BTR GEN III & IV LS TRUCK CAM - STAGE 3 - V3 - BTR-LSTRUCKSTG3-V3

BTR GEN III & IV LS TRUCK CAM - STAGE 3 - V3 - BTR-LSTRUCKSTG3-V3

Specs: 213/22X, .549"/.549", 109 LSA

INTAKE LOBE LIFT @ TDC: 0.0502”

      * NOTICE - Stage 3 & 4 V3 Truck cams REQUIRE BTR-SK018 spring kit (or similar) AND one-piece chromoly pushrods!    

The new BTR V3 Truck Camshafts are the result of our most extensive truck cam development program ever, delivering more average torque and horsepower under the curve—perfect for trucks that need strong midrange performance & enhanced towing capability, with Stage 3 giving you even more top-end power!

These cams use advanced valvetrain simulation and dynamic modeling tools, with Spintron development on both square and cathedral port heads to guarantee reliable, stable valvetrain performance across all possible platforms.

Next, we use engine and chassis dyno testing, using full-length truck single and dual exhaust systems and OEM-style intakes.  High-speed exhaust and intake port sensors and in-cylinder combustion pressure measurements on the dyno give feedback on pressure wave dynamics in real time. We perform hundreds of dyno runs to fine-tune cam timing, valve overlap, and exhaust scavenging, maximizing torque and efficiency across the RPM range.

These “Truck” cams receive the same engineering rigor and combustion development as our race programs. No old catalog lobes! Our goal was a clean-sheet design to bring true motorsport-level engineering discipline to the street and towing world, using the same high-end analytical tools, Spintron lobe development techniques, and wave-based combustion tuning methodologies trusted in professional racing. Plus, you're getting a 100% USA-designed & made product!

BTR SKU:                                                 BTR-LSTRUCKSTG3-V3               

Camshaft Description:                          BTR LS TRUCK V3 STAGE 3                         

Engine Family:                                        GEN III & IV LS Applications    

Recommended Engine Size:                4.8-6.2L                                                 

Recommended Valve Springs:            BTR-SK018

Recommended Lifters/Lifter Trays:   (LS7 Lifters) X12499225, (Trays) BTR95365-4      

Suggested Pushrod Length:                7.400"  

INTAKE DURATION @.050":                 213°      

EXHAUST DURATION @.050":             22X°      

LOBE LIFT INTAKE:                                0.323"  

LOBE LIFT EXHAUST:                            0.323"  

INTAKE LOBE LIFT @ T.D.C.:                 0.0502"              

ROCKER ARM RATIO:                            1.7:1     

NET LIFT INTAKE:                                   0.549"  

NET LIFT EXHAUST:                               0.549"  

LOBE SEPARATION ANGLE:                  109°      

EXPECTED IDLE VAC 750RPM:             42 (kpa)             

RPM Operating Range:                         1900-6400

Idle Quality:                                            Great lope similar to Truck Norris

Chop Scale:                                             6/10

Expected Cam Swap Gains (P2P):       64HP 27FTLBS

Torque Converter Characteristics:      OE Compatible with Proper Tuning, Aftermarket Converter recommended for best performance. Tested in-house 2004 stock 4L60e converter!   

'Drivability':                                             Near OE Torque Below 2500 with much broader powerband; great for a HOT Daily Driver

Engineering Says:                                        This is engineering's top pick for best all-around truck cam!

DYNO TESTING CONFIGURATION:                                    

Dyno data collected with stock GEN IV 5.3L short block with stock 243 heads, BTR98544 head gaskets, TBSS Intake, Silverado Headers, and Speed Engineering NNBS Y-Pipe, and full-length 3.5” Single Exhaust with Muffler. 

  COMPARING CAMS:        BTR Stage 3 V3 Truck Cam to OEM 5.3 Truck Cam

PEAK TO PEAK GAINS:             BTR-LSTRUCKSTG3-V3 TO OE 5.3L CAM           

HORSEPOWER GAIN PEAK-PEAK (HP):                 63.3(HP)

HORSEPOWER % GAIN PEAK-PEAK:                     17.0%   

TORQUE GAIN PEAK-PEAK(lb/ft):                          26.3(lb/ft)

TORQUE % GAIN PEAK-PEAK:                               6.7%     

AVERAGE GAINS:             BTR-LSTRUCKSTG3-V3 TO OE 5.3L CAM            

AVG HORSEPOWER GAIN (HP):                            21.2(HP)

AVG HORSEPOWER % GAIN:                                7.6%     

AVG TORQUE GAIN (lb/ft):                                     22.4(lb/ft)

AVG TORQUE % GAIN:                                           6.1%     

RPM RANGE FOR AVERAGE:                               2000-6000RPM   

   COMPARING CAMS:        BTR Stage 3 V3 Truck Cam TO BTR Stage 3 V2 Truck Cam     

PEAK TO PEAK GAINS:             BTR-LSTRUCKSTG3-V3 TO BTR-31824100          

HORSEPOWER GAIN PEAK-PEAK (HP):                6.0(HP)

HORSEPOWER % GAIN PEAK-PEAK:                     1.4%     

TORQUE GAIN PEAK-PEAK(lb/ft):                         15.4(lb/ft)

TORQUE % GAIN PEAK-PEAK:                               3.8%     

AVERAGE GAINS:             BTR-LSTRUCKSTG3-V3 TO BTR-31824100                   

AVG HORSEPOWER GAIN (HP):                            11.1(HP)

AVG HORSEPOWER % GAIN:                                 3.8%     

AVG TORQUE GAIN (lb/ft):                                    15.4(lb/ft)

AVG TORQUE % GAIN:                                           4.2%                            

RPM RANGE FOR AVERAGE:                               2000-6000RPM