The only woven material is in the torque converters for the lockup clutch. Borg Warner made the original High Energy "green" friction material and is factory issue friction material in the 4L60E for the 2-4 band and 3-4 clutches. Even when slipping badly they handle heat much better than standard frictions. I like the Alto red lining for certain apps but doesnt seem to have the longevity in trade off for better bite and wont take slippage too well as it tends to burn easy if the trans isnt set up right. The HE friction material takes quite a bit of abuse though I found it doesnt bite as well as the Red lining. It was a great addition for OE use as it can provide very high reliability with a smooth shift. Borg Warner came out with a thinner 3-4 friction for performance use and when set up properly you can go from the factory 6 frictions to 9 frictions in this pack and it makes a huge difference in shift quickness as this has always been the weak link in those transmissions. The Raybestos Z-pack uses single sided friction plates like stock 4T65E 3rd frictions and the advantage is to allow for much better heat dissappation. I have never used these setups as I have never had a problem with the BW frictions so I dont have any experience with them.
