Low Band Apply Question

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Divenut

Divenut

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Hey Folks,

I was wondering if a manual valve body (727) without low-band apply can be modified to apply low band? Just curious as I am kicking around some options for winter projects.

Thanks in advance to the resident FABO Torqueflite gurus!

Pat
 
John Cope of CRT used to do the mods to the valve bodys before he started custom making his own.
 
I emailed John Cope many years ago about your exact same question. He replied back and said ....no.
 
3forty said:
I emailed John Cope many years ago about your exact same question. He replied back and said ....no.
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I did to and he said no that he no longer did that.
But it can be done. I have a turbo action vb that I would like modified.
 
Low band apply in this trans! This is my Dart...luck to have it in his catalog! LOL

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You don't even NEED low band apply as long as you do your burnout spinning into third gear.
 
Jadaharabi said:
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I thought without low band apply you could rip the rear sprag out doing low gear burn outs.
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You can if it hooks up while it's still in 2nd gear. The shock of it hooking in 2nd is what does it. If it's still spinnin goin into 3rd, it ain't gonna happen.
 
oldkimmer said:
It’s actually not the shock of grabbing traction in 2nd, but when it shifts back to 1st and it grabs traction. Kim
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I1m no trans expert, but had a violent trans explosion back in the day, I wont have one w/o it now----JMO
 
I have been racing torqueflites for 30 years and I had lots of trans problems early on. I eventually went to Protrans and had them do the rebuild. They gave me instructions on how to make it live. NEVER do a burnout in low or second. Don't even start there. Of course if its a stock 330 hp car you really don't have to worry about it but even then you should have a shift kit installed that lets you have total manual control. That way you can start and end your burnout in high gear.
 
Thank you for the compliment on my 65. I have owned this car since 1969. Always running a 999 [904] and never have had issues with the trans [burn out] procedure/failure. I have been racing this car since the 80's. Always a small block...now just a little bigger small block! 433". As you can see, 9.53 dial, yes it covers this number all the time. Single carb no power adders.
Burn outs...never 1st gear! I sometimes use 2nd gear and shift immediately into 3rd. After the burnout, I make sure I stop, shift into first and move forward. Pre-stage, [no neutral at that time] then stage when my opponent is present and ready!! Trans brake button on, Enjoy the ride upon button release!

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Just to be clear because i'm reading this thread to learn something here that i never had any knowledge of before. Burnouts in a 9 second car don't start in first gear? my street car is under 400HP should i not start in first gear when i'm playing around doing burnouts. I know i'm not playing in the same ballpark as the cars in this post, but at what point do you need to be concerned about breaking something?
 
If ur tranny is fully automatic, do ur burnout in 1st gear (manual low) and leave it in 1st, do not shift out of first till ur done ur burnout. Starting in 2nd came along when the reverse manual valve bodies came out as they never had low band apply. Kim
 
oldkimmer said:
If ur tranny is fully automatic, do ur burnout in 1st gear (manual low) and leave it in 1st, do not shift out of first till ur done ur burnout. Starting in 2nd came along when the reverse manual valve bodies came out as they never had low band apply. Kim
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To further explain the 1st gear manual low is used because your trans is using the band apply. In drive, low gear does not use the band apply.
 
FlDart360 said:
Just to be clear because i'm reading this thread to learn something here that i never had any knowledge of before. Burnouts in a 9 second car don't start in first gear? my street car is under 400HP should i not start in first gear when i'm playing around doing burnouts. I know i'm not playing in the same ballpark as the cars in this post, but at what point do you need to be concerned about breaking something?
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Everyone should care about their 727 blowing up. The burnouts in question are when you hold still in the burnout box and do a burnout especially with a line lock. It allows the wheel speed to exceed engine speed and the overrunning clutch is what picks up a major amount of RPM and the trans goes boom. When screwing around on the street there is load on the tires and its harder to wreck the over running clutch. When you rebuild your torqueflite always use a shift kit with total manual control. A 400 hp motor should be able to annihilate the tires at will on the street. So yes if possible high gear is the gear of choice for burnouts. A&A and Protrans (Protrans makes A&As parts) make a solution for the overrunning clutch assembly.
 
turbodart68 said:
And the 904/998/999 don't have this problem. If you have a 400hp small block then you should try a 904, they rob a lot less power.
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Cant a guy start his burn out in drive w/ a full auto, it will shift to 2 and than 3rd by it self in the water, than roll out of the water in 3rd drying the tires off. Never hooking up /letting off while still spinning ?????? I have only made two runs at the strip and mine didn`t even try to hook up coming out of the burn out, "or anywhere else for that matter."
 
oldkimmer said:
If ur tranny is fully automatic, do ur burnout in 1st gear (manual low) and leave it in 1st, do not shift out of first till ur done ur burnout. Starting in 2nd came along when the reverse manual valve bodies came out as they never had low band apply. Kim
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!!!THANKS!!!! This finally clears up some confusion
 
famous bob said:
Cant a guy start his burn out in drive w/ a full auto, it will shift to 2 and than 3rd by it self in the water, than roll out of the water in 3rd drying the tires off. Never hooking up /letting off while still spinning ?????? I have only made two runs at the strip and mine didn`t even try to hook up coming out of the burn out, "or anywhere else for that matter."
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Yes, you can do that but you run the risk of the tires going fast than the crank speed and thats what breaks them. If I had a fully auto car that didn't have manual operation I would do my burnouts dry.
 
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