NV3500 Drill Mod...Anyone Heard Of It?

[Crash]

http://youtu.be/SWD8zeyjNhU?t=6m20s

I know it's for a F body but the concept should be the same.

 

[TylerZ281500]

so whatd that even do?

 

[Crash]

My understanding is that you can get the clutch disengaged faster so you can shift quicker.

 

[TylerZ281500]

ive been around alot of t56 fbodys and never heard of that at all tbh

 

[skylark]

ive been around alot of t56 fbodys and never heard of that at all tbh

My understanding is that GM did that as a crutch for their manual transmissions. It is the stick shift version of torque management. If you slow down the clutch just a little bit then it isn't so hard on the transmission.

 

[ccreddell]

Skylark is right. What the restriction does is slow the fluid coming back to the MC. Which makes speed shifts almost impossible. Also, at higher RPMs, the pressure plate itself stays energized from the centrifigul force and only releases after the engine gets back down to a lower RPM. At least that's what mine did. The Hurst shifter was amazing-I loved it. But I still couldn't speed shifts like I would a Muncie with a Hurst shifter.

EDIT: as a side note, doing the drill mod will most likely speed the demise of your 5-speed. They weren't the strongest tranny in the first place.

 

[98_k1500]

As a side note, doing the drill mod will most likely speed the demise of your 5-speed. They weren't the strongest tranny in the first place.

Unless you have a NV4500 like me

 

[TylerZ281500]

i mean i can see that working, i can also see where quicker shifting would work in a t56 or t5 or such in a car but not so much a truck, but like stated it will probably kill it a bit faster.