PAC Racing - LSX Solid Roller Dual Valve Springs (1238X)

The PAC Racing 1237X is an extreme duty valve spring designed for solid roller camshaft requiring lightweight LSx style valvetrain. This spring is used in very high lift, upper range RPM or forced induction engines. Direct replacement for the other round wire 120x series springs but with more spring rate than even the 1208X 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.

DIMENSIONS:
1.274” Outside Diameter 
0.900" Inside Diameter 

0.630" Inside Diameter
No Damper

SPECS: 
200# at 1.800” 
585# at 1.050” 
.700” Max Lift 
Coil Bind: 1.045" 
94 grams



Kit includes:

PAC 1237x Springs

PAC R432 Titanium Retainers

PAC S128 Locators

PAC L8142 locks


NO SEALS ARE INCLUDED IN THIS KIT

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PAC 1237x Valve Spring Kit With Titanium Retainers - .700 lift

  • Product Code: PAC1237xKIT
  • Availability: In Stock
  • $649.99

  • Ex Tax: $649.99