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This high performance chrome vanadium spring and damper assemby was developed for heavy-duty L88, and ZL1, and LS7 engines. The outer coil diameter is 1.487". The spring yields 116 pounds seat pressure at an installed height of 1.88". Open pressure is 310 pounds at .560 valve lift. This spring coil binds at 1.20". It is rated at 317 pounds/inch. This kit includes 16 springs of P/N 3916164, and use P/N 3916164 for single spring replacement. Use steel retainer P/N 3879613.
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