JMB Performance and PBJ have collaborated to design and test many different profiles over the years to come up with a line of readily available custom camshafts. All JMB/PBJ camshafts are ground by Competition cams to our specifications (some with proprietary lobe designs) on induction hardened cores for exceptional durability and long life. These are tested and proven designs that will pick up everywhere in the usable power range in both horsepower and torque. They are ground for a very broad power band with a noticeable but not radical idle, and are easy to tune. Your build is unique and a one size fits all cam is never the best choice; so we offer custom camshafts in different levels for naturally aspirated, nitrous, blower, and turbo applications.
NA63X - 23X/23X duration @ .050 lift - .62X/.63X lift with 1.7 rocker 113 CL
This NA63X grind is specifically designed for Naturally Aspirated applications that are full bolt on's with/without ported heads in a viper car, 6 speed viper truck or automatic viper truck that also has an aftermarket 2800+ RPM stall converter. Great drivability, peak power 6000+ RPM, torque gains everywhere above 2500rpm. 100+whp/wtq gain with typical bolt on's over stock.
Requires dual spring valvetrain kit.