anyone know about the gm certa trannys? 
tranny blew again third time
Yeah, they're just as bad as the original stock tranny. I've been warning people about this for the last 3 years. TEP is the only way to go if you don't want to have this problem again.
If you're were getting a TH-350 rebuilt, I'd say no problem. I know someone over on GMLS4 talked to Jasper about getting a 4T65-HD rebuilt and they claimed to have seen schematics indicating that they supposedly do the same thing Dave does at TEP. Frankly, I don't buy it. If you saw the specialized machine work that Dave puts into his valve bodies, you'd know there's no way Jasper would take the time to do that on a low-volume rebuild.
Do yourself a favor:
Don't dick around with Jasper.
Don't dick around with a GM CERTA
Don't even bother with a rebuild from Joe-Blow from Idaho.
Contact Dave @ TEP, tell him what's happened and work out the details. His street/strip trans costs about the same price as a GM or brand x rebuild, so there's no reason (other than turnaround time) why would go anywhere else. And I have 120,000 miles on a TEP tranny in my Impala to prove that his stuff lasts.
Do yourself a favor:
Don't dick around with Jasper.
Don't dick around with a GM CERTA
Don't even bother with a rebuild from Joe-Blow from Idaho.
Contact Dave @ TEP, tell him what's happened and work out the details. His street/strip trans costs about the same price as a GM or brand x rebuild, so there's no reason (other than turnaround time) why would go anywhere else. And I have 120,000 miles on a TEP tranny in my Impala to prove that his stuff lasts.
So on your previous rebuild - did you use a stock converter ?? They're a main source of problems with a stock trans...
I pulled apart a GM Certa trans a few weeks ago to build for my Turbo GXP - was not impressed with the build quality. Shame to say cause I'm a GM fan, but it was done poorly. I've not seen a TEP trans, but Dave certainly has a good reputation - shame it's such a long wait.
So on your previous rebuild - did you use a stock converter ?? They're a main source of problems with a stock trans...
So on your previous rebuild - did you use a stock converter ?? They're a main source of problems with a stock trans...
The "new" style woven converter clutch material that is stock in our trans converter breaks down alot faster than the older hard clutch style. That's why there is a bulletin for using extra and bigger magnets, and why pressure control & shift solenoids fail from being clogged with metal shavings...
You are correct in that the relief valve is another issue that contributes to the problem and is easily addressed during a rebuild/ performance build.
The reason I brought it up was to make sure someone put it out there that the stock converter is crap... your better off getting one for a Series 2 3800SC 4t65 or getting a custom stall with the old style converter clutch. IMHO, the worst thing you could do is reuse a stock converter with a rebuild...
You are correct in that the relief valve is another issue that contributes to the problem and is easily addressed during a rebuild/ performance build.
The reason I brought it up was to make sure someone put it out there that the stock converter is crap... your better off getting one for a Series 2 3800SC 4t65 or getting a custom stall with the old style converter clutch. IMHO, the worst thing you could do is reuse a stock converter with a rebuild...
Trending Topics
I pulled apart a GM Certa trans a few weeks ago to build for my Turbo GXP - was not impressed with the build quality. Shame to say cause I'm a GM fan, but it was done poorly. I've not seen a TEP trans, but Dave certainly has a good reputation - shame it's such a long wait.
So on your previous rebuild - did you use a stock converter ?? They're a main source of problems with a stock trans...
So on your previous rebuild - did you use a stock converter ?? They're a main source of problems with a stock trans...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo The "new" style woven converter clutch material that is stock in our trans converter breaks down alot faster than the older hard clutch style. That's why there is a bulletin for using extra and bigger magnets, and why pressure control & shift solenoids fail from being clogged with metal shavings...
You are correct in that the relief valve is another issue that contributes to the problem and is easily addressed during a rebuild/ performance build.
The reason I brought it up was to make sure someone put it out there that the stock converter is crap... your better off getting one for a Series 2 3800SC 4t65 or getting a custom stall with the old style converter clutch. IMHO, the worst thing you could do is reuse a stock converter with a rebuild...
You are correct in that the relief valve is another issue that contributes to the problem and is easily addressed during a rebuild/ performance build.
The reason I brought it up was to make sure someone put it out there that the stock converter is crap... your better off getting one for a Series 2 3800SC 4t65 or getting a custom stall with the old style converter clutch. IMHO, the worst thing you could do is reuse a stock converter with a rebuild...
I guess its good I installed that remote trans filter and bumped my tcc min max values up in my tune. I almost at 90k with no issues yet although I'm sure it'll bite the dust sooner or later
Thread Starter
On The Tree
Joined: Sep 2011
Posts: 115
Likes: 0
a family friends show does good job I lost 4th gear first time I forget what happened the second time and this was a solenoid n blew my converter up Ive been having problems with the car surging at like 43 mph and the engine slam I thought it was my dod was messed up but I guess not lol. I emailed tep so now the wait
Sorry to hear about your trans.
I have no idea why this is not a sticky?
https://ls1tech.com/forums/ls4-perfo...e-project.html
Once the TEP upgrades are done the 4T65 HD is a stout transmision.
I have no idea why this is not a sticky?
https://ls1tech.com/forums/ls4-perfo...e-project.html
Once the TEP upgrades are done the 4T65 HD is a stout transmision.
Thread Starter
On The Tree
Joined: Sep 2011
Posts: 115
Likes: 0
well there rebuilding the tranny for free so I cant complain... cars almost paid off so I figure if it blows again buying one from tep brand new... I just painted my car and fixed all kinds of stuff so I want to keep this car for a long time aka until the new wrx comes out lol
Staging Lane
Joined: Mar 2010
Posts: 87
Likes: 0
well there rebuilding the tranny for free so I cant complain... cars almost paid off so I figure if it blows again buying one from tep brand new... I just painted my car and fixed all kinds of stuff so I want to keep this car for a long time aka until the new wrx comes out lol
TECH Fanatic
Joined: Oct 2003
Posts: 1,101
Likes: 0
well there rebuilding the tranny for free so I cant complain... cars almost paid off so I figure if it blows again buying one from tep brand new... I just painted my car and fixed all kinds of stuff so I want to keep this car for a long time aka until the new wrx comes out lol