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

T-5 to C-4 when turbo is done?

  • Thread starter Thread starter Black Stampede
  • Start date Start date Sep 14, 2006

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 14, 2006
#1
  • Sep 14, 2006
  • #1
Guys, my single turbo setup is well on its way to completion and with that is going to come plenty of power to destroy my T-5. My buddy (rio95) with the same diy turbo setup blew his already and his clutch (King cobra) which is the same as I have is already having issues with holding. With this in mind, next spring I know my clutch will be gone and I'm not gonna throw a strong clutch on a t-5 since it will kill it, therefore I need a tranny too.

Well, we are both tossing around the idea of getting C-4s due to the fact that they are cheaper, wouldnt have to worry bout clutches, and the main reason is that there really don't seem to be that many great manual options. All the people we know with Tremecs complain about them not always going into gear great and other small issues, which for what they cost should never be happening. As for a g-force, I dont think it would be strong enough for our long term plans so the only other option is a t-56 which is very expensive. So for these reasons we are both comtemplating autos, which we both enjoys driving manuals alot and would miss it but this is why we are thinking autos.

Just the other day a buddy of mine said his dad has a built c-4 sitting around that he would sell for $550 that has 1,000 miles on it and no track time. That sounds quite tempting. Let me know what you guys think. Thanks.
 
Y

yellow1995Cobra

New Member
Dec 23, 2002
2,959
2
0
Massachusetts
Sep 14, 2006
#2
  • Sep 14, 2006
  • #2
I wouldnt. You drive the car for fun on the street? A friend of mine has one, and damn its so annoying to ride in his car, expecially with the high torque converter.

My tip to you, find someone who has one in their car (doesnt matter what kind of car) and be sure to go for a ride, if you can deal with crappy cruising rpms (highway), notchyness, and convertor then go for it.

Otherwise go with a tko600 or gforce. I havent heard anyone having issues with the gforce trannies yet, ill probably go that route or the t56 route. The t56 really is the ultimate, but like you said they arent cheap. Best bet is to score one from an ls1 fbody or 03 cobra.
 

94_302

Founding Member
Sep 2, 2002
438
0
16
Miami
Sep 14, 2006
#3
  • Sep 14, 2006
  • #3
Why not look for a 4r70?
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 14, 2006
#4
  • Sep 14, 2006
  • #4
Yeah, after talking to a buddy today, the g-force is sounding better. I realize the manual would definitely be more fun. Hard decision.
 

Redsnk95

Founding Member
Feb 3, 2002
2,243
1
0
Houston, TX
Sep 14, 2006
#5
  • Sep 14, 2006
  • #5
Just depends on what you want. The automatic is going to be faster with the turbo. I love my C4 but I rarely drive on the street. My converter acts like a stock converter on the street but stalls well over 4K. And I still get to shift since I have a manual valvebody...even if I just have to shift twice.
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 15, 2006
#6
  • Sep 15, 2006
  • #6
Yeah the one i could get off my buddies dad can only be manual ****ed as well. I guess its mainly the cost issue to me as I could quite possibly same almost a grand.
 

Therian

The Highlander
Founding Member
Apr 21, 2002
0
1
0
Waterloo, Ontario
Sep 15, 2006
#7
  • Sep 15, 2006
  • #7
gforce...

something about driving a sports car with an automatic transmission isn't good...just my opinion...shifting without a clutch takes all of the fun out of it too. plus a stick with a short shifter just looks sexy.

all my opinion. take it for what it's worth
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 15, 2006
#8
  • Sep 15, 2006
  • #8
Therian said:
gforce...

something about driving a sports car with an automatic transmission isn't good...just my opinion...shifting without a clutch takes all of the fun out of it too. plus a stick with a short shifter just looks sexy.

all my opinion. take it for what it's worth
Click to expand...

Yeah, I really do agree with you. If I stay with a manual i think I will be going the g-force route for strength and price.
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
Sep 15, 2006
#9
  • Sep 15, 2006
  • #9
I have a tremec tko in my car and it shifts fine. Never a problem getting it into gear and never a problem at 6,800 rpm either

I'm looking to swap it for a built up AOD. I wanted a C4 but I go on the highway too much with my car and a C4 with 4.30 gears will be way too much.
 

AznStanger3v

Active Member
Aug 11, 2003
2,026
0
47
Northern VA
Sep 15, 2006
#10
  • Sep 15, 2006
  • #10
id stick with a manual. cars are meant to be experienced. as much as your "e.t.s" will suffer and be less consistent, the world wont end. enjoy shifting, dumping the clutch, just have fun with the bitch.
 

