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  1. WK1 Troubleshooting / Problems Discussion / Dealer
    My 2006 SRT8 with 65,000 miles hard shifts between 1st and 2 gear, under normal load. No check lights. Transmission shop diagnosed internal issue, likely needing full rebuild. I learned that the transmission unit in this car was manufactured by Mercedes. Questions 1) Has anyone had this issue...
  2. WK1 SRT8 General Discussion
    Just curious if anybody has ever swapped one of the new 8 speeds into the Wk1 body SRT8 Jeep?
  3. WK2 SRT8 Troubleshooting / Problems Discussion / D
    Hey guys, Anyone else notice a slight whistle as their transmission rolls through the gears at a moderate acceleration? With my window down, I can hear a little bit of a whistle-type noise that's in sync with the shifts. Just curious if that's the normal sound, or if there's something up with...
  4. WK1 SRT8 General Discussion
    I just bought a 2010 SRT about 2 months ago and have noticed my shifts at WOT are around 6400-6500 rpm when I’m in D. I know that’s higher than stock redline but was just curious if there was a way to tell by looking at the actual tcm or if there was a different way. Thanks for any help
  5. WK1 Suspension / Driveline Discussion
    I finished getting the Jeep back together after having the engine rebuilt due to a broken piston. I did all the R&R in my garage, but outsourced the engine rebuild. I installed the ATI Flexplate instead of the OEM, but kept the stock converter. We’ve put over 400 miles on the Jeep since I got...
  6. WK2 SRT8 General Discussion
    Hey guys! New to this site, I just bought a 2016 SRT, and I'm looking into some mods for it. Before I go gung-ho and buy a bunch of go-fast parts I'd like to know how much power our little trans could take. I bought it used from a dealership and I think it might have some modifications already...
  7. WK2 SRT8 Troubleshooting / Problems Discussion / D
    I bought a used 14 SRT with roughly 75k miles on it. the test drive it was great. I had about an hour and 20 min drive home. I got about 15 min away and the transmission started shifting weird and the temp was bouncing between 270 to 280. After getting home I let it cool and drove it around the...
  8. WK1 Troubleshooting / Problems Discussion / Dealer
    Hey guys. New member here. Own 2 jeep, a 2006 srt and an 08 wrangler unlimited. Love molar! The issue I'm having is my srt. 100k on the od and basically stock. Trinity with can tune installed. Here's the issue When driving normally it would shift from 1 to 2 at 3k rpm. Even with a very slow...
  9. WK1 SRT8 General Discussion
    Looking for some advice on building the bottom. I have a procharger P1 with the 3.4 pulley. I'm wanting to upgrade the transmission just for the piece of mind. What else do you guys recommend upgrading? I plan on addining a little more power after the upgrade of the transmission with tinkering...
  10. WK1 Troubleshooting / Problems Discussion / Dealer
    Trans did some weird stuff just before my son was born two weeks ago...driving home from work a bunch of lights came on and through a few codes... p0710 trans fluid temp sensor (something about high and low voltage) and U0404. the strange thing is i got it back checked the fluid...fluid level...
  11. Parts For Sale/Wanted
    Hey SRT world, my 2007 SRT's tranny went out today and the dealer wants 4 grand! I know that I can get the job done for less. I recently ran across a GC SRT8 transmission on ebay for 1350$. Is this a good price? Does anyone out there know where I can get a good tranny to bring my baby back to...
  12. WK1 General Performance Discussion
    Anyone every try mounting a 4l80 or 4l60? Just off price or a built trans alone...I think there would be around 2-3k left over compared to the built NAG1's (of courese tuning, custom drive shaft, prob custom bellhousing etc would offset). I'm not taking anything away from SHR or Paramount...
  13. Parts For Sale/Wanted
    NAG-1 Transmission with Torque Converter Email this page to a friend Horse Power: 1100 (1100 ft-lbs Torque) Converter: Custom Stalled, CNC Machine, Alloy Steel Stator with Heavy Duty Torrington Bearing with Custom Increased Capacity Lock-Up Clutch Assembly Stall: 2200-4000 The Gearstar...
  14. WK1 SRT8 General Discussion
    Hi Guys! This may seem like a total "Noob Question", but can someone PLEASE tell me where to find the Transmission Fluid dip stick in order to check the level of the transmission fluid or "top it off"? Thanks! SDX
  15. Vendor Deals
    Hey guys and gals, we've put together some cool combos for those of you who are looking to build up you Jeeps as well as saving some big money along the way! This parts package that we're going to offer is pretty much an A-Z package without tapping into the motor at all. We just sold a few...
  16. WK2 SRT8 General Discussion
    I was all set to pull the trigger on a 2012, when my friend who is very knowledgeable about this stuff informed me that a new 8-speed transmission is coming sometime in the future. What are the odds that the 8-speed will make it into the 2013 SRT8, and is it really worth waiting for?
  17. WK1 Suspension / Driveline Discussion
    Hello there I own a 07 SRT-8. I recently purchased a bwoody CAI, Kooks headers, Borla type-s catback exhaust, billet tech catch can and am looking at getting a cutsom tune from Toona once I get everything installed (Hey it's a start :P). I am wondering at what point a guy needs to start worrying...
  18. WK1 SRT8 General Discussion
    Hey guys, I know it is probably on here somewhere but I am having the toughest time finding step by step directions on how to drain and refill the transmission fluid. I am very confident in my abilities as I have done the transfer case and axle's..etc. But I remember under warranty having the...
  19. WK1 Tuning/CMR/Dyno/DataLogging/Gauges
    I'm about to buy the mopar tcm and I have a few questions you guys could probably clear up. First, could I get Johan to raise my shift points in a custom tune with it? If not I'm taking my beast to LPM here in Houston and I was wondering if they could probably raise them. Also what are you...
  20. WK1 Troubleshooting / Problems Discussion / Dealer
    Today and on one previous occassion, while doing a very aggressive launch I heard a metalic grinding like sound just before shifts. At part throttle nothing-just smooth shifts. Tranny fluid was checked today and all is good. Drove around for about 20 min and tried another launch and nothing.
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