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Old 10-15-2011, 05:08 PM   #1
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Tremec 5spd or C4

Need opinions. I really like having the 5 speed but I hear having an automatic is much better when drag racing also I plan on running nitrous with the automatic I know there is less room for error and would be able to spray right off the line. What do you think?
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Old 10-15-2011, 05:27 PM   #2
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Is it an all out drag car? IMO a stick is better for a stock or bolt on type motor.but when you start getting faster like 12s or better an auto is the way to go.everytime you shift you lose a little time/momentum.you also gotta way the amount of highway driving you'll be doing because your mpgs will suffer with a non auto.
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Old 10-15-2011, 05:51 PM   #3
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Re: Tremec 5spd or C4

If you will be driving it on the street you don't want the C4. They are not street friendly from what I have been told.

Auto's are better for drag racing cs they are more consistent. No shifting the computer does it all for you. Plus you can't shift faster then that dialed in tranny.
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Old 10-15-2011, 05:55 PM   #4
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Quote:
Originally Posted by wnt2gofst
If you will be driving it on the street you don't want the C4. They are not street friendly from what I have been told.

Auto's are better for drag racing cs they are more consistent. No shifting the computer does it all for you. Plus you can't shift faster then that dialed in tranny.
Agreed,but I do believe a bone stock 5.0 is faster in manual.
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Old 10-15-2011, 05:58 PM   #5
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I have a 351w bored .30 over carbed. It will mostly see only the street, but on occasion see the drag strip. Most likely it will be in the low 12s on motor
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Old 10-15-2011, 05:59 PM   #6
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Quote:
Originally Posted by wnt2gofst
If you will be driving it on the street you don't want the C4. They are not street friendly from what I have been told.

Auto's are better for drag racing cs they are more consistent. No shifting the computer does it all for you. Plus you can't shift faster then that dialed in tranny.
+1,The only way a c4 is close to street friendly is with 2.73 or 3.08 gear ratios.
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Old 10-15-2011, 06:00 PM   #7
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Quote:
Originally Posted by 93slowstang

+1,The only way a c4 is close to street friendly is with 2.73 or 3.08 gear ratios.
Are you just referring to mpgs?
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Old 10-15-2011, 06:01 PM   #8
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I would say aod.if you already have a t5 I would stick with it,like I said unless your are getting real serious.
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Old 10-15-2011, 06:02 PM   #9
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Quote:
Originally Posted by 93slowstang

+1,The only way a c4 is close to street friendly is with 2.73 or 3.08 gear ratios.
Are you referring to gas mileage when you say street friendly?
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Old 10-15-2011, 06:09 PM   #10
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Quote:
Originally Posted by 351mustang

Are you referring to gas mileage when you say street friendly?
Yes
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Old 10-16-2011, 08:07 AM   #11
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C4 is a three speed right.. So it will be turning it's *** off at highway speeds. If ease of use and MPG are a concern street/strip AOD's are better then ever now. I actually choose an auto as I drive 80 miles round trip to work. Tired of changing gears in a D/D.
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Old 10-16-2011, 09:56 AM   #12
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Re: Tremec 5spd or C4

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Originally Posted by dreamstang View Post
Agreed,but I do believe a bone stock 5.0 is faster in manual.
Yes stock. That is because the stock convertor can not leave like a aftermarket one. Say a 3500 stall or so.

Not only is a c4 going to suck in gas mileage but also look at the gears in a C4. You will be revving the **** out it all the time. Plus if doing an auto get a 3000 stall at least.


My car is different but to do over again I would go auto with a 4000 stall.
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Old 10-16-2011, 10:27 AM   #13
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Originally Posted by wnt2gofst

Yes stock. That is because the stock convertor can not leave like a aftermarket one. Say a 3500 stall or so.

Not only is a c4 going to suck in gas mileage but also look at the gears in a C4. You will be revving the **** out it all the time. Plus if doing an auto get a 3000 stall at least.

