2009-04-20
- Zf 8hp70 Gear Ratios
Hi folks, New to the forum. Hoping to gain some insight from folks. I have a 2016 Challenger R/T. Bought it new in 2017. Almost right off the bat, the transmission would down shift very harshly when I decelerated, mostly from 2 to 1, and often from 3 to 2 as well. Like, it was so harsh that. For the 8-speed automatic transmission, ZF set out to design and develop an entirely new gear set concept. The result is a revolution in transmission design: a transmission concept with 4 gearsets which requires only 5 shift elements – of which only two are open in any given gear. 8HP70 HIS, 8HP70HIS 1087 014 xxx, 1087014xxx.
The world's first six-speed automatic transmission for passenger cars was introduced to the market by ZF in 2001. The 6HP-family is based on a Lepelletier planetary gear set. An advanced version of these transmissions was launched in 2006. The 2nd generation offers significantly improved customer-relevant features such as reduced fuel consumption, response time and shifting speed. With regard to the increasing requirements especially in reduction of CO2 emissions, a new eight-speed transmission is now under development. The main targets for this transmission family are a further significant reduction in fuel consumption and emissions, good driving performance and state of the art driving comfort. The paper describes the transmission 8HP70, the schematic, main features and major design components. Key figures like transmission weight and size, fuel efficiency benefits and driving performance are shown compared to the 6-speed transmission of the 2nd generation. The 8HP70 transmission offers the possibility of implementing several start-up devices and of integrating different all-wheel drive configurations. Based on a modular system, the 8-speed transmission can be equipped with a variety of hybrid functions. Micro, mild and full hybrid solutions can be implemented without the need of additional installation space. The described technical features meet the demands of future requirements. The new 8HP-family shows that the technology of “conventional” automatic transmissions with torque converter and planetary gear sets still contain a lot of potential. In combination with the known advantages such as market acceptance, cost-benefit ratio, and comfort, this new transmission generation of ZF will mark a milestone in the history of automatic transmission technology for cars, which will serve as a benchmark for other transmission systems.
This new Suncoast 8HP70 rebuild kit is manufactured using Alto G3® Material. G3® is a (non-asbestos) organic based friction material with impregnated carbon graphitic particles. Carbon adds lubricity and high thermal stability to the friction material.
DOI: https://doi.org/10.4271/2009-01-0510
Citation: Scherer, H., Bek, M., and Kilian, S., 'ZF New 8-speed Automatic Transmission 8HP70 - Basic Design and Hybridization-,' SAE Int. J. Engines 2(1):314-326, 2009, https://doi.org/10.4271/2009-01-0510.
Download Citation
Author(s): Heribert Scherer, Manfred Bek, Stefan Kilian
Pages: 13
ISSN: 1946-3936
Also in: Transmission and Driveline, 2009-SP-2249, SAE International Journal of Engines-V118-3, SAE International Journal of Engines-V118-3EJ
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Today we added another revision to our ZF 8HP gearbox tuning, which results in vast improvements in its behaviour and made more room for tuning.
The improvements include several different aspects:
- First of all, now we can adjust torque limits, which makes it possible for us to increase torque with engine tuning
- Secondly, we can also adjust RPM limit to make the engine rev higher
- Next, we can modify shift points to make the ZF 8HP gearbox shift exactly when you want it to shift
- Lastly, we can adjust the speed of shifting for sportier results.
These improvements go hand in hand with our ECU tuning which can give your car more power.
ZF 8HP gearbox tuning is not only for BMW owners. ZF 8HP is used on a number of different vehicles produced by about 20 different manufacturers.
Zf 8hp70 Gear Ratios
Do you want your gearbox to act better? Contact us and see what we can do for you.