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PAC Racing Valve Spring Shims

To help achieve the correct, and critical, valve spring installed height for your project, use PAC Racing valve spring shims. These hardened spring shims are available in a wide variety of inside diameters, outside diameters, and thicknesses to best suit your engine's needs.

5.0 out of 5 stars ( 9 )

$1.98

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$2.96

PAC Racing Valve Spring Seats and Cups

PAC Racing valve spring seats and cups are a great way to prevent dancing springs, which would tear up your aluminum heads. High performance racing engines place extreme pressure on the springs. These retainers are essential for use on aluminum heads. They fit the inside or outside diameter of the springs, preventing spring seat movement.

4.5 out of 5 stars ( 8 )

$5.73

PAC Racing Valve Locks

PAC Racing valve locks provide a single groove, steel, machined performer for your valvetrain needs.

4.5 out of 5 stars ( 8 )

$5.65

PAC Racing 300 Series Valve Spring Retainers

Expected motor life has increased greatly through the years, but anything with moving parts is susceptible to wear and will eventually need rebuilt. PAC Racing 300 Series valve spring retainers are made from 4140 aerospace grade chromoly steel, making them an excellent choice for stock to slightly modified rebuilds. PAC does their own in-house manufacturing, allowing them to build strength into these units. They are heat-treated for solid wear characteristics and to raise the tensile strength, and for a rust-free finish, they apply black oxide coatings. Into every engine a little work must go; make certain you use the right parts for your stock to slightly modified build with PAC Racing 300 Series valve spring retainers.

4.67 out of 5 stars ( 9 )

$5.65

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$5.92

PAC Racing Hot Rod Series Valve Springs

PAC Racing Hot Rod Series valve springs offer the engine and hot rod builder a mild upgrade or replacement for their hot rod. They are available in a variety of spring rates and diameters to accommodate your specific engine and camshaft profile.

1.0 out of 5 stars ( 1 )

$9.29

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$9.50

Clearance

PAC Racing 600 Series Valve Spring Retainers

PAC Racing 600 Series valve spring retainers are the latest developments from PAC Racing Springs. These retainers feature ultra-lightweight designs from proprietary valve spring-type alloys. PAC Racing's sophisticated processing, such as micro-polishing and Nano Peen technology, are used to enhance retainer life. The high hardness of the steel provides higher wear resistance properties to offer superior abrasion resistance and improved fatigue strength, while also reducing weight. PAC Racing 600 Series valve spring come with a reduced step and need to be combined with a matching seat (where applicable) to optimize the performance of the valvetrain.

Not Yet Reviewed

$26.59

$9.50

Clearance

PAC Racing 1200 Series Valve Springs

PAC Racing 1200 Series valve springs are great as replacement parts--or for pushing above and beyond the performance of OEM engines. Select them when you're upgrading camshafts or doing engine rebuilds. The 1200 Series use a premium alloy that outperforms automotive industry standards; and PAC Racing processes the alloy to aerospace shot-peening standards to achieve superior fatigue dependability. This ensures that the springs maintain the load needed to withstand rigors of both street and mild racing applications.

4.9 out of 5 stars ( 20 )

$19.22

$9.50