Product Description
PAC Racing Springs PAC-1218 LS Ovate Beehive Valve Springs - Set of 16
1.290" Single Beehive Springs | .600" Lift Rated | Drop-In for OE LS Cylinder Heads Using Factory Hardware
Upgrade compatible OE LS cylinder heads with PAC Racing Springs PAC-1218 ovate beehive valve springs. This complete set of sixteen single springs is designed as a drop-in high-performance spring upgrade for LS engines using OE valve spring seats, retainers, and locks. Rated for camshafts with up to .600" valve lift, PAC-1218 springs provide increased load, rate, and frequency characteristics for more aggressive LS camshaft combinations while retaining a straightforward installation with factory-style hardware.
Key Features & Benefits
- Complete Set of 16 Valve Springs: Includes sixteen PAC-1218 valve springs, providing the required quantity to service all valve locations on one compatible LS V8 engine.
- .600" Lift Rated: Designed for compatible LS camshaft combinations with up to .600" valve lift when installed and verified according to the listed specifications.
- Drop-In OE LS Cylinder Head Design: Designed for all OE LS cylinder heads while reusing compatible factory valve spring seats, retainers, and locks.
- Ovate Beehive Spring Profile: PAC-1218 springs use an ovate beehive design with increased spring loads, rates, and frequencies for more aggressive LS camshaft profiles.
- Single Spring Configuration: Uses one beehive valve spring per valve position without a damper spring, helping maintain a clean and straightforward OE-style spring package.
Kit Includes
- (16) PAC Racing Springs PAC-1218 ovate beehive valve springs
Specs
- Brand: PAC Racing Springs
- Part Number: PAC-1218
- Quantity: Set of 16 springs
- Valve Spring Style: Ovate beehive
- Springs Per Valve: Single
- Outside Diameter: 1.290"
- Inside Diameter: 0.885"
- Coil Bind Height: 1.140"
- Install Height: 1.800"
- Install Load: 130 lbs
- Open Height: 1.175"
- Open Load: 318 lbs
- Spring Rate: 313 lbs./in.
- Damper Spring Included: No
- Maximum Rated Valve Lift: .600"
Notes
- OE Hardware Reused: This spring kit is designed to use compatible OE valve spring seats, retainers, and locks. Those components are not included unless separately stated.
- Spring Setup Must Be Verified: Confirm installed height, seat pressure, open pressure, coil-bind clearance, retainer-to-seal clearance, valve guide clearance, and total valve lift during final assembly.
- Camshaft Compatibility: Verify your camshaft lift, rocker ratio, cylinder head configuration, and complete valvetrain geometry before selecting valve springs.
- Professional Installation Recommended: Valve spring installation should be completed using proper assembly procedures and verified by an experienced engine builder or qualified technician.
Key Fitments
- PAC-1218 Drop-In Beehive Valve Spring Kit for all LS Engines - .600" Lift Rated
- 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.
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Exactly what I ordered
Short on time and behind schedule Michigan Motorsports saved the day!
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PAC RACING SPRINGS PAC-1218
Necessary part of the build to run a big single turbo on the LQ4. Trust PAC1218's and of course an easy install and great quality of part.
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Good product Good price
Good price fast shipping
