Simple question but it's proven VERY difficult to find the answer. What type and model of 5 speed manual transmission does Roush or Saleen use in their newer model cars 2005+? I know they use the 6 speed TR-6060 but does anyone know what they use in their 5 speed version? Thanks for your help.

 

They use the Ford trannys that come with the cars.

 

Ding ding ding. Roush and Saleen wouldn't put THAT much money into them....

 

Ok, so let me get this straight... Roush and Saleen are building 475HP cars mated to the stock TR-3650s rated at 360ft lbs? This can't be right, are they going through thousands of trannies every week on warrenty coverages? Seems like they'd sink enough money into their cars so they wouldnt be spending bigger money constantly repairing them and having a bunch of unhappy customers. A stock TR-3650 will fall apart under just about any load other than stock, they are garbage in their stock form. Now, if you have a race shop build you a TR-3650 that's a whole nother story...Please tell me they arent using STOCK trannies...Thanks.

 

oh **** check this out---GOOGLE

The S281 SC Mustang is equipped with an improved version of the current 5-speed manual gearbox. The ratios are the same as last year but the gear change mechanism has been revised for smoother shifting. In addition, the S281 SC receives a higher final-drive ration 3.55:1 versus 3.27:1 from last year - for more aggressive acceleration. An electronically-controlled 5-speed automatic transmission is available. It is matched to a 3.31:1 final-drive ratio.

 

http://www.mustangheaven.com/stangsp...een/2005_c.htm

http://www.muscularmustangs.com/05saleen03.php

first two links on google for searching 2005 saleen mustang specs

 

Yep, I saw those and note that neither tell you the model of the transmission and hence the problem. They all say an "enhanced version" of the current transmission so I can only assume they are talking about the Tremec 3650 but I'd really like to see something that actually says the brand and model and maybe even where we can get one ourselves. If the TR-3650 can be rebuilt to withstand the torque (500ft/lbs+) then it might be a cheaper option to have that done versus the fabrication work and new driveline etc you'll need to get with any other option. After all a beefed up TR-3650 is a bolt in option and may be the way to go for the budget street minded. Thanks for your reply but once again I still dont have the answer.

 

From what I could dig up, it seems that Saleen and Roush are using "built" versions of the 3650, done in-house. I know Roush does ALOT of in-house custom fab and design. Also, you have to take in account that the rating on the 3650 is very conservative. It has to be to be used in an OEM application. OEM's design cars to be used as DD's for at least 10 yrs.(avg. lifespan est. for most vehicles) The warranty at Ford is also longer. Ford's drivetrain warranty is 5yrs/50K. Roush is only 3yrs/30K. The average vehicle's lifespan is usually double the warranty. Therefore, Ford is saying that the 2010 can be used as a DD for 10yrs, roughly, before seeing major component failures. Roush is only giving their cars roughly 6 yrs. This shows that although the tranny can handle the higher power, it will not last as long doing so.

 

I have to agree with most of what you except the part about the 3650 being underrated. With CAD cars are being created to spec and that goes for trannies as well and the 3650 is torque rated for 360ft/lbs but remember you need to double that rating to get the "shock rating" which is generally a 4th to 3rd shift and hammering the gas which is the hardest shift on the tranny. The 3650 can be built up for sure, the only concern is that the bell housing is apart of the unit and nobody makes (short of custom builds) a steel bell housing for the 3650. That being said the 3650 is an excellent tranny once it's built up and I recommend going to these guys (http://www.thedrivenman.com/Ford/Tra...ns/05-09k.html) if you're going to do that as they build a 600 rear wheel ft/lb rated 3650 Extreme and they do very, very good work.

I guess we're all just going to have to assume, safely I think, that Saleen and the others are using a built up 3650 in their 5 speed applications. Thanks everyone!

 

I wouldn't put my money on it being THAT much better. Maybe the S281 EXtreme, and the Roush P51 and the like have better built trannys. But the simple Stage 2 or Saleen S281 would probably have nothing other than a stock that supposedly is "better".

But, who knows.

 

If you think they beef up the trannys your kidding yourself. They toss on their short shifters and if your lucky toss in a better clutch thats it.

 

I'm going to have to lean more towards agreeing with you on this one Spike. I'm thinking that these guys are more about making the money than the car so they probably put the stock TR-3650 in their non T-56 cars and call it good. We know the TR-3650 will handle 360ft/lbs so if they put 400ft/lbs to the rear wheel, like they do, and the people who drive them dont run 1/4 miles all day long then they'll probably work out just fine. Probably a good call Spike.