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1. 4L60E/LS1 Input Drum Reinforcement Sleeve w/Overrun Piston & Modified Steel Piston
2. 4L60E Street/Strip 3-4 Clutch Pack
3. LSSeries/4L60E Pro Street Performance Upgrade 1998 & Up
4. 4L60E Road Race/Super Heavy Duty 3-4 Clutch Pack
5. LS1/4L60E Street/Strip Performance Upgrade 1998 & Up

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Pro-Built Automatics :: 4L60E & LS1 Upgrades :: Overrun 2-3 Shift Valve 4L60E 1993 & Up

Overrun 2-3 Shift Valve 4L60E 1993 & Up
Overrun 2-3 Shift Valve 4L60E 1993 & Up 
This valve from Sonnax and a modification to the valve body will allow you to use D3 to race without the overrun clutches coming on, on the 2-3 shift and robbing 3rd gear apply oil, (possibly resulting in a 2-3 "engine flare") as in all 4L60E's. Now the overrun clutches will be on from the start in D1, D2 and D3 just like in the 700R4, which had no loss of pressure on the 2-3 shift. Now no more clutch apply oil loss on the 2-3 shift. Comes with easy to install instructions and where to drill the valve body. This valve will be an option on all of my rebuild kits except the Pro Street Elite where the valve will be included (mandatory). If you have a 2-3 shift flare in "D3", this will help solve it. A "must" for high horsepower when using the "D" position.

Price: $35.00


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