Valvetrain

True Roller Timing Set Chevrolet LS1 -- 327 (5.3T), 346 (5.7G), 366 (6.0U) -- 1998 UP

The CNC-machined cam gear has nine crank sprocket keyways for zero and +/- 2°, 4°,6°, or 8° timing adjustments. The timing marks are laser-etched.

SPR-549-16 - 1.645 Triple Springs 375 LBS @ 2.200 Open Pressure: 1064 LBS @ 1.200 Coil Bind: 1.130 Max Lift: 1.000 16/pkg

Specifications Part# SPR-549-16 Mass (g) 183.0 Outer Spring I.D. (in) 1.195 Outer Spring O.D. (in) 1.645 Middle Spring I.D. (in) 0.871 Inside Spring I.D. (in) 0.635 Install Load (LB) 385 Install Height (in) 2.200 Open Load (LB) 1064 ...

SPR-548-16 1.645 Triple Spring -332 LBS @ 2.100Open Pressure: 950 LBS @ 1.200 Coil Bind: 1.130 Max Lift: .900 16/pkg

Specifications Part# SPR-548-16 Mass (g) 183.0 Outer Spring I.D. (in) 1.195 Outer Spring O.D. (in) 1.645 Middle Spring I.D. (in) 0.871 Inside Spring I.D. (in) 0.635 Install Load (LB) 332 Install Height (in) 2.100 Open Load (LB) 950 ...

SPR-547-16 - 1.645 Triple Springs 290 LBS @ 2.070 Open Pressure: 835 LBS @ 1.270 Coil Bind: 1.130 Max Lift: .800 16/pkg

Specifications Part# SPR-547-16 Mass (g) 183.0 Outer Spring I.D. (in) 1.195 Outer Spring O.D. (in) 1.645 Middle Spring I.D. (in) 0.871 Inside Spring I.D. (in) 0.635 Install Load (LB) 290 Install Height (in) 2.070 Open Load (LB) 835 ...

SPR-428-16 - 1.625 Dual Springs - 280 LBS @ 2.100 Open Pressure: 847 LBS @ 1.150 Coil Bind: 1.100 Max Lift: .900 16/pkg

  Specifications Part# SPR-428-16 Mass (g) 152.0 Outer Spring I.D. (in) 1.175 Outer Spring O.D. (in) 1.625 Middle Spring I.D. (in) N/A Inside Spring I.D. (in) 0.851 Install Load (LB) 280 Install Height (in) 2.100 Open Load (LB)...

SPR-325-16 1.550 Dual Springs - 250 LBS @ 2.000 Open Pressure: 765 LBS @ 1.200 Coil Bind: 1.150 Max Lift: .800 16/pkg

  Specifications Part# SPR-325-16 Mass (g) 152.0 Outer Spring I.D. (in) 1.100 Outer Spring O.D. (in) 1.550 Middle Spring I.D. (in) N/A Inside Spring I.D. (in) 0.788 Install Load (LB) 250 Install Height (in) 2.000 Open Load (LB)...

SPR-424-16 - 1.625 Dual Springs - 275 LBS @ 2.000 Open Pressure: 810 LBS @ 1.150 Coil Bind: 1.100 Max Lift: .850 16/pkg

  Dual Drag Race Spring - Bracket Race applications Specifications Part# SPR-424-16 Mass (g) 152.0 Outer Spring I.D. (in) 1.175 Outer Spring O.D. (in) 1.625 Middle Spring I.D. (in) N/A Inside Spring I.D. (in) 0.851 Install Load...

11/32 Teflon P.C. Valve Seals .530 x .343 Stem 16pcs

11/32 Teflon P.C. Valve Seals .530 x .343 Stem 16pcs Teflon P.C. Seals have a spring loaded wiper to remove excess oil Clay Smith Performance Valve Guide Seals are manufactured from premium materials and designed to LAST!

1.735" OD to 1.550" ID Spring Cups (16pcs)

Clay Smith designed this Spring Cup for applications that ran a Solid Roller or equivalent and decided to down size back to a flat tappet or Hydraulic Roller set up and has gone back to a Smaller Diameter spring.  1.735" OD x 1.550" ID Spring OD x ...

1.735" OD to 1.450" ID Spring Cups (16pcs)

Clay Smith designed this Spring Cup for applications that ran a Solid Roller or equivalent and decided to down size back to a flat tappet or Hydraulic Roller set up and has gone back to a Smaller Diameter spring.  1.735" OD x 1.450" ID Spring OD x ...

1.625 Spring Cups (16pcs)

1.625 Spring OD x .710 Guide ID .145 Wall Height x .060 Thick - 16 pcs Clay Smith recommends the use of Spring cups on all cylinder heads. They not only protect the head and shim, but also locate and align the spring. Maintaining correct spring,...

1.550 Smog Rotators Spring Cups (8pcs)

 1.550 Smog Rotators replacement Spring Cups were designed to eliminate the rotators on the late model Big Block Chevrolet cylinder heads  1.740" OD x 1.550"ID Spring Diameter x.710 Guide ID x .130 Wall Height .300 Thick Black Oxide ( 8...