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Storefront >> Transmission >> Thrasher 4T65E Shift Kit


Thrasher 4T65E Shift Kit Price: $99.99
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APPLICATIONS:
- 1997- 2006 Grand Prix GTP
- 1998-2006 Grand Prix GT, GT1, GT2
- 1997-2004 Regal GS
- 1998-2004 Regal LS
- 1998-2005 Monte Carlo (3.8L)
- 1998-2005 Impala (3.8L)
- 1997-current cars with 4T65E transmission
- 1997-current cars with 4T65E-HD transmission

This kit allows the tailoring of your shift feel to the way YOU like it. You select the improvement desired modification level from mild (noticeable improvement) to wild (“bang-screech”, our personal favorite:-) that best suits your taste and driving style. This kit can be installed in a driveway by any competent shadetree mechanic in about 1 hour with hand tools, jack stands, drip pan (for tranny fluid), and a torque wrench. Detailed instructions are included.

The kit uses a dual spring setup (similar to a valve spring) and precision height shims which are placed inside the 1-2 and 2-3 accumulators. The accumulators are piston and spring assemblies located inside the valve body of the transmission which control the rate at which fluid pressure gets applied to the clutch packs when shifting gears. The valve body is located above the pan on the bottom of the transmission. (While you're in there you might as well change the filter.) Slow pressure rise means a soft shift. A rapid rise gives a quick positive shift yielding minimal slip.

Factors such as spring pressure, accumulator cylinder volume, piston travel, pump capacity, and line pressure all interact to yield shift time and slip. By controlling several of these parameters simultaneously the shift quality can be altered to a more acceptable level.

NOTES:
- This kit will NOT work in a 4T60 transmission. The trans is very similar to the 4T65E, but not close enough.

- Clutch life is improved because of the reduced shift time. Anytime you are between gears you are slipping the clutches until you reach the point where they lockup. This wears the clutches and generates heat. Less time on the shift = less clutch wear and heat buildup.

- The kit will also work with the standard version of the 4T65E. (Supercharged cars get a HD version.)




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