I see there is a shift kit on 3800 performance web site for $100

What is the transmission model for my 3.9 liter monte?

How much of a difference will a shift kit make like overall and on the track time wise?

I know it consist of valves to allow different pressure

additional info on this would be appreciative, ty

 

http://www.3800performance.com/Merch...ct_Code=TEP-SK

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.)

 

$100 is rape for a shift kit IMO. Most shift kits are just a filter/gasket (can be bought at any local store)- and 4 small metal spacers (sourced through some hardware provider- they've very basic). The better kits, like the one above, include springs too- but those are fairly cheap through GM (the part #'s and prices were post on clubgp awhile back).

Really, just using the larger of the spacers can make the shift kit extremely rough as is, without using the stiffer springs, so size them to your liking. Thats all these 'adjustable' kits do is come with a couple different heights of spacer.

 

I installed the kit from 3800.com? (spacers and instructions) set it to their 2nd step cause of the line pressure boost from the zzp pcm, nice crisp shifts but not slamming, also change the filter (your already there, be careful with the filter tube seal installation (easy, just be careful) make sure the 3 transfer tubes to the accumulator housing are fully seated when you put it back together (the instructions explain it) and switch to Dexron VI while your there (2 gal.) full synthetic, runs cooler, less wear

Aaron

 

Sorry to bring this post back from the dead, but I was wondering what is the transmission model for the 3.9L engine?

 

4T65E for the n/a v6's (3.5, 3.9, 3.4, 3.8 etc) and the 4T65E-HD (heavy duty) for the v8 LS4s and s/c 3800s.