Home
Shop For
Camshafts
Lifters
Rocker Arms
Timing Sets
Valve Springs
Apparel
Related Items
Clutches
Cylinder Heads
Fuel Injection
Induction Systems
Nitrous Oxide
Transmissions
Torque Converters
Quick Links
Spec Card Search
Contact Us
What's New
Instructions
Catalog
E-Newsletter
Join Here
Cam Recommendation Form
Free CamQuest™ 6 Download
Contact Us
Warranty Registration
GM Information
Ford Information
Chrysler Information
GM Gen IV VVT Cam Core Tech Bulletin
Flat Tappet Cam Tech Bulletin
Power Engineered Systems
Instructions
Magazine Product Articles
Power & Performance News™
Valve Timing Tutorial
Cam Specs
Dyno Sheets
Cam Cores
Rocker Specs
Valve Spring Chart
XM-278
Magnum 280
Magnum 292
XER-287HR-12(LS1)
XER-273HR-14 (LS1)
XR-269HR-14 (LS1)
XR-275HR-12 (#54-426-11)
Thumpr™ Cams
Camshaft FAQ
Lifter FAQ
Lobe Separation & Cam Timing
How They Effect Your Engine
Pushrod FAQ
Rocker Arm FAQ
The Truth About Valve Springs
Valve Spring FAQ
Valve Train Geometry FAQ