Dual Drag Race Valve Spring

PAC-1370 Dual Drag Race Valve Spring

PAC-1370
Regular price
$41.84
Sale price
$41.84
Quantity must be 1 or more

Drag Race 1300 Series Valve Spring 1.550 Dual - 1.100 lift

Pro- Stock - Top Fuel Dragster - Top Fuel Funny Car - Top Alcohol Funny Car - ProMod

1300 Series Processing Improves Fatigue Life, which enhances the longevity against premature spring failures.  1300 Series processing involves REM polishing, and Nano Peen, a micro shot peening done to the surface. 

All 1300 series springs come with an ID chamfer to improve clearance on the radius of the spring Retainer.

SPRING SPECS

  • 1.550 OD
  • ID Outer- 1.065"
  • ID Inner-0.740"
  • Installed 2.400" @ 513#
  • Open 1.300" @ 1433#
  • Max Lift 1.100
  • Coil Bind- 1.230
  • Coil Bind Clearance 0.070"
  • 836 #/in Rate