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 Lock, Bead Loc, 6mm Stem, Set of 8

MANLEY Valve Lock, Bead Loc, 6mm Stem, Set of 8

$103.02

Crow Cams Valve Stem Seal Ford 11/32" Viton Umbrella, Single

Crow Cams Valve Stem Seal Ford 11/32" Viton Umbrella, Single

$3.97

MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, 7mm Stem, Each

MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, 7mm Stem, Each

$9.68

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.29 in. OD. Spring, .505 in. ID, 1.27 in. OD, .062 in. Thick, Black, Set of 16

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.29 in. OD. Spring, .505 in. ID, 1.27 in. OD, .062 in. Thick, Black, Set of 16

$188.60

Crow Cams XR8 Conical Valve Springs , Set of 32

Crow Cams XR8 Conical Valve Springs , Set of 32

$711.52

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.34 in. OD. Spring, .52 in. ID, 1.32 in. OD, .15 in. Thick, Black, Set of 8

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.34 in. OD. Spring, .52 in. ID, 1.32 in. OD, .15 in. Thick, Black, Set of 8

$94.30