Non LBA Transbrake Street/Strip Do's/Don'ts
#3028690
03/29/22 01:40 PM
03/29/22 01:40 PM
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Joined: Apr 2009
Posts: 3,415 Toronto
mshred
OP
master
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OP
master
Joined: Apr 2009
Posts: 3,415
Toronto
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Have a line on a really good deal for a used Turbo Action Brake without LBA. Was planning to throw it into a 727 behind a procharged EFI 5.7 in my street/strip a-body (3400lbs). My original plan was to build a T400 for the setup, but I already have a 727 and shifter, just need the brake and a few rebuild parts as well as the converter. I have searched the heck out of it on here, but am I missing anything from the DONTS list of using a Non LBA brake...
-Dont burn out or spin tires in first...Water in 2nd, Burnout in 2nd to 3rd -Dont pedal in first....spin then off the throttle (although that means no 1st gear fun on the street since its always spin city) -Dont downshift into first while street driving -Any sort of driveline failure, remove the trans to inspect sprag, drum, and rest of trans.
I know most people these days use LBA in the torqueflites. My old 904 tranzact brake was non LBA, and I loved it....not really a fan of the engine braking in 1st gear with the LBA valvebodies. Anybody out there still using these kind of valvebodies/transbrakes?
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: mshred]
#3028742
03/29/22 03:29 PM
03/29/22 03:29 PM
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Joined: Jan 2003
Posts: 8,027 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,027
Tulsa OK
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I have been driving on Turbo Action Manual VBs without LBA for 24 years or so, both 727 and 904. I am bad about dropping into low and letting it freewheel when coming to a stop at lower speeds. I have done plenty wrong with them and not had any trouble. I am sure if I ever move to a LBA VB I will eat steering wheel a few times as I drop it in low before I am stopped LOL.
If you read enough on here you will think that if you do any of the things wrong that they will explode immediately and that is just not the case. But there is reason to not drive it like a 16 year old lol
68 Barracuda Formula S 340
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: Bad340fish]
#3028743
03/29/22 03:34 PM
03/29/22 03:34 PM
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Joined: Dec 2013
Posts: 4,680 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,680
Wichita
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If you read enough on here you will think that if you do any of the things wrong that they will explode immediately and that is just not the case. But there is reason to not drive it like a 16 year old lol
Haha, yep!
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: Bad340fish]
#3028759
03/29/22 04:49 PM
03/29/22 04:49 PM
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Joined: Feb 2015
Posts: 2,077 CA
crackedback
top fuel
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top fuel
Joined: Feb 2015
Posts: 2,077
CA
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I have been driving on Turbo Action Manual VBs without LBA for 24 years or so, both 727 and 904. I am bad about dropping into low and letting it freewheel when coming to a stop at lower speeds. I have done plenty wrong with them and not had any trouble. I am sure if I ever move to a LBA VB I will eat steering wheel a few times as I drop it in low before I am stopped LOL.
If you read enough on here you will think that if you do any of the things wrong that they will explode immediately and that is just not the case. But there is reason to not drive it like a 16 year old lol
Dropping in low and freewheeling isn't bad. Stabbing into the throttle and shocking the trans is where the issues start. Me too on the Neutral drops on the old 68 Polara... JMO when running that kind of steam, all it takes is one time having a drum come apart where that $500 spent is cheap. Broken feet, legs, auto body repair/parts.
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: rickraw]
#3028864
03/29/22 10:47 PM
03/29/22 10:47 PM
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Joined: Jan 2003
Posts: 11,713 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,713
Portage,michigan
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Billet drum is cheaper than a half a leg. I always start burnouts in second gear, never first. Have no idea why anyone would use first gear. Car would have to be an extreme dog to not spin wet tires in second gear
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: crackedback]
#3028876
03/29/22 11:57 PM
03/29/22 11:57 PM
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Joined: May 2003
Posts: 13,189 aZLiViN
J_BODY
I Live Here
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I Live Here
Joined: May 2003
Posts: 13,189
aZLiViN
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Get a billet drum for the 727.
in case you didn’t get that… GET A BILLET FRONT DRUM FOR THE 727! In the 2 cases I was near to in the 8.75 gear broke on launch, shocked the sprag and all L broke loose.
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: cudaman1969]
#3028884
03/30/22 01:50 AM
03/30/22 01:50 AM
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Joined: Aug 2003
Posts: 43,200 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,200
Bend,OR USA
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Number one rule I follow is after any burn out (yes I start in first) let it roll out, back in first to set the sprag. If it’s broke you’ll know it, feels like second gear. Freewheeling is what kills them so don’t do that! After every pass I go quickly to first then to neutral, after stopping then set it again. Another thing why is everyone scared of going to neutral after the run? Your shifter HAS a stop to keep it from going into reverse don’t it? NEVER start your burn out in low gear with a reverse manual non low band apply valve body, NEVER Unless you want to die AKA aside, Mopar 727 started exploding the front drums with the first reverse manual valve body non low band apply when racers over wound the motors in low gear and shifted them into second over 6000 RPM is what i was told by Art Carr as well as in several of the old Mopar sponsored drag race seminar by the Mopar drag race engineers and marketing folks
Last edited by Cab_Burge; 03/30/22 01:56 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Non LBA Transbrake Street/Strip Do's/Don'ts
[Re: Cab_Burge]
#3028910
03/30/22 08:53 AM
03/30/22 08:53 AM
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Joined: Jan 2004
Posts: 8,273 fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,273
fredericksburg,va
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Number one rule I follow is after any burn out (yes I start in first) let it roll out, back in first to set the sprag. If it’s broke you’ll know it, feels like second gear. Freewheeling is what kills them so don’t do that! After every pass I go quickly to first then to neutral, after stopping then set it again. Another thing why is everyone scared of going to neutral after the run? Your shifter HAS a stop to keep it from going into reverse don’t it? NEVER start your burn out in low gear with a reverse manual non low band apply valve body, NEVER Unless you want to die AKA aside, Mopar 727 started exploding the front drums with the first reverse manual valve body non low band apply when racers over wound the motors in low gear and shifted them into second over 6000 RPM is what i was told by Art Carr as well as in several of the old Mopar sponsored drag race seminar by the Mopar drag race engineers and marketing folks Never in over 50 years have I exploded a drum, never been around one that did. If you explode one you’re a no driving sob, sell the car and find another hobby. Now we have had tires hit wet spot, broke gears, broke u-joints and broke axels BUT the car went on the trailer and back home to check trans. VERY easy to feel if the sprag is broke. Only a fool would try and race. And I never do burnouts in the water, spin the tire in water then move forward out of water to the semi dry spot then do a burnout, that’s why I start in first gear.
Last edited by cudaman1969; 03/30/22 08:59 AM.
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