What type of valve locks do these retainers use?

These Manley valve spring retainers are designed to be used with 7-degree valve locks. You will need to use either Manley part number 13098 or the factory Chevrolet LS valve locks.

What is the benefit of using titanium retainers?

Titanium is a strong yet lightweight material. Using these titanium retainers helps reduce the overall mass in your valvetrain, which can allow your engine to achieve higher RPMs more reliably and improve valve control.

Are these retainers compatible with all LS engines?

These retainers are specifically designed for LS1 and LT4 engines with 8mm valve stems. While they fit many Corvettes from 1985-2004, it's always best to confirm your specific engine and valve stem diameter.

Specifications

Brand: Manley Performance
Part #: 23623-16
UPC: 807298028194

Manley Spring Retainer, RET-TI 1.290 7 DEG +.050 LS1/LT4 EXH

Name: Manley Spring Retainer, RET-TI 1.290 7 DEG +.050 LS1/LT4 EXH
Brand: Manley Performance
SKU: manley-performance-manley-spring-retainer-ret-ti-1-290-7-deg-050-ls1-lt4-exh-t14-881371
Price: 367.72 USD
Availability: BackOrder

$367.72

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1985-2004 Chevrolet Corvette. Manley titanium valve spring retainers reduce valvetrain weight for improved RPM potential.

Key Features

Fits 1985-2004 Chevrolet Corvette.
Made from strong 6AL-4V titanium to reduce valvetrain mass.
CNC machined to exacting tolerances for reliable performance.
Designed for LS1 and LT4 engines with 8mm valve stems.
Works with 7-degree valve locks.
Each retainer weighs approximately 10.0 grams.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're rebuilding the top end of your 1985-2004 Chevrolet Corvette, especially for higher RPM use, you'll want to pay attention to the valvetrain. These Manley valve spring retainers are made from 6AL-4V titanium, which is a strong but lightweight material. This helps reduce the overall mass in your valvetrain. Less weight means your engine can potentially spin faster and more reliably at higher RPMs, giving you better control over the valves.

Manley uses CAD design and CNC machining to make these retainers with tight tolerances. They're designed to work with 7-degree valve locks and are specifically made for LS1 and LT4 engines with 8mm valve stems. You'll need to use either Manley's part number 13098 or the factory Chevrolet LS valve locks with these retainers. Each retainer weighs about 10.0 grams, which is a notable reduction compared to stock components.