TSP LS3 3/4 Race Cam

TSP LS3 3/4 Race Camshaft – LS 6.0L / 6.2L w/ Rectangular Port Heads

The TSP LS3 3/4 Race Cam is a classic 3/4 race cam reimagined for modern Rectangular-Port LS3 headed engines. With a lopey idle, proven top-end gains, and streetable drivability, this cam is ideal for 6.0 / 6.2 with rectangular port headed LS builds that want old-school sound and real performance. Expect a +60–65 HP gain over stock with the right supporting mods.

Camshaft Specifications:

• Duration @ .050” (Intake/Exhaust): 230° / 246°
• Lift (Intake/Exhaust): .629" / .615"
• LSA: 110°
• ICL: 108°
• Powerband: Strong mid-range and top-end performance
• Estimated Gain: +60–65 HP over stock

Required Components:

• Valve Springs: .660"+ rated dual valve springs required (TSP/PAC 660 or equivalent)
• Pushrods: 5/16" hardened pushrods required
• Stall Converter: 3200+ stall torque converter required for automatics

Dyno Proven:

Tested on a 370 CID LQ4 with 10:1 compression, stock L92 heads, TSP/PAC 660 dual valve springs, and a stock L92/LS3 intake manifold running on 93 octane pump gas. This cam delivered a consistent 60–65 horsepower gain with a strong, usable curve throughout the mid and upper RPM ranges.

Sound & Drivability:

• Idle: Deep, aggressive, and unmistakably choppy
• Drivability: Streetable with proper tuning and converter
• Ideal Use: Street/strip builds, weekend warriors, and retro-inspired LS setups

If you're looking for a cam that delivers that classic race feel with real power to back it up, the TSP LS3 3/4 Race Cam is the aggressive solution for 6.0L and 6.2L LS3 headed LS builds that live for chop and performance.