GM three speed automatic with brake for SS

Dragsinger · 04-28-2018, 03:10 PM

Racers,

the engine combination I am considering [350/360/325] SBC requires a three speed trans.

Tell me about your experience with trans brake with three speed. It will be in a 3100 pound door car, expected ET 9.70 range

What is a common trans folks are racing for this situation?

Ed Wright · 04-28-2018, 03:31 PM

Larry, I have used a Rossler T350, and a ProTrans, T350. Both work great. ProTrans is a couple hundredths quicker for me.

Jeff Jewell · 04-28-2018, 05:26 PM

I am using a T350 with a brake in my 3100 lb SS/CA Corvette. It's been pretty reliable. Only thing I would change from what I have now is to upgrade to a clean neutral valve body/shifter. It seems all the good transbrake valve bodies for T350s are reverse pattern.

Ed Wright · 04-29-2018, 11:18 AM

Clean Neutral is nice.

ss3011 · 04-29-2018, 01:50 PM

Kilgore Superlite works well , he will build it with a Reid Case if you want it .

nhramnl · 04-30-2018, 01:52 PM

Two things...

First, I heard a long time ago that the low-reverse drum has to change directions on the 1-2 shift in a TH350, and that makes the 350 trans less quick. I'm not stating that as a fact, so don't mob me, please.

Second, doesn't anybody like McClay's THM 200s?

Terry Cain · 04-30-2018, 02:39 PM

Quote:

Originally Posted by Dragsinger

Racers,

the engine combination I am considering [350/360/325] SBC requires a three speed trans.

Tell me about your experience with trans brake with three speed. It will be in a 3100 pound door car, expected ET 9.70 range

What is a common trans folks are racing for this situation?

What makes you think you have to run a TH350? They opened the rules up so a powerglide car can run a th350 so I think you could run a glide if wanted.

Dragsinger · 04-30-2018, 03:56 PM

Terry,

if I can run a Powerglide with the 350/360/325 that will sell the deal. I would much rather run the glide than a 3 speed.

ss3011 · 04-30-2018, 06:19 PM

Doesn't reverse direction on the 1-2 shift , but does come to a stop . Then spins up the same direction as the engine when making a 2-3 shift . The Superlight reduces that inertia dramatically for both those shifts , that is why it's so fast !

Eman · 05-01-2018, 09:44 AM

Which part are you talking about? There is no drum for low/reverse only drums are forward and direct.

04-28-2018, 03:10 PM	#1
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,759 Likes: 5 Liked 99 Times in 60 Posts	GM three speed automatic with brake for SS Racers, the engine combination I am considering [350/360/325] SBC requires a three speed trans. Tell me about your experience with trans brake with three speed. It will be in a 3100 pound door car, expected ET 9.70 range What is a common trans folks are racing for this situation? __________________ Larry Woodfin 471W

04-28-2018, 03:31 PM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: GM three speed automatic with brake for SS Larry, I have used a Rossler T350, and a ProTrans, T350. Both work great. ProTrans is a couple hundredths quicker for me. __________________ Ed Wright 4156 SS/JA

04-28-2018, 05:26 PM	#3
Jeff Jewell Member Join Date: Jun 2002 Location: Bangor, PA Posts: 182 Likes: 41 Liked 172 Times in 36 Posts	Re: GM three speed automatic with brake for SS I am using a T350 with a brake in my 3100 lb SS/CA Corvette. It's been pretty reliable. Only thing I would change from what I have now is to upgrade to a clean neutral valve body/shifter. It seems all the good transbrake valve bodies for T350s are reverse pattern.

04-29-2018, 11:18 AM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: GM three speed automatic with brake for SS Clean Neutral is nice. __________________ Ed Wright 4156 SS/JA

04-29-2018, 01:50 PM	#5
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 885 Likes: 63 Liked 221 Times in 102 Posts	Re: GM three speed automatic with brake for SS Kilgore Superlite works well , he will build it with a Reid Case if you want it .

04-30-2018, 01:52 PM	#6
nhramnl Senior Member Join Date: Feb 2010 Posts: 504 Likes: 7 Liked 352 Times in 82 Posts	Re: GM three speed automatic with brake for SS Two things... First, I heard a long time ago that the low-reverse drum has to change directions on the 1-2 shift in a TH350, and that makes the 350 trans less quick. I'm not stating that as a fact, so don't mob me, please. Second, doesn't anybody like McClay's THM 200s?

04-30-2018, 03:56 PM	#8
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,759 Likes: 5 Liked 99 Times in 60 Posts	Re: GM three speed automatic with brake for SS Terry, if I can run a Powerglide with the 350/360/325 that will sell the deal. I would much rather run the glide than a 3 speed. __________________ Larry Woodfin 471W

04-30-2018, 06:19 PM	#9
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 885 Likes: 63 Liked 221 Times in 102 Posts	Re: GM three speed automatic with brake for SS Doesn't reverse direction on the 1-2 shift , but does come to a stop . Then spins up the same direction as the engine when making a 2-3 shift . The Superlight reduces that inertia dramatically for both those shifts , that is why it's so fast !

05-01-2018, 09:44 AM	#10
Eman Member Join Date: May 2014 Location: E TN Posts: 441 Likes: 14 Liked 105 Times in 60 Posts	Re: GM three speed automatic with brake for SS Which part are you talking about? There is no drum for low/reverse only drums are forward and direct.