My car is different but to do over again I would go auto with a 4000 stall.
Over 3000 is a lot if its a d/d.and yes a c4 is only a good trans for hard drag racing.they are very stought but not good for d/d
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Old 10-16-2011, 11:31 AM   #14
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Well it's not a daily driver. So just looking for gains to switching because I am partial to the 5 spd just like the feeling of control lol
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Old 10-16-2011, 11:49 AM   #15
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Originally Posted by 351mustang
Well it's not a daily driver. So just looking for gains to switching because I am partial to the 5 spd just like the feeling of control lol
IMO if you like the 5 speed stick with it.I have seen 10second mustangs running 5 speeds.like I said earlier unless your stang is really fast or your dragging a lot I wouldn't sweat it.
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Old 10-16-2011, 11:55 AM   #16
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Quote:
Originally Posted by deadsp0t
C4 is a three speed right.. So it will be turning it's *** off at highway speeds. If ease of use and MPG are a concern street/strip AOD's are better then ever now. I actually choose an auto as I drive 80 miles round trip to work. Tired of changing gears in a D/D.
Three speed yes, but third gear is 1:1 ratio. Right now in 4th gear (1:1) in my car I'm turning 2000 rpm at 70mph. It's not as bad as its made out to be.
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Old 10-16-2011, 11:58 AM   #17
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Well there is also a question if I may blow the trans up? The motor is suppose to turn a lot if torque. What are some upgrade rebuild kits for a tremec 5 spd
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Old 10-16-2011, 12:22 PM   #18
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Quote:
Originally Posted by 351mustang
Well there is also a question if I may blow the trans up? The motor is suppose to turn a lot if torque. What are some upgrade rebuild kits for a tremec 5 spd
The only upgrade I can think of is the HD t-5.
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Old 10-16-2011, 12:26 PM   #19
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I'd spend the dough on a TKO 600.. Is that right?? @ slowstang.
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Old 10-16-2011, 01:06 PM   #20
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Quote:
Originally Posted by deadsp0t
I'd spend the dough on a TKO 600.. Is that right?? @ slowstang.
That or the tko 500.
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Old 10-16-2011, 02:25 PM   #21
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I always thought a tremec was the tko? Isn't there a difference between a t5 and tremec 5spd? I did a quick google search and found that there is can anyone confirm?
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Old 10-16-2011, 02:28 PM   #22
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Quote:
Originally Posted by 351mustang
I always thought a tremec was the tko? Isn't there a difference between a t5 and tremec 5spd?
No, tremec bought out Borg Warner. My transmission is a tremec hd t5 with the Borg Warner case.
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Old 10-16-2011, 02:34 PM   #23
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Ya they make the standard t5, and the TKO trannies each a step up. Want a bullet proof t5 get a GForce t5..

---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------

Lol our answers are the same but diff
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Old 10-16-2011, 02:37 PM   #24
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Quote:
Originally Posted by deadsp0t
Ya they make the standard t5, and the TKO trannies each a step up. Want a bullet proof t5 get a GForce t5..

---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------

Lol our answers are the same but diff
Lol, the gforce is rated the same as the tko 500, but I wonder how much heavier it is over the stock t5. I know the tko is a good bit heavier.
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Old 10-16-2011, 02:42 PM   #25
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Good Q.. I had a 3550 Tremec. Felt notchy no where as friendly as a t5, but with the GForce treatment it may not be user friendly either. Do the Tremec's build the same way as GForce? Dog rings? Straight cut gears??
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Old 10-16-2011, 02:52 PM   #26
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Quote:
Originally Posted by deadsp0t
Good Q.. I had a 3550 Tremec. Felt notchy no where as friendly as a t5, but with the GForce treatment it may not be user friendly either. Do the Tremec's build the same way as GForce? Dog rings? Straight cut gears??
I know tremec changes dog rings and a few other select pieces, but no where near to the extent of gforce.
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Old 10-16-2011, 04:42 PM   #27
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Re: Tremec 5spd or C4

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Over 3000 is a lot if its a d/d.and yes a c4 is only a good trans for hard drag racing.they are very stought but not good for d/d
I know guys that DD on 3200-4500 stalls every day. One buddy has a 4200 stall and 4.30 gears.

