BTR Gen III & IV LS Truck Cam - Stage 1 - V3 - BTR-LSTRUCKSTG1-V3
Specs: 201/21X, .542"/.542", 111 LSA
Intake Lobe Lift @ TDC: 0.0284"
Overview
The new BTR V3 Truck Camshafts are the result of our most extensive truck cam development program ever. These cams deliver more average torque and horsepower under the curve — perfect for trucks that need strong midrange performance and enhanced towing capability.
BTR used advanced valvetrain simulation, dynamic modeling tools, and Spintron development on both square and cathedral port heads to guarantee reliable, stable valvetrain performance across all platforms.
Each cam was validated through engine and chassis dyno testing using full-length single and dual truck exhaust systems and OEM-style intakes. High-speed exhaust and intake sensors, along with in-cylinder pressure measurements, helped fine-tune cam timing, valve overlap, and scavenging for maximum torque and efficiency.
These “Truck” cams receive the same engineering rigor as our race programs — no old catalog lobes. This is a clean-sheet design built with motorsport-level analytical tools, Spintron lobe development, and wave-based combustion tuning. Plus, it’s 100% USA-designed and manufactured.
Specifications
BTR SKU: BTR-LSTRUCKSTG1-V3
Camshaft Description: BTR LS Truck V3 Stage 1
Engine Family: Gen III & IV LS Applications
Recommended Engine Size: 4.8L – 6.2L
Recommended Valve Springs: BTR-SK018 or SP011-16
Note: If you have a 6.0L or 6.2L truck engine with square-port heads, use the BTR-SK018 spring kit.
Recommended Lifters & Trays: (LS7 Lifters) X12499225, (Trays) BTR95365-4
Suggested Pushrod Length: 7.400"
Camshaft Data
| Specification | Value |
|---|---|
| Intake Duration @ .050" | 201° |
| Exhaust Duration @ .050" | 21X° |
| Lobe Lift Intake | 0.319" |
| Lobe Lift Exhaust | 0.319" |
| Intake Lift @ TDC | 0.0284" |
| Rocker Arm Ratio | 1.7:1 |
| Net Lift Intake | 0.542" |
| Net Lift Exhaust | 0.542" |
| Lobe Separation Angle | 111° |
| Idle Vacuum @ 750 RPM | 32 kPa |
| Operating Range | 1200–6000 RPM |
| Idle Quality | Minimal change from stock |
| Chop Scale | 1/10 |
| Expected Gains (Peak-to-Peak) | 41+ HP / 19+ lb-ft |
| Torque Converter Compatibility | Works with factory converters |
| Drivability | Stock-like drivability with added torque everywhere |
Dyno Testing Configuration
Testing performed with a stock Gen IV 5.3L short block, 243 heads, BTR98544 head gaskets, TBSS intake, Silverado headers, Speed Engineering NNBS Y-pipe, and a full-length 3.5” single exhaust with muffler.
COMPARING CAMS: BTR Stage 1 V3 Truck Cam to OEM 5.3 Truck Cam
BTR Stage 1 V3 Truck Cam vs OEM 5.3 Truck Cam
| Metric | Gain | % Gain |
|---|---|---|
| Horsepower (Peak-to-Peak) | +41.2 HP | +11.0% |
| Torque (Peak-to-Peak) | +19.2 lb-ft | +4.9% |
| Average Horsepower | +9.4 HP | +3.8% |
| Average Torque | +12.9 lb-ft | +3.5% |
| RPM Range (Average) | 1900–5000 RPM |
COMPARING CAMS: BTR Stage 1 V3 Truck Cam TO BTR Stage 1 V2 Truck Cam
BTR Stage 1 V3 Truck Cam vs BTR Stage 1 V2 Truck Cam (BTR-30612120)
| Metric | Gain | % Gain |
|---|---|---|
| Horsepower (Peak-to-Peak) | +4.6 HP | +1.1% |
| Torque (Peak-to-Peak) | +11.8 lb-ft | +2.9% |
| Average Horsepower | +8.8 HP | +3.6% |
| Average Torque | +13.5 lb-ft | +3.7% |
| RPM Range (Average) | 1900–5000 RPM |
JUST FOR KICKS: BTR Stage 1 V3 Truck Cam TO BTR Truck Torque Cam
