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Gwatney Performance Camshaft - L99 - VVT - SS3 - GPI-SS3VVT-LS cam: specs, price & owner results
| Spec | Value |
|---|---|
| Part number | GPI-SS3VVT-LS |
| Engine | Gen III/Gen IV LS |
| Application | NATURALLY ASPIRATED |
| Style | HYDRAULIC ROLLER |
| Cam bolt | SINGLE BOLT |
| Price | $425 (Brian Tooley Racing, 2026-09-29) |
Parts to install it: cam bolt (single-bolt); 7.400 in. pushrods (hardened; 7.400 in. is stock length, so measure first); timing cover gaskets (the front cover comes off to change the cam); timing chain (replace it on a high-mileage engine or with a big cam). More: LS cam swap guide.
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Check current price at Brian Tooley Racing
- Tune: Aftermarket cams need idle, fuel, spark and torque-model changes.
- AFM engines: PCM must be recalibrated to stop commanding deactivation.
- Converter (automatics): 3600+ rpm converter required
- Cam gear: Single bolt
Installing it? Follow our LS cam swap guide (Gen III and Gen IV, any chassis), with every torque spec you need. In a 1998–2002 Camaro or Firebird, the F-body cam and valve spring swap goes bolt by bolt.
Build a turn-on tune sheet for this cam → Idle and spark starting values, from real tunes. Always finish on a dyno.
New Already running this cam? Send us your tune and we'll compare it with similar builds and tunes we've reviewed. Get a Tune Report → $19, free while we launch.