View Poll Results: What gear failed on your F35?
First gear
18
11.92%
Second gear
64
42.38%
Third gear
50
33.11%
Fourth gear
11
7.28%
Fifth gear
31
20.53%
Reverse
22
14.57%
Multiple Choice Poll. Voters: 151. You may not vote on this poll
The "Broken F35 Transmission" thread
Banned
Joined: 01-12-07
Posts: 6,449
Likes: 0
From: N. Side Chi-Town
3rd gear went out on 2 trannys..piece of 3rd gear snapped off and had to go somewhere,and directly into the tranny housing.tranny housing cracked on diffrential side...
REASON:Wheel hopping 3rd gear...LOL
REASON:Wheel hopping 3rd gear...LOL
Senior Member
Joined: 11-04-07
Posts: 972
Likes: 0
From: PA
Look at DSM's... their trannies are worse than ours... and they have a solution.
If someone (or a BUNCH of people actually) would email Shep Trans, I'm sure they would eventually look into doing something for the Cobalt world... quite like they have for the DSM world.
http://sheptrans.com/
If someone (or a BUNCH of people actually) would email Shep Trans, I'm sure they would eventually look into doing something for the Cobalt world... quite like they have for the DSM world.
http://sheptrans.com/
Senior Member
Joined: 07-08-05
Posts: 6,200
Likes: 0
From: Niceville, FL
Get a thread together for Shep trans, so they can see all those that would be interested. I would be willing to shell out 2-3 grand for a well built tranny, no questions asked. Then I could continue on moddin my Cobalt without fear of the last link in my drivetrain failing for a third time!
Last edited by 2K5SS/SC?; Apr 29, 2008 at 07:36 AM.
The OFFICIAL "Shep Trans Interest Thread"
https://www.cobaltss.net/forums/drivetrain-79/built-shep-trans-interest-thread-109406/
PLEASE, if you have pictures of broken transmission and/or Transmission parts... please post them along with your degree of interest.
https://www.cobaltss.net/forums/drivetrain-79/built-shep-trans-interest-thread-109406/
PLEASE, if you have pictures of broken transmission and/or Transmission parts... please post them along with your degree of interest.
Senior Member
Joined: 07-08-05
Posts: 6,200
Likes: 0
From: Niceville, FL
Another option we have at our disposal is Performance Autowerks. They build SRT-4 transmissions since they have issues as just like us. They are familiar with our powertrain too as they were the ones that did the LS2 swap in to the Pontiac Solstice awhile back. They also support the Soltice in other ways as well. I contacted them back when I was breaking my tranny's and this is what they had to say. I would have sent in the tranny with a broken third gear, but I just never had the funds or time to do it.
Here are the Staged kits they offer for the SRT-4 tranny's that are absolutely loved by the guys on their forum. I have heard nothing but great reviews as well. 
SRT-4 Stage 1 Tranny
http://www.performanceautowerks.com/...oducts_id=1047
SRT-4 Stage 2 Tranny
http://www.performanceautowerks.com/...ducts_id=1048\
SRT-4 Stage 3 Tranny
http://www.performanceautowerks.com/...oducts_id=1275
Billy,
We would strengthen the geasrset by using new from Chevrolet parts thencryo treating them and finally using a process called WPC which isbasically microscopic shot peening which strengthens the surface of themetal. As far as shipping goes I would recommend DHL, they seem to be the most reasonable. Crate it up and give them a call. I am sure we can do something so don't worry about a charge for no upgrades.
Regards,
Dave Gilbert Performance Autowerks, Inc.12425 Rhea Dr. Suite CPlainfield, IL 60544Phone - 815-439-4547Fax - 815-439-6751
That sounds like a positive note to me. Just have a couple questionsfirst. How would you go about strengthening the gearset? What I mean is what are your processes, and what happens if the gears cannot be cryotreated or what have you? I have no idea about the inside of the tranny because that is the one area I refuse to touch on the car. Do you have a preferred shipper, and if I do indeed send it in and nothing can be done to it, what will that cost me since obviously there would be diassembly time etc? Thank you.
