CD009 6-Speed Manual Transmission for 350Z/G35/370Z/G37 | Upgraded Synchros | 700whp Rated | VQ35/37 & Swap Ready

The CD009 is Nissan’s final and strongest revision of the FS6R31A 6-speed manual used in the Z33 and V35 chassis, and it’s the go-to gearbox for VQ35/37 builds, LS swaps, 2JZ swaps, and drift cars because it fixes the weak synchros and gearset issues that plagued earlier CD001-CD008 units, and the CD009 was factory installed in 2005-2006 350Z and 2005-2007 G35, but it’s fully backward compatible with 2003-2004 350Z/G35 and forward compatible with 370Z/G37 with the right bellhousing, clutch, and driveshaft combo, and the biggest upgrade is the revised 1st-4th triple-cone synchros and hardened gears that handle high-rpm shifts and shock loads way better than early CD transmissions that would grind 2nd or 3rd under abuse, and the input shaft, countershaft, and mainshaft all use updated metallurgy so the CD009 is consistently rated for 600-700whp with proper clutch and mounts, and guys push them to 800-900whp in drag and drift with good fluid and trans coolers, and the gear ratios are aggressive for NA and turbo VQs with a 3.794 1st, 2.324 2nd, 1.624 3rd, 1.271 4th, 1.000 5th, and 0.794 6th, which keeps you in powerband on track and gives usable highway cruise with 3.5 or 3.7 rear diffs, and the case is aluminum with integrated bellhousing on early VQ versions and separate bellhousing on HR/VHR, so you can swap bellhousings to run it behind VQ35DE, VQ35HR, VQ37VHR, or adapt it to RB, SR, 2JZ, LS, K-series, and more with off-the-shelf adapter plates, and the shifter location is perfect for Z33/Z34/V35/V36 chassis and it sits right where it should in S-chassis swaps too, and the transmission uses a 24-spline output and 350mm shifter distance, and it takes standard Nissan 6-speed clutch setups or twin/triple disc if you’re making power, and the CD009 is known for surviving clutch kicks, flat-foot shifting, and high-rpm banging where T56s break and R154s grind, and it’s serviceable with rebuild kits, synchro kits, and gearsets still available, and used CD009s are the most sought-after because they don’t need the $1500+ synchro rebuild that CD001-CD007 usually do, and you can identify a real CD009 by the “CD#” stamp on the bellhousing and the production date code, and it’s the foundation for serious VQ builds, street/drift cars, and swap projects that need a strong, cheap, and readily available 6-speed that shifts smooth at 8000rpm, and whether you’re replacing a blown early CD, upgrading your HR/VHR, or starting a swap, the CD009 is the last manual Nissan made that balances strength, gearing, and parts availability without going to a sequential or dogbox.