Turbo 350 Valve Body

Charlie Laraia · 02-26-2014, 01:23 PM

I hope some of you guys can steer me in the right direction. Can you recommend a valve body for my T350? There are many choices as far as brands, band apply, non band apply etc. Unlike everything else I have done to my car, I want to make the right choice and only buy a valve body one time.

(I do not want a trans brake).

Thank you all in advance.

jmantle · 02-26-2014, 02:30 PM

Quote:

Originally Posted by Charlie Laraia

I hope some of you guys can steer me in the right direction. Can you recommend a valve body for my T350? There are many choices as far as brands, band apply, non band apply etc. Unlike everything else I have done to my car, I want to make the right choice and only buy a valve body one time.

(I do not want a trans brake).

Thank you all in advance.

Call Coan, their 350 stuff works.

Jim Mantle V/SA 6632

Alan Roehrich · 02-26-2014, 05:17 PM

ATI reverse pattern no band apply. Make sure you take the band out and make the other modifications in the instructions.

Jim Kaekel · 02-26-2014, 05:28 PM

Quote:

Originally Posted by alan roehrich

ati reverse pattern no band apply. Make sure you take the band out and make the other modifications in the instructions.

x2

Doug Domm · 02-26-2014, 10:29 PM

Quote:

Originally Posted by Alan Roehrich

ATI reverse pattern no band apply. Make sure you take the band out and make the other modifications in the instructions.

I have very limited automatic transmission knowledge. What is your reason for this. Not trying to be a smart @@@ just wanting to learn a little more. Thanks Doug

Alan Roehrich · 02-27-2014, 12:08 AM

If you're not using the 2nd brake band, it is a liability, it is in the way, and with the no band apply valve body, there's really nothing to hold it in place.

The instructions will also have you remove or modify a few other parts.

Doug Domm · 02-27-2014, 12:53 AM

Ok. That part I understand now. Are you familiar with the Turbo Action Cheetah valve body with auto 1-2. It doesn't engine brake in 1st gear. Would that be the same no band apply as what your achieving with the ATI reverse pattern with no band apply?

ss3011 · 02-27-2014, 09:52 AM

The band in a 350 is to hold the high gear drum so you get engine braking in 2nd gear. There is a clutch pack in the very back of the trans, that applys for 1st gear braking. You typically don't want that the lo/rev clutch on in 1st gear, because when you make the shift from 1st to 2nd it would need to be released, and could cause drag inside. A 1st to 2nd shift is much cleaner if the lo/rev clutch is not on in 1st gear.

bob3240 · 02-28-2014, 06:39 PM

Doug, the Turbo Action valve body w/1-2 shift uses the governor system,whereas the ATI eliminates the band and the governor. Of course with the Turbo Action, the shift points are determined by changing the weights and springs in the governor. Your choice!!

Doug Domm · 02-28-2014, 07:41 PM

Thanks Bob^3240. But is one faster than the other because of band drag?

02-26-2014, 01:23 PM	#1
Charlie Laraia Junior Member Join Date: Feb 2014 Location: Wethersfield, Connecticut Posts: 22 Likes: 0 Liked 0 Times in 0 Posts	Turbo 350 Valve Body I hope some of you guys can steer me in the right direction. Can you recommend a valve body for my T350? There are many choices as far as brands, band apply, non band apply etc. Unlike everything else I have done to my car, I want to make the right choice and only buy a valve body one time. (I do not want a trans brake). Thank you all in advance.

02-26-2014, 05:17 PM	#3
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,093 Likes: 1,537 Liked 1,766 Times in 401 Posts	Re: Turbo 350 Valve Body ATI reverse pattern no band apply. Make sure you take the band out and make the other modifications in the instructions. __________________ Alan Roehrich 212A G/S

02-27-2014, 12:08 AM	#6
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,093 Likes: 1,537 Liked 1,766 Times in 401 Posts	Re: Turbo 350 Valve Body If you're not using the 2nd brake band, it is a liability, it is in the way, and with the no band apply valve body, there's really nothing to hold it in place. The instructions will also have you remove or modify a few other parts. __________________ Alan Roehrich 212A G/S

02-27-2014, 12:53 AM	#7
Doug Domm Member Join Date: Apr 2006 Location: canada Posts: 251 Likes: 28 Liked 84 Times in 21 Posts	Re: Turbo 350 Valve Body Ok. That part I understand now. Are you familiar with the Turbo Action Cheetah valve body with auto 1-2. It doesn't engine brake in 1st gear. Would that be the same no band apply as what your achieving with the ATI reverse pattern with no band apply?

02-27-2014, 09:52 AM	#8
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 908 Likes: 70 Liked 238 Times in 113 Posts	Re: Turbo 350 Valve Body The band in a 350 is to hold the high gear drum so you get engine braking in 2nd gear. There is a clutch pack in the very back of the trans, that applys for 1st gear braking. You typically don't want that the lo/rev clutch on in 1st gear, because when you make the shift from 1st to 2nd it would need to be released, and could cause drag inside. A 1st to 2nd shift is much cleaner if the lo/rev clutch is not on in 1st gear.

02-28-2014, 06:39 PM	#9
bob3240 Member Join Date: Jan 2009 Location: lebanon ohio Posts: 251 Likes: 3 Liked 16 Times in 5 Posts	Re: Turbo 350 Valve Body Doug, the Turbo Action valve body w/1-2 shift uses the governor system,whereas the ATI eliminates the band and the governor. Of course with the Turbo Action, the shift points are determined by changing the weights and springs in the governor. Your choice!!

02-28-2014, 07:41 PM	#10
Doug Domm Member Join Date: Apr 2006 Location: canada Posts: 251 Likes: 28 Liked 84 Times in 21 Posts	Re: Turbo 350 Valve Body Thanks Bob^3240. But is one faster than the other because of band drag?