Texas Speed & Performance (TSP) "CHOPacabra" Truck Camshaft Specs (TSP-NSR-Chopacabra-6.0): 220/228 .495"/.495" 108 LSA
These camshafts have a 3-bolt timing gear pattern.
From Texas Speed:
"The TSP-NSR-Chopacabra-6.0 Camshaft brings the legendary sound of the Chopacabra series to cathedral-port 6.0L LS engines — all without requiring valve spring upgrades. With aggressive overlap and a wicked idle, this cam delivers a choppy, rowdy sound in a drop-in format that works with stock springs, pushrods, and torque converters."
- Duration @ .050” (Intake/Exhaust): 220° / 228°
- Lift (Intake/Exhaust): .495" / .495"
- LSA: 108°
- ICL: 106°
- Sound Profile: Choppy idle with maximum overlap
- Estimated Gain: 50–70+ HP depending on setup
No Springs Required: Works with factory LS valve springs
Stock Pushrods Compatible: No need for additional valvetrain changes
Retains Factory Converter: Perfect for 4L80E/4L60E applications
Rowdy Chop: Signature idle that’s unmistakable at any cruise night
Maximum Overlap: Lopey and aggressive, without hurting low-speed drivability
Dyno-tested on a 370 CID LQ4 engine with 10:1 compression, stock 317 cathedral heads, and a TBSS/NNBS intake manifold running on 93 octane pump gas, this cam delivers strong midrange power gains while keeping install costs low.
If you want maximum sound without added parts, the TSP NSR Chopacabra Camshaft for 6.0L gives you that unmistakable cammed idle in a hassle-free, stock-spring compatible package.
Note: NSR camshafts run at the limit of the OEM springs and you MUST ensure that your valves springs are making their rated spec and are not worn/fatigued. Using this camshaft with weak OEM valve springs may result in broken springs and/or engine damage.
NOTE: HP gains are representative of what was achieved by TSP on their in-house dyno and are highly variable depending on your combination's existing modifications and tuning - results may vary.