I am sure we could do it but we would need your trans to quote a price. Send that one in!
Sincerely,
Dave Gilbert Performance Autowerks, Inc
I recently read that you guys beef up SRT-4 transmissions, and was wondering if you would beef up my Cobalt's transmission. I just broke my second transmission and am getting tired of my third gear taking a dump. If it's possible to replace what's broken and build it stronger, please let me know.
Thank you.
Billy
We would strengthen the geasrset by using new from Chevrolet parts thencryo treating them and finally using a process called WPC which isbasically microscopic shot peening which strengthens the surface of themetal. As far as shipping goes I would recommend DHL, they seem to be the most reasonable. Crate it up and give them a call. I am sure we can do something so don't worry about a charge for no upgrades.
Regards,
Dave Gilbert Performance Autowerks, Inc.12425 Rhea Dr. Suite CPlainfield, IL 60544Phone - 815-439-4547Fax - 815-439-6751
That sounds like a positive note to me. Just have a couple questionsfirst. How would you go about strengthening the gearset? What I mean is what are your processes, and what happens if the gears cannot be cryotreated or what have you? I have no idea about the inside of the tranny because that is the one area I refuse to touch on the car. Do you have a preferred shipper, and if I do indeed send it in and nothing can be done to it, what will that cost me since obviously there would be diassembly time etc? Thank you.
I am sure we could do it but we would need your trans to quote a price. Send that one in!
Sincerely,
Dave Gilbert Performance Autowerks, Inc
I recently read that you guys beef up SRT-4 transmissions, and was wondering if you would beef up my Cobalt's transmission. I just broke my second transmission and am getting tired of my third gear taking a dump. If it's possible to replace what's broken and build it stronger, please let me know.
Thank you.
Billy
SRT-4 Stage 1 Tranny
http://www.performanceautowerks.com/...oducts_id=1047
SRT-4 Stage 2 Tranny
http://www.performanceautowerks.com/...ducts_id=1048\
SRT-4 Stage 3 Tranny
http://www.performanceautowerks.com/...oducts_id=1275
Last edited by 2K5SS/SC?; Apr 29, 2008 at 07:57 AM. Reason: Automerged Doublepost
Senior Member
Joined: 06-28-06
Posts: 1,890
Likes: 0
From: No man's land
Back from the dead. My F35 went out this weekend. I haven't pulled it yet but i can see a hole in the diff housing and a cracked gearbox case. The gearbox is cocked at an angle to the bellhousing. The car wont even start right now because the thing is so badly bound up. I'm worried there might be more problems. This came out of nowhere for me. The car has almost 47,000 on the clock.
Banned
Joined: 03-20-07
Posts: 1,334
Likes: 0
From: boston
Back from the dead. My F35 went out this weekend. I haven't pulled it yet but i can see a hole in the diff housing and a cracked gearbox case. The gearbox is cocked at an angle to the bellhousing. The car wont even start right now because the thing is so badly bound up. I'm worried there might be more problems. This came out of nowhere for me. The car has almost 47,000 on the clock.
Senior Member
Joined: 05-29-06
Posts: 1,084
Likes: 0
From: Pennsylvania, Greensburg
I'd like to see how many trannies get nuked with the turbo swaps. What do you think would subject more strain on a transmission? All the torque and power brought on instantly by a blower or a gradual sloping power curve brought on by a turbo.
The 2nd Gear Synchro isn't power related. I personally think that one is from hard downshifting... and crappy parts.
The people who are experiencing third gear shred... that is probably from the instant torque of the S/C. But a BIG turbo can produce the same results.
The people who are experiencing third gear shred... that is probably from the instant torque of the S/C. But a BIG turbo can produce the same results.
Senior Member
Joined: 09-13-06
Posts: 828
Likes: 0
From: San Antonio
Haz l33t wheelz.
Joined: 09-14-07
Posts: 18,883
Likes: 3
From: Costa Mesa CA
