PAC Racing 1220 Beehive Valve Spring Kit - (#BB3S)
This kit is designed for most factory, unmodified big block Chevrolet cylinder heads with hydraulic roller camshaft profiles. This is a replacement for the large and heavy dual springs that most big block heads come equipped with. Some OEM cylinder heads may require the spring pockets to be machined to spring locator fitment. Locator has a .630" inside diameter to clear over the stock guides. Verify before assembly.
VALVE SPRING KIT CONTENTS:
PAC Racing 1220 Beehive Springs
Proprietary Ovate Wire
155# at 1.880" Installed Height
377# at 1.280" Open pressure
.600” Lift Capable
Chromemoly Steel 3/8" Stem Spring Retainers
Hardened and Machined 3/8" Valve Locks
Hardened and Machined Valve Spring Locators
Direct Replacement Valve Seals - 3/8" OEM configuration
NOTE: Verification of all spring pocket and installed height parameters is required.
PART NUMBER: PAC-1220-BB3S