Sonnax enhanced performance accumulator spring 77704S provides firmer 1-2 shifts for the enthusiast that appreciates quick, positive shift feel in listed GM units. The Sonnax spring design provides performance shift feel, but does not reduce accumulator piston travel. This allows for a firmer - but still cushioned - shift that minimizes shock to the band and shafts.
The Sonnax spring achieves the same effect as the common shop practice of replacing the OE 1-2 accumulator spring with the THM 350 direct accumulator piston spring. The Sonnax spring also may be used as a replacement for the THM 350 direct accumulator piston spring.

More From This Category

MANLEY Valve Spring Retainer, Titanium, 22205 Spring, Each

MANLEY Valve Spring Retainer, Titanium, 22205 Spring, Each

$31.43

COMP Cams Titanium Retainer, 10 Degree, 1.625 in. OD Double Springs, Each

COMP Cams Titanium Retainer, 10 Degree, 1.625 in. OD Double Springs, Each

$61.07

Trick Flow Valve Springs, PAC Racing, Single, 1.437 in. Outside Diameter, 340 lbs./in. Rate, 1.150 in. Coil Bind, Pair

Trick Flow Valve Springs, PAC Racing, Single, 1.437 in. Outside Diameter, 340 lbs./in. Rate, 1.150 in. Coil Bind, Pair

$27.70

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.255 in. OD. Spring, .78 in. ID, 1.25 in. OD, .18 in. Thick, Black, Each

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.255 in. OD. Spring, .78 in. ID, 1.25 in. OD, .18 in. Thick, Black, Each

$11.77

AFR Retainer, Steel 7 degree 1.245 OD x .880 ID x .655 ID, Set of 16

AFR Retainer, Steel 7 degree 1.245 OD x .880 ID x .655 ID, Set of 16

$128.00

MANLEY Valve Spring Retainer, Steel, 7 Degree, 1.290 in. OD, LT4 INT, Each

MANLEY Valve Spring Retainer, Steel, 7 Degree, 1.290 in. OD, LT4 INT, Each

$70.43