Some say same thing with certain power levels. But I know guys that DD 1000whp cars.
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Old 10-16-2011, 05:21 PM   #28
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Originally Posted by wnt2gofst

I know guys that DD on 3200-4500 stalls every day. One buddy has a 4200 stall and 4.30 gears.

Some say same thing with certain power levels. But I know guys that DD 1000whp cars.
I'm not saying it can't be done.for normal driving its just not the best thing.unless you plan on launching hard everytime you leave a stop sign its just not best.at low rpms your gonna slip a lot .
Ps I wish my d/d was 1000 hp

---------- Post added at 05:21 PM ---------- Previous post was at 05:18 PM ----------

A stock motor redlines around 5500 and quites making power at 5200.if you have a 4000 stall your only gonna be using 1000 - 2000 of your rpm range.
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Old 10-16-2011, 05:29 PM   #29
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Re: Tremec 5spd or C4

From reading through this thread I'd say you should stick with your manual transmission.
Auto transmissions are great, but they also cost you some HP and build a lot of heat, especially if you are running a stall convertor.
I've owned both in various configurations from mild to wild and the manual trannies always held up the best and lasted the longest.

As for shifting speed when drag racing, there are air shifted manual transmission set ups that can shift just as fast as any automatic, maybe faster because air is quicker reacting than fluid.

Switching to an auto is going to be costly and from what you've written I don't think you will like it.
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Old 10-16-2011, 05:31 PM   #30
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From reading through this thread I'd say you should stick with your manual transmission.
Auto transmissions are great, but they also cost you some HP and build a lot of heat, especially if you are running a stall convertor.
I've owned both in various configurations from mild to wild and the manual trannies always held up the best and lasted the longest.

As for shifting speed when drag racing, there are air shifted manual transmission set ups that can shift just as fast as any automatic, maybe faster because air is quicker reacting than fluid.

Switching to an auto is going to be costly and from what you've written I don't think you will like it.
+1 stick with it.specialy if that's what you like
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Old 10-16-2011, 06:21 PM   #31
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Quote:
Originally Posted by Trojan Horse
From reading through this thread I'd say you should stick with your manual transmission.
Auto transmissions are great, but they also cost you some HP and build a lot of heat, especially if you are running a stall convertor.
I've owned both in various configurations from mild to wild and the manual trannies always held up the best and lasted the longest.

As for shifting speed when drag racing, there are air shifted manual transmission set ups that can shift just as fast as any automatic, maybe faster because air is quicker reacting than fluid.

Switching to an auto is going to be costly and from what you've written I don't think you will like it.
Thanks I'll probably stick with the manual. ( no pun intended). See how I like it, never really driven a powerful car with a manual
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Old 10-16-2011, 06:33 PM   #32
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Is it an all out drag car? IMO a stick is better for a stock or bolt on type motor.but when you start getting faster like 12s or better an auto is the way to go.everytime you shift you lose a little time/momentum.you also gotta way the amount of highway driving you'll be doing because your mpgs will suffer with a non auto.
Meant non overdrive.

---------- Post added at 06:33 PM ---------- Previous post was at 06:32 PM ----------

I love having a stick.nothing like ramming through the gears
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Old 10-16-2011, 08:38 PM   #33
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Re: Tremec 5spd or C4

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Thanks I'll probably stick with the manual. ( no pun intended). See how I like it, never really driven a powerful car with a manual
You'll love it.
Plus, with the manual tranny and clutch you can have whatever "stall" speed you want.
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