3mirrors Valve Spring Compressor for Chevy LS Engines 67605 — 4.8–6.2L Fit, Hardened Steel CNC Machined

3mirrors 67605 Valve Spring Compressor is a bolt-on tool kit designed to safely remove and install valve springs on 4.8–6.2L Chevy LS engines and many compatible GM and select Dodge V8s.

When servicing valve springs on LS-series engines you need a purpose-built, heavy-duty compressor that fits the head bolt pattern and withstands repeated use. The 3mirrors 67605 kit is machined from quality steel, includes hardened fasteners, and is marked for correct orientation to simplify setup. It’s engineered for common LS swaps and refreshes across Camaros, Corvettes, Silverados, CTS-Vs and more, giving DIY mechanics and professional shops a dependable way to change springs without removing the head in most cases.

Which engines and vehicles does this 67605 tool support?

The compressor was made to work with LS-series small-block V8s—specifically 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines—and fits the OE 67605 footprint. It also adapts to many GM passenger cars, trucks and performance models as well as certain Dodge small-blocks when using original bolts. Check your head bolt pattern before use to confirm compatibility.

• Fits LS1, LS2, LS3, LS6 and LSX family heads and OE 67605 locations
• Common vehicle fits: Camaro, Corvette, Trans Am, GTO, G8, CTS-V, Silverado, Sierra, Tahoe, Suburban
• Can be used on Dodge 318/360 (5.2/5.9) only with original bolts retained

How durable and precise is the 3mirrors compressor for repeated garage use?

This kit uses precision CNC machining and hardened steel hardware to resist deformation under repeated clamping. Fasteners are higher-grade (10.9 and 12.9 strength classes) compared with cheaper 8.8 hardware, improving longevity and safety when compressing springs under load.

• Precision CNC-machined T-shaped components marked "TOP" for correct orientation
• Bolts and nuts built from 3/8" steel with higher tensile ratings
• Robust construction intended for shop or enthusiast use, not single-use disposables

What should I know about setup, usage and included parts?

The kit supplies the compressor arms and hardened fasteners but does not include valve springs or retainers. Read the included instructions carefully and use light lubricant on moving contacts to reduce wear and ease operation. Following recommended torque and safety steps prevents damage to valves or springs.

• Package contains T-shaped compressor pieces, bolts, and nuts—springs are excluded
• Components stamped "TOP" for intuitive assembly and correct orientation
• Use lubricant on contact points and keep springs/retainers organized during installation

Who is this for? The 3mirrors 67605 Valve Spring Compressor is built for experienced DIYers and professional mechanics working on GM LS-series engines who want a rugged, accurate tool for valve spring service. If you regularly install performance valve springs, refresh valve train hardware, or perform head work on Camaros, Corvettes, GM trucks or similar vehicles, this kit provides a long-lasting alternative to cheap compressors. If you’re uncertain about compatibility with a specific head or engine variant, verify the OE 67605 bolt locations on your cylinder head or consult a professional before purchase.