a T-5 from a late model mustang? are those worth it to rebuild?
 

67Dylan

New Member
May 11, 2006
259
0
0
Phoenix, AZ
Aug 24, 2006
#6
  • Aug 24, 2006
  • #6
92LX_Stroker said:
What about a T-5 from a late model mustang? are those worth it to rebuild?
Click to expand...

I've seen a few t-5'S behind nitrous'd motors running in the 10's last a full season, BUT I'd never do that. Depending on how you drive it and how much power, they will/could give up and you'll end up either upgrading or rebuilding. What would suck is if you got on it and it grenaded... IMO buy the tremec now and you'll always be confident.
 
5

57fairlane

New Member
Apr 2, 2005
560
0
0
Oakwood, GA
Aug 24, 2006
#7
  • Aug 24, 2006
  • #7
the TKO or cheaper is a 3550, same case . . .
 

Jester67

Member
Sep 21, 2004
908
1
18
TN
Aug 24, 2006
#8
  • Aug 24, 2006
  • #8
G-Force T5 is the easy rough the T56 will require major Tran’s tunnel work. I just noticed an advertisement in mustangs and ford for a company that clams to have a TKO conversion kit with on cutting but up until now the general consciences is that it too required Trans cutting. Top loader is vintage but with the price of gas and the cost of the conversion little or no, different I would get one with overdrive. And because it will come up the Richmond 6, speed is also a direct bolt in but it is much cash o roma
 
S

SuperSnake428

New Member
Jul 18, 2006
24
0
0
Aug 24, 2006
#9
  • Aug 24, 2006
  • #9
My Vote

TKO 600.. hands down
 
S

Sicarius428

Active Member
Jan 6, 2004
2,085
5
49
Aug 24, 2006
#10
  • Aug 24, 2006
  • #10
TKO 600 or 500. My T5 didn't hold up to my 302... I don't think your 347 would be to kind to it too. The TKO500 has a shorter first and second. Since you probably aren't lacking any torque and with 3.73 in the future the TKO600 would be a better choice IMO.
Kevin
 

67Dylan

New Member
May 11, 2006
259
0
0
Phoenix, AZ
Aug 24, 2006
#11
  • Aug 24, 2006
  • #11
Just an FYI, the 3550 is no longer made. The TKO has replaced it, but you could find some used ones or maybe a few dealers still have some... I dunno.

How about the liberty T-5? http://www.libertysgears.com/proshift.htm
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Aug 24, 2006
#12
  • Aug 24, 2006
  • #12
Depending on where, how far and how fast you drive and your engine's powerband, the Toploader could very well equal an overdrive transmission in fuel mileage. Sometimes dropping the rpms lower than the powerband of the engine will result in less fuel mileage, not more. My 331-sixpack in my 89 Ranger with a 3.55 rear gear (that's what the actual gear/tire combo works out to in a Stang with 26" tires) and it's Toploader 4 speed would pull down 16 mpg, if you kept your right foot disapplined in highway driving and cruising at 60-70 mph. The rpms at that speed ranged from 2687-3100 rpms.
 

Shakin66

Founding Member
Jan 19, 2001
628
1
19
Waycross, Ga / Lake James, NC
Aug 25, 2006
#13
  • Aug 25, 2006
  • #13
My vote...
T-56
But I got mine cheap and was willing to refab the tunnel.
 
You must log in or register to reply here.

Similar threads

J
Rear alignment issues
  • Jayjay001
  • May 27, 2026
  • 2015 - 2023 (S550) Mustang -General/Talk
Replies
1
Views
92
2015 - 2023 (S550) Mustang -General/Talk May 27, 2026
Noobz347
D
1982 inline 6 needing help on transmission identification
  • Death_the_end
  • Sep 6, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
1
Views
122
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Sep 7, 2025
General karthief
Considering widening my rear wheels, would like to verify my thoughts on fitment
  • 2000xp8
  • Jul 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 2
Replies
25
Views
508
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Thursday at 5:49 PM
85GT4V
9
Will I feel a difference
  • 90Stanger302
  • Mar 12, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
5
Views
266
1965 - 1973 Classic Mustangs -General/Talk- Apr 13, 2026
Noobz347
C
New mustang owner
  • CPH89LX
  • Apr 26, 2026
  • The Welcome Wagon
Replies
3
Views
138
The Welcome Wagon Apr 27, 2026
91AOD5.0LX
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?