TSP Texas Speed Stage 1 LS3 N/A Camshaft Install Kit – with GM 12499225 Lifters, Bolts, LS9 Head Gaskets – 225/236 .629/.617 114 LSA 109 ICL – for GM 6.2L 6.0L LS3 LS2 LSA L92 L76 – MADE IN USA

Description

The Brian Tooley Racing Red Hot is one of the most talked about camshafts in the LS performance community right now — and this kit gives you everything needed to install it right on your 6.0L LQ4 or LQ9, with every critical component proudly made in the USA. The Red Hot was engineered to do something most cams can’t: deliver more power than BTR’s existing Stage 2 profiles while using less intake duration, resulting in a broader, more usable powerband that works equally well in naturally aspirated and lightly boosted applications. With dyno-proven gains of 50+ rear wheel horsepower and 11+ lb-ft of torque, a 113° LSA that keeps the powerband broad and accessible, and .619″/.617″ valve lift, the Red Hot is the cam for builders who want serious real-world performance without sacrificing street manners. The 6.0L LQ4 and LQ9 are already some of the most capable naturally aspirated LS engines ever put in a truck — the Red Hot extracts more of what they already have.
What sets this kit apart is the uncompromising quality of every USA-made supporting component. The genuine GM Performance 12499225 hydraulic roller lifters are manufactured right here in the United States — not generic offshore substitutes. These are the same lifters trusted in OEM performance applications, chosen by professional engine builders who refuse to cut corners on the parts that keep a valvetrain alive under a performance cam. The head bolts are made by Elgin Industries or Fel-Pro — two of the most trusted American engine component manufacturers in the industry — delivering the clamping force your build demands for a proper, lasting seal. The full upper MLS head gasket set is precision matched to the rectangle port cylinder heads found on 6.0L LQ4 and LQ9 engines, providing superior crush resistance and long-term sealing reliability that composite gaskets simply cannot match.
This kit is built specifically for 1999–2013 GM 6.0L LQ4 and LQ9 Vortec LS engines. A professional tune is required for both automatic and manual applications. A 2,800–3,200 RPM stall converter is recommended for automatic vehicles for best performance. Measuring piston-to-valve clearance prior to installation is always recommended. Every part in this kit is proudly made in the USA

On the road you’ll notice stronger off‑the‑line response, fuller roll‑on power from ~1400 RPM, and a pronounced but truck‑friendly idle character. The NSR design preserves stock spring use and maintains reliable valve control while producing a deeper, more authoritative exhaust tone under load—perfect for drivers who want performance without complex valvetrain changes.

This kit includes GM Performance lifters (part #12499225) for correct cam/lifter compatibility, a full upper head gasket set with MLS head gaskets for durable sealing, and two sets of USA‑made Elgin or Fel‑Pro head bolts. All critical components are sourced/made in the USA to ensure quality and fitment—get a matched, install‑ready package and go faster with confidence.

• 100% USA MADE COMPLETE TSP STAGE 1 LS3 CAM KIT – Every part made in the USA: Texas Speed Stage 1 LS3 N/A Camshaft (225/236, .629″/.615″, 114 LSA, 109 ICL, 3-Bolt), 16 Genuine GM Performance 12499225 Hydraulic Roller Lifters (Made in USA), 2 Sets of USA-Made Elgin or Fel-Pro Head Bolts, and a Premium Upper MLS Head Gasket Set with LS9-Style Head Gaskets (Made in USA). One order, one shipment, zero compromises.
• DYNO PROVEN +65HP +23TQ – FACTORY CONVERTER FRIENDLY – Dyno-proven gains of 65+ rear wheel horsepower and 23+ lb-ft of torque across a broad 1,600–6,800 RPM operating range. The largest cam TSP recommends for stock converter automatic applications — great drivability, great chop at idle, real power gains without demanding anything extra from your drivetrain.
• VERIFIED FITMENT – Recommended for LS2, LS3, LSA, L92, L99, and L76 rectangle port engines. Fits 2010–2015 Camaro SS, 2005–2013 Corvette C6, 2009 Pontiac G8 GXP, and LS swap builds running rectangle port heads. LS9-style MLS head gaskets precision matched to rectangle port cylinder heads. Please verify bolt pattern prior to installation.
• GENUINE GM/ACD PERFORMANCE 12499225 ROLLER LIFTERS – MADE IN THE USA – The real GM/ACD Performance part number 12499225 hydraulic roller lifters, manufactured in the United States — the same trusted lifters used in OEM performance applications. When building a serious LS3 engine, the lifters matter as much as the cam. We don’t cut corners on the parts that keep your valvetrain alive.
• USA-MADE ELGIN OR FEL-PRO HEAD BOLTS + LS9 MLS HEAD GASKETS – Elgin and Fel-Pro are two of the most trusted American engine component manufacturers in the industry. Their head bolts deliver the clamping force a performance build demands. The premium upper MLS head gasket set features LS9-style head gaskets — superior crush resistance and long-term reliability that composite gaskets cannot match.