Another Tranny Gone!!!
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Another Tranny Gone!!!
Well, I blew the tranny again, 5th time since late June. The first 4 were my 4L60 rebuilt. But this was a built 700R4 that they gave me out of frustration. I think it was missing the high rev kit and a shift kit, but it held up alot better than the others none the less.
The last time I talked to my mechanic he said that it's probably the gear ratio that's causing the problem. How ligit is that reason? I'm running a torquy 396 ci LT1 with a 2.59 rear end and a 1500 stall converter. Are there any other good reasons why I can't keep one in there.
I'm gonna give my mechanic a call today and see if he'll replace this one since it's only been less than 2 months since it's been put it.
[Modified by mn_vette, 3:57 PM 11/10/2003]
The last time I talked to my mechanic he said that it's probably the gear ratio that's causing the problem. How ligit is that reason? I'm running a torquy 396 ci LT1 with a 2.59 rear end and a 1500 stall converter. Are there any other good reasons why I can't keep one in there.
I'm gonna give my mechanic a call today and see if he'll replace this one since it's only been less than 2 months since it's been put it.
[Modified by mn_vette, 3:57 PM 11/10/2003]
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: Another Tranny Gone!!! (MrNuke)
Not to be a pill, but maybe, Just MAYBE it's time to find a BETTER mechanic / tranny shop? :eek:
[Modified by mn_vette, 3:13 PM 11/10/2003]
Team Owner
Joined: Mar 2000
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From: Boston, MA
Re: Another Tranny Gone!!! (mn_vette)
A good engine building is not necessarily a good transmission builder.
With that said, yes, a 2.59 is going to put more stress on the transmission and drivetrain up to the differential as it is harder to turn. In the same breath your torque convertor should absorb a lot of the shock. What kind of TC are you running?
With that said, yes, a 2.59 is going to put more stress on the transmission and drivetrain up to the differential as it is harder to turn. In the same breath your torque convertor should absorb a lot of the shock. What kind of TC are you running?
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: Another Tranny Gone!!! (scorp508)
A good engine building is not necessarily a good transmission builder.
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Race Director
Joined: Sep 2000
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From: The Top of Utah
Re: (scorp508)
The combo of 1500 and 2.59 could definitely be helping the breakage issue.
I have to disagree. With that converter and gear, the rpms and resulting torque are held to a minimum, initially. A higher stall and lower gears are going to allow the engine to rev to a higher output, sooner. His set up screams for a converter and gears, but they won't be any easier on the trans. Without knowing any more of the details, it appears as though the trans builder is falling down on the job. Good luck, and...
RACE ON!!!
Team Owner
Joined: Mar 2000
Posts: 83,383
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From: Boston, MA
Re: (CFI-EFI)
I have to disagree.
Race Director
Joined: Sep 2000
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From: The Top of Utah
Re: (scorp508)
We seem to agree that his performance will benefit from a converter and gears. I don't understand what you're saying, here.
RACE ON!!!
That only means the points before that are going to be stressing the drivetrain to get there.
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
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From: Jackson MI
Re: (scorp508)
I have to disagree.
anybody know of someone selling a dana 44??? :confused:
Safety Car
Joined: Dec 2002
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From: Charleston SC
Re: Another Tranny Gone!!! (mn_vette)
You need to install a temp gauge on the trany the next time you have one installed. I am willing to bet your gears have very little to do with the problem and excessive temperature is the major cause. I would also get a pressure gauge and see what the pressures are set at for all gears before I ran the next transmission. Most overdrive transmissions fail due to heat or an improper TV setting. Using a pressure gauge to set up your TV settings and a temp gauge to monitor the trany to make sure it is properly cooling will prevent #6 from taking the same course as the other 5.
Team Owner
Joined: Mar 2000
Posts: 83,383
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From: Boston, MA
Re: (CFI-EFI)
I don't understand what you're saying, here.
That only means the points before that are going to be stressing the drivetrain to get there.
That only means the points before that are going to be stressing the drivetrain to get there.
Something has to give and everything has a breaking point. If I dumped my clutch at 5000 with the tranny in 4th gear I'd probably expect something to fly out from under my car. :D
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
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From: Jackson MI
Re: Another Tranny Gone!!! (84LT1)
You need to install a temp gauge on the trany the next time you have one installed.
Race Director
Joined: Sep 2000
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From: The Top of Utah
Re: (scorp508)
Something has to give and everything has a breaking point. If I dumped my clutch at 5000 with the tranny in 4th gear I'd probably expect something to fly out from under my car. :D
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: (CFI-EFI)
With the trans in 4th gear, the parts that come flying out will be from the input shaft, forward. because there won't be enough torque miltiplication to hurt anything further back. Good luck, and...
[Modified by mn_vette, 7:04 PM 11/10/2003]
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: (Vic'89)
What actually broke in the Tranny ? 3/4 clutch pack or some "hard" part ?
Vic
Vic
Advanced
Joined: Oct 2003
Posts: 77
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From: Cave Creek AZ
Re: (mn_vette)
Brian,
Definitely consider what Paul stated (84LT1).
I took out my 3/4 clutch pack the first fun filled weekend after I got the 396 and new tranny setup. It turned out to be both problems but mostly temp. My new exhaust system hugging the tranny pan, more heat with more displacement..
That tranny cooler may not be effective. Put a temp sensor in the tranny pan so you'll know next time and not drive it until you figure out why the transmission is failing.
A very large all aluminum radiator may be in your future...don't fight it. If you need a procedure to follow for pressure testing/TV cable adjustment, I have a word file I can send you.
Beth
Definitely consider what Paul stated (84LT1).
I took out my 3/4 clutch pack the first fun filled weekend after I got the 396 and new tranny setup. It turned out to be both problems but mostly temp. My new exhaust system hugging the tranny pan, more heat with more displacement..
That tranny cooler may not be effective. Put a temp sensor in the tranny pan so you'll know next time and not drive it until you figure out why the transmission is failing.
A very large all aluminum radiator may be in your future...don't fight it. If you need a procedure to follow for pressure testing/TV cable adjustment, I have a word file I can send you.
Beth