Info request. Tranmission and limits
Thread Starter
Intermediate
Joined: Jan 2017
Posts: 31
Likes: 0
Info request. Tranmission and limits
I know this has been asked a million times before, but searching has not given me a definitive answer. I know the information I am requesting depends on other variables, but what power/torque can the transmission, diff and axles handle. I am looking to get into the 600rwhp range and I want to stay in the low 500s for torque. Car is an 2007 base LS2 with an ECS supercharger. I am looking at adding LT headers, small cam and trick flow heads along with a smaller pulley. I have not shot down the idea of having a new forged crate motor dropped in if the stock block is not up to the task of surviving those numbers. It is a street car that never sees the track, but it does get its exercise. Any help or advice is appreciated. Thank you
Last edited by Kipprc; Dec 14, 2017 at 04:49 PM.
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Depends, depends, depends
500rwhp to 1000rwhp depending on application, mods, use, tires, etc etc etc.
You don't even say if auto or manual.
Some people break all that at 450rwhp, others live at 800+ on stock stuff for years.
500rwhp to 1000rwhp depending on application, mods, use, tires, etc etc etc.
You don't even say if auto or manual.
Some people break all that at 450rwhp, others live at 800+ on stock stuff for years.
Thread Starter
Intermediate
Joined: Jan 2017
Posts: 31
Likes: 0
I apologize. I did leave out details and still asked a crystal ball question. Car is automatic, no DRs on the car. The car is stock aside from the entry level ECS blower setup and a catback. I know that many factors contribute to failure. Just trying to use what those before have done so I don't have to do the same job twice.
Last edited by Kipprc; Dec 15, 2017 at 02:20 PM. Reason: Mispell
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Tranmissions depends on ability to keep it cool and tuning. On a normal street tire, and not abused rear end and axles will live ~650-800 indefinately. 1000+ is not an issue if not doing launches on a prepped track.
Transmission limits ~650-700rwhp, but others have done 1000+ successfully on a stock 6l80. Tuning is key, as is keeping fluid cool.
Transmission limits ~650-700rwhp, but others have done 1000+ successfully on a stock 6l80. Tuning is key, as is keeping fluid cool.
Burning Brakes
Joined: May 2004
Posts: 768
Likes: 30
From: Olive Branch MS
I would add that if you are just going into the 600 horse range the trick flow heads are a bit of a waste of money. I'd put that into a nice fuel system or put it back towards a shortblock.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Tranmissions depends on ability to keep it cool and tuning. On a normal street tire, and not abused rear end and axles will live ~650-800 indefinately. 1000+ is not an issue if not doing launches on a prepped track.
Transmission limits ~650-700rwhp, but others have done 1000+ successfully on a stock 6l80. Tuning is key, as is keeping fluid cool.
Transmission limits ~650-700rwhp, but others have done 1000+ successfully on a stock 6l80. Tuning is key, as is keeping fluid cool.
Spot-on advice right there...
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Team Owner
Joined: Sep 2005
Posts: 20,352
Likes: 568
From: Ventura County, Calif
If you aren't already doing it, I suggest you go over to the C6 Forced Induction Forum and talk to those folks. Lots of experience and some good stories. 
https://www.corvetteforum.com/forums...n-nitrous-123/
https://www.corvetteforum.com/forums...n-nitrous-123/
Melting Slicks
Joined: Jul 2005
Posts: 2,649
Likes: 863
While I am NOT an expert - from what I've been told - the limiting factor on the stock short block is the hypereutectic piston. You are already in the area that is "marginal". If you were to head to a "top end" challenge - and stayed hard on the power for a long period of time - the stock pistons would probably get pretty "unhappy". But don't take my word for it - there are a number of engine builders out that have lots of experience with the LS motors talk to them and ask their opinion of hypereutectic pistons (vs. forged pistons) for supercharged applications...
Truthfully - I would consider adding meth injection before I'd worry about the heads. The supercharger "makes up" for a cylinder heads lack of flow by forcing the air in. The engine doesn't care how the air gets into the cylinder - via by a bit of extra boost - or by cylinder head ports that flow a bit better.
Truthfully - I would consider adding meth injection before I'd worry about the heads. The supercharger "makes up" for a cylinder heads lack of flow by forcing the air in. The engine doesn't care how the air gets into the cylinder - via by a bit of extra boost - or by cylinder head ports that flow a bit better.