Modified cars-trans question
Thread Starter
5th Gear
Joined: Jul 2024
Posts: 5
Likes: 1
Modified cars-trans question
Those of you that have added power to your car. Like 100hp or more.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
Race Director
Joined: Mar 2007
Posts: 11,342
Likes: 8,495
Those of you that have added power to your car. Like 100hp or more.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,789
Likes: 2,223
From: Sammamish, WA
Lingenfelter mentioned they had to work very closely by the transmission's expected power delivery curves, etc. when they developed their 427 engine package, to make it work seamlessly. So yes, I think it's very impotant:
https://www.lingenfelter.com/product...orvette-engine
... and here's the story about it that mentioned challenges in making transmission get along well with the engine:
https://www.motortrend.com/features/...oogle_vignette
https://www.lingenfelter.com/product...orvette-engine
... and here's the story about it that mentioned challenges in making transmission get along well with the engine:
https://www.motortrend.com/features/...oogle_vignette
Intermediate
Joined: Jan 2024
Posts: 41
Likes: 8
Those of you that have added power to your car. Like 100hp or more.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
1.) Have u had trans problems
2.) If so, what was the problem
3.) what was you able to do to fix the problem
Reason for my questions, I want to add power but hearing that no one is able to repair the trans. Only a replacement at 20k is the option. Makes me a little hesitant. Also we are now in the 5th year of this model I’m a little surprised that this is the case. At some point will builders wash their hands of this and move on to the next platform?
I’ve started seeing lots more of modified cars having issues even with the lifetime/extended warranty builds. Problem are the cars are getting shipped back and forth multiple times and not always being completely fixed. Who’s paying for transport on these? I get you have to pay to play. I’ve built many cars. But most platforms can add 100-200 hp with supporting mods and be reliable.
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
I havent experienced any issues yet but am expecting the likelihood is high that I will. Admittedly I was only able to get in one HPDE session post build this year but have continued to drive any day that it has been warm enough. No issues at all during the HPDE. Accelerating from a stoplight I do notice the take off is not as smooth as stock but it isnt terrible and as tradeoffs go the extra 100ish HP is worth it. As soon as the FF kit is installed and possibly the stroker kit I am planning on transmission tuning. Just as if I was building a previous gen manual and had to upgrade the clutch I believe you have to expect at some point something is going to break and just factor that eventuality in to your budget.
Last edited by mittens; Dec 11, 2024 at 05:03 PM.
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
Nice. From what I have been gathering that's kinda high for not clutch slip issues but awesome to hear.
do you run any kind of clutch module to incease clamping pressure? Run in hard a lot or just a cruiser with a random push for a few gears?
do you run any kind of clutch module to incease clamping pressure? Run in hard a lot or just a cruiser with a random push for a few gears?
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Race Director
Joined: Sep 2016
Posts: 13,180
Likes: 10,522
When the C8 was introduced Tremec's specs said the unit was rated up to 590 lb-ft. But that was before we started seeing issues. The Z06 has basically the same peak torque as the Stingray, but theDCT in the Z06 has an extra clutch plate on the odd gear shaft, a "strengthened case and bell housing" and larger output flanges (which support larger halfshafts).
Safety Car
Joined: Nov 2005
Posts: 4,364
Likes: 934
From: Huntsville Alabama
When the C8 was introduced Tremec's specs said the unit was rated up to 590 lb-ft. But that was before we started seeing issues. The Z06 has basically the same peak torque as the Stingray, but theDCT in the Z06 has an extra clutch plate on the odd gear shaft, a "strengthened case and bell housing" and larger output flanges (which support larger halfshafts).
Interesting the Trans has some changes. are they interchangeable?
Instructor
Joined: May 2013
Posts: 114
Likes: 45
Also the engine tune dictates the clamp pressure on the clutches. Procharger figured it out on the tune. Mine shifts very precise and does not slam gears. I worked with them a bit on it since I run meth injection on the car too.
Either way, the trans/stock clutch is holding up just fine.
Drifting
Joined: Feb 2008
Posts: 1,629
Likes: 1,060
From: Chattanooga tn
I am having slip issues even at NA power levels on my z06. Can't 100 percent say its not the OEM tune but it will slip after multiple drag passes making me think it's actually the clutches. Trying to spray nitrous even just a 100 shot will result in limiter hitting, or substantial slipping. I have ordered dodson clutches and a pressure controller.
Instructor
Joined: May 2013
Posts: 114
Likes: 45