Re: When is a Race trans not a race trans....
[Re: 451Mopar]
#2589475
12/09/18 05:40 PM
12/09/18 05:40 PM
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Joined: Mar 2006
Posts: 9,826 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,826
MI, usa
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Might install a later dual "O"-ring rear band pin. Haven't decided on bands yet. The stock bands look fine and thinking of reusing them, but I have a new Mopar Performance Front band on the shelf. I think it is Kevlar? Not sure if I should install it or not. Need to still get a trans cooler and maybe a deep pan. I add RTV over the rear band pin depression at the outside of the case. never had one leak. If the old rear band looks good use it. I like the hard Red band best. I'd use the Mopar one you have. You can buy more Altos here, $6.80 each. In fact they carry near everything you might need. https://www.transpartsonline.com/TRANS_P...nsPartsType=727 But I've found the greens to hold up at 700Hp with no issue. Cant beat the 518 OD truck pan. free ship from Amazon, $39 https://www.amazon.com/gp/product/B00PH4...d=ATVPDKIKX0DERDoug
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Re: When is a Race trans not a race trans....
[Re: Moparmal]
#2590071
12/10/18 09:33 PM
12/10/18 09:33 PM
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Joined: Mar 2009
Posts: 2,458 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,458
Sydney,Australia
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Thx everyone for the advice. I have one last dumb question -
IF, I run a Super Sprag and a LBA valve body, is there any chance of the drum still over-running and exploding? .....or will these two items fix the risk? Yes Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: When is a Race trans not a race trans....
[Re: Moparmal]
#2590249
12/11/18 05:52 AM
12/11/18 05:52 AM
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Joined: Jan 2003
Posts: 3,943 Melbourne.....Oz-land
Moparmal
OP
master
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OP
master
Joined: Jan 2003
Posts: 3,943
Melbourne.....Oz-land
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I think the separation of views is coming down to HOW a drum explosion may occur. Ruling out the common cause of no LBA valve body causing an over-running clutch.....I think I’m right in assuming only some form of drivetrain breakage would cause similar trauma. I’m prepared to bank on no major breakages at my power level - so hopefully the LBA VB and the Super Sprag will be enough fire proofing F this thinking is flawed...have at it
67 RO23 clone with 6.1 SRT Hemi and dual quads. Soon to have Drag Pak induction and Throttle body.
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Re: When is a Race trans not a race trans....
[Re: 451Mopar]
#2590301
12/11/18 12:04 PM
12/11/18 12:04 PM
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Joined: Dec 2013
Posts: 4,669 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,669
Wichita
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On the race trans stuff, I though the TF-2 shift kit (or was it the B&M Trans pack?) used to include the HD front band strut? Was looking through the TF2 kit and no band strut, so ordered up one of the nice thick band struts this morning. I've been using the TF-2 kits for over 25 years and never had one come with a HD band strut, so it must have been the B&M.
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Re: When is a Race trans not a race trans....
[Re: dvw]
#2590396
12/11/18 02:51 PM
12/11/18 02:51 PM
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Joined: Jan 2003
Posts: 25,750 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,750
Rio Linda, CA
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Me. Never seen one in person either. (only pics)
The INTERNET, the MISinformation superhighway
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Re: When is a Race trans not a race trans....
[Re: Moparmal]
#2590409
12/11/18 03:20 PM
12/11/18 03:20 PM
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Joined: Dec 2005
Posts: 11,530 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,530
Fulton County, PA
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After all these years, there's just no reason for anyone to be exploding a transmission. But...people still do, just like they still stick their foot under a mower, touch a stove to see if it's hot and blow their fingers off with fireworks.
5500-6000 engine RPM with a broken roller clutch is all it takes. Lower horsepower applications can get by with a non-LBA valvebody, IF you drive the car correctly. At higher power levels, you have to apply that band to give the roller clutch some help. And you have to maintain the thing - take it apart once in a while and look at it - instead of running it till it quits. In any race style application, not putting a good drum in the thing is asinine.
If the results don't match the theory, change the theory.
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Re: When is a Race trans not a race trans....
[Re: CMcAllister]
#2590416
12/11/18 03:34 PM
12/11/18 03:34 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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After all these years, there's just no reason for anyone to be exploding a transmission. But...people still do, just like they still stick their foot under a mower, touch a stove to see if it's hot and blow their fingers off with fireworks.
5500-6000 engine RPM with a broken roller clutch is all it takes. Lower horsepower applications can get by with a non-LBA valvebody, IF you drive the car correctly. At higher power levels, you have to apply that band to give the roller clutch some help. And you have to maintain the thing - take it apart once in a while and look at it - instead of running it till it quits. In any race style application, not putting a good drum in the thing is asinine. Well I guess I'm insane.. been running the stock drum since the 80s.. yeah I've tore it apart a few times for worn parts but NEVER blew it up.. no LBA.. dont pedal it in LOW.. SHIFT it.. they only blow in low gear so get out of low as soon as you can
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Re: When is a Race trans not a race trans....
[Re: Moparmal]
#2590521
12/11/18 07:02 PM
12/11/18 07:02 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If I have an LBA valve body, AND a Super Sprag, how can the drum explode? This is what I’m not getting 2 things here.. the LBA wont stop it fast enough and the super sprag isnt a save all.. it helps but it doesnt help all.. if you get on and off the gas the rollers go back then slam forward and tighten up to tight for the sprag and starts to come apart EDIT there is 3 ways to not have a explosion.. 1 is dont pedal the car under load.. 2 is buy a drum(alum or steel or 3.. put a 904 in it
Last edited by MR_P_BODY; 12/11/18 07:18 PM.
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Re: When is a Race trans not a race trans....
[Re: Moparmal]
#2590585
12/11/18 09:41 PM
12/11/18 09:41 PM
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Joined: Dec 2005
Posts: 11,530 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,530
Fulton County, PA
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If I have an LBA valve body, AND a Super Sprag, how can the drum explode? This is what I’m not getting Chances are it won't, unless the rear band fails to apply due to broken parts (servo, band, etc.) AND the roller clutch has also failed due to driver error, parts failure, AND you have your foot in it causing the engine to free rev to 6000+. You have to decide if you want to trust that all of that won't happen at the same time.
Last edited by CMcAllister; 12/11/18 10:56 PM.
If the results don't match the theory, change the theory.
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