What is a truck cam?

A "truck cam" is a camshaft designed for LS truck engines (4.8/5.3/6.0 Vortecs, and 400+ ci truck strokers) that adds power without giving up the things trucks need. BTR describes its truck cams as delivering more average torque and strong midrange for towing, good street manners, and in many cases working with the stock torque converter.

Compared with a car or race cam, truck cams use milder duration, moderate lift, and tighter lobe separation for low- and mid-rpm torque. Current examples (BTR, 2026 prices ~$390–410):

Cam	Specs (int/exh @.050, lift, LSA)	Notes
BTR Truck Stage 1 V3	201/21X°, .542/.542, 111	Mildest
BTR Truck Stage 2 V3	208/21X°, .549/.549, 108.5
BTR Truck Norris	212/22X°, .553/.553, 107	1999–2013 Silverado/Sierra; the classic LS truck cam
BTR Truck Norris NSR	212/22X°, .498/.498, 107	No springs required: lower lift works with stock springs
BTR Truck Stage 4 V3	219/23X°, .553/.553, 108.5	Most aggressive
BTR Truck Hoss	219/23X°, .620/.636, 112	For 400–416 ci trucks; works with most stock converters; needs a .660 in spring kit

("22X" is BTR's own format; they don't publish the last digit.) Gen IV AFM trucks need an AFM delete to run any of these.