Redsnk95

Founding Member
Feb 3, 2002
2,243
1
0
Houston, TX
Sep 16, 2006
#11
  • Sep 16, 2006
  • #11
I swear if I were to let someone make a pass in my car with the manual C4 they would fall in love...the torque curve is unreal, the transbrake is a blast and shifting without your foot is an acquired taste..lol.
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 16, 2006
#12
  • Sep 16, 2006
  • #12
I think there are alot of positives to both sides. The auto. is attractive because of the price, but the manual would just be more fun. I dunno....
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Sep 16, 2006
#13
  • Sep 16, 2006
  • #13
Grn92lx - So now your at 6,800rpm...LOL...LOL.

A few months ago you were at 6,400 rpm, then a few days ago it was 6,700 rpm...now...it is 6,800 rpm.

You also had "whining" problems with your TKO.

Anyways, back to topic...

Get the G-force, it is stronger than the t56 and weighs virtually the same as a regular t5.

If you can drive the c4 isn't going to be much faster, if at all...and you will miss the fun factor. People will think, "no skill" is needed.
 

4Jenna

Founding Member
Sep 12, 2001
4,326
6
69
AZ
Sep 16, 2006
#14
  • Sep 16, 2006
  • #14
650-700rwtq and up I'd say Auto as you will get tired of smoking clutches and tearing trans up

Track car def Auto

Love banging gears..well thats obvious

I'm sure I'll end up with a Auto one day
 

Redsnk95

Founding Member
Feb 3, 2002
2,243
1
0
Houston, TX
Sep 16, 2006
#15
  • Sep 16, 2006
  • #15
G-Force T5 is good for 600hp maybe 650hp...don't get my wrong I love T5s I almost went back to one. But with the C4 I don't have to worry about clutches or the shock of launching off the clutch at 5K. With the C4 I can focus on other things.

I would go through Walt at ProMotion Transmissions for the T5 build. Do you plan on driving on the street? What kind of RPMs? If you plan on anything more than 6400rpms you will want to upgrade to the dog-ring setup, but at that point it will not be very fun on the street b/c it will whine and not down shift very well.
 

Therian

The Highlander
Founding Member
Apr 21, 2002
0
1
0
Waterloo, Ontario
Sep 16, 2006
#16
  • Sep 16, 2006
  • #16
http://cgi.ebay.com/ebaymotors/6-SP...tegoryZ33733QQihZ017QQitemZ270028203216QQrdZ1

http://cgi.ebay.com/ebaymotors/97-0...tegoryZ33733QQihZ007QQitemZ170029488926QQrdZ1
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 17, 2006
#17
  • Sep 17, 2006
  • #17
Redsnk95 said:
G-Force T5 is good for 600hp maybe 650hp...don't get my wrong I love T5s I almost went back to one. But with the C4 I don't have to worry about clutches or the shock of launching off the clutch at 5K. With the C4 I can focus on other things.

I would go through Walt at ProMotion Transmissions for the T5 build. Do you plan on driving on the street? What kind of RPMs? If you plan on anything more than 6400rpms you will want to upgrade to the dog-ring setup, but at that point it will not be very fun on the street b/c it will whine and not down shift very well.
Click to expand...


It will be driven on the street alot. For now not over 6,000 rpms. As for power, should be making around 500 rwhp and in year or so when I upgrade my block my goal is around 650 rwhp. Currently I am leaning towards the g-force. Would do you think the promotion build would cost?
 

OrangeMustangGt

Founding Member
Mar 7, 2002
1,976
0
36
Cape Cod, MA
Sep 17, 2006
#18
  • Sep 17, 2006
  • #18
i have a question....those t-56's seem to be quite common, especially in f-bodys, used in the jy, etc.

What is needed to make the swap to fit our cars, can you get a kit, etc>?
 

Black Stampede

Founding Member
Sep 3, 2002
1,811
2
39
Grand Rapids, MI
Sep 19, 2006
#19
  • Sep 19, 2006
  • #19
I think there is a kit, someone else could say for sure. From what I've heard though, they dont line up with our shifters. I thought I heard they are like 2 inches off. Someone else chime in.
 
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
649
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jan 3, 2026
Jarhead67
J
H
Forced Induction On3 Turbo Kit- Parts list NEEDED - 302 Stock Motor
  • Hirothecool1
  • Feb 27, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
21
Views
1K
Fox 5.0 Mustang Tech Mar 7, 2026
slow84lx
S
S
Car shakes when taking off help???
  • STANKYstangs
  • May 10, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
12
Views
331
1996 - 2004 SN95 Mustang -General/Talk- May 27, 2026
LILCBRA
Z
Progress Thread zeth194 - New Guy on the Block
  • zeth194
  • Mar 19, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
10
Views
567
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Apr 26, 2026
LILCBRA
Engine Suggestions on an engine rebuild. Stock cam/GT40Ps or aftermarket on both for a fun weekend driver?
  • MadSquirrelTech
  • Apr 28, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
23
Views
819
Fox 5.0 Mustang Tech May 7, 2026
MadSquirrelTech
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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?