Tireman28 Posted May 5, 2018 Share Posted May 5, 2018 I drive a round track race car and I wanna know if I can run a 6 speed transmission in my car. And if so what did I need for the swap 1 Quote Link to comment Share on other sites More sharing options...
el_freddo Posted May 6, 2018 Share Posted May 6, 2018 You can. As for specifics I'm not up with those specs to fit it though. Cheers Bennie Quote Link to comment Share on other sites More sharing options...
Tireman28 Posted May 6, 2018 Author Share Posted May 6, 2018 Cmon bro, I need some serious help. Money is not really a problem. I just need some guidance Quote Link to comment Share on other sites More sharing options...
matt167 Posted May 6, 2018 Share Posted May 6, 2018 The question is why. If you only run 3rd and 4th. The 6spd is a waste. Gear ratio's are very close for 4th- 5th in a 6spd to 3rd -4th in a 5spd This is for the WRX 5spd. Your 4.11 RS/ Forester transmission has a bit different gear ratio but you could save a TON by just going with a WRX 5spd Quote Link to comment Share on other sites More sharing options...
Tireman28 Posted May 6, 2018 Author Share Posted May 6, 2018 I’m good w that. What year do I need and what ratio? Quote Link to comment Share on other sites More sharing options...
matt167 Posted May 6, 2018 Share Posted May 6, 2018 2002-2007. Clutch systems changed in 2006 wrx back to a push style cluch which is what the RS trans is, but with a different slave cylinder for a 2002-2005 WRX, you can use either transmission The front diff is 3.90 ratio, and with the 1.1:1 center diff, the rear diff is 3.54 Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 6, 2018 Share Posted May 6, 2018 6 speed swaps are getting fairly cheap. You can use a 04/05 transmission with an R160 3.90 diff and the front driveshaft from an automatic model Impreza. You will need 05+ WRX front axles, automatic driveshaft, clutch, flywheel, and slave cylinder. Also the DCCD Pro controller if you want to adjust the front/rear differential bias. We do this swap all the time to the WRX's. It's not really any different on a non-turbo. GD Quote Link to comment Share on other sites More sharing options...
matt167 Posted May 6, 2018 Share Posted May 6, 2018 6 speed swaps are getting fairly cheap. You can use a 04/05 transmission with an R160 3.90 diff and the front driveshaft from an automatic model Impreza. You will need 05+ WRX front axles, automatic driveshaft, clutch, flywheel, and slave cylinder. Also the DCCD Pro controller if you want to adjust the front/rear differential bias. We do this swap all the time to the WRX's. It's not really any different on a non-turbo. GD He is limited to 2wd ( frt or rear ), and shifts between 2 gears. A 6spd is a waste of money in this case Quote Link to comment Share on other sites More sharing options...
Tireman28 Posted May 6, 2018 Author Share Posted May 6, 2018 I have to run 2wd. And prefer front because of the handling is way better and I can set my stagger up better that way. I was lookin at the 3.90 gear and using a msd dis 2 to increase my limiter to 7300 Quote Link to comment Share on other sites More sharing options...
el_freddo Posted May 6, 2018 Share Posted May 6, 2018 You'll also add a tonne of weight with the 6 speed. Not worth it if you're not going to be leaning heavily on the box, which is what this box seems to be designed for. CheersBennie Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 7, 2018 Share Posted May 7, 2018 The six speed is not that much heavier. I've removed and installed plenty of them. Stick with the 5 if you are doing FWD though. WRX trans is 3.90 on the front diff. GD 1 Quote Link to comment Share on other sites More sharing options...
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