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Description:
The PAC-1218 Spring Kit is a drop-in high performance spring kit for all OE LS cylinder heads and is rated for up to .600" lift. This spring kit uses all OE hardware, including seats, retainers, and locks and is 100% drop-in. The PAC-1218s are an ovate beehive spring that has increased loads, rates and frequencies for more aggressive cams. This is a full set of 16 springs.
Specifications:
Number of Springs Per Valve: Single
Outside Diameter of Outer Spring (in): 1.290 in.
Coil Bind Height (in): 1.140 in.
Damper Spring Included: No
Install Load: 130lbs
Install Height: 1.800"
Open Height: 1.175"
Open Load: 318 lbs
Spring Rate (lbs/in): 313 lbs./in.
Inside Diameter of Outer Spring (in): 0.885 in.
Valve Spring Style: Beehive
Manufacturer Part Number:
PAC1218, PAC-1218, PAC-1218-16, 1218, 1218-16
Fitments:
for LS1, LS2, LS3, LS6, LS7, LS9 LSX Engines
1999-2002 Camaro & Firebird
2010-2013 Camaro
1999-2013 Corvette
2004-2006 Pontiac GTO
2004-2007 Cadillac CTS
2008-2009 Pontiac G8
2000-2013 Tahoe, Yukon, Escalade
2003-2009 H2 Hummer
2001-2013 Chevrolet Avlanche
1999-2013 Silverado & Sierra (4.8L, 5.3L, 6.0L)
Please make sure the interchange part number matches the part you are replacing.
Please check our photos and make sure the part shown looks identical to your stock one.
Package list:
16× Valve Spring as picture shows
You will receive exactly what you see on the picture

