Sonnax 77777L-K Accumulator Valve Train Kit 200-4R, 4L60, 4L60-E

Brand: SonnaxOther Part Number: S74741EAKType: Valve Body ComponentsItems Included: Accumulator Valve Train KitManufacturer Part Number: 77777L-KUniversal Fitment: YesVintage Part: NoPerformance Part: Yes 200-4R, 4L60, 4L60-E Accumulator Valve Train KitPart No. 77777L-K Fits "L" version valve trains in light/medium weight vehicles only. Fits 4L60 '87-later auxiliary valve body styles only. Valve dia. = .330". Vehicles with a GM 200-4R, 700-R4, or 4L60-E transmission can experience 1-2 light throttle abrupt or bang shifts, especially when using the 093 Corvette or 553 2nd apply servo pistons. The traditional solution is to make the servo piston apply diameter smaller, however this limits the 2-4 band life. This shift problem can occur due to sleeve wear allowing torque signal and/or accumulator pressure leakage, or when the accumulator valve is too large for the application, resulting in too much pressure on the 2-4 band. This valve train ha