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PAC 1333 Solid Roller Dual Valve Springs

PAC Racing

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PAC Racing - Solid Roller Dual Valve Springs - (1333)

The PAC Racing 1333 is the "BIG PAPA" severe duty, small diameter valve spring designed for solid roller camshaft requiring lightweight valvetrain. This spring is used in very high lift, upper range RPM or forced induction engines. Direct replacement for the other round wire 1300 series springs but with more spring rate than even the 1238X for camshafts that have some "big lobes" on them. Will fit most aftermarket cylinder heads with small 1.300" diameter dual spring packages but check the rest of your hardware to be sure. Round wire construction.

1.274” Outside Diameter
0.900" Inside Diameter

0.616" Inside Diameter
No Damper

245# at 1.800”
750# at 1.050”
.750” Max Lift
Coil Bind: 0.971"
94 grams