Proform GM LS Valve Covers - Slant Edge - Orange RS004C1505 Retard the ignition timing 1

Retard the ignition timing 1 degrees-3 degrees per pound of boost

**Image is of Red inserts but this item is Blue**

Be sure that both cam and crank sprockets are exactly in line with each other Misalignment can cause chain to break

1978-1991 Ford F-250

Advanced Ballistic Protection (ABP) above the eyeport

Proform GM LS Valve Covers - Slant Edge - Orange RS004C1505 Retard the ignition timing 1Proform Parts GM LS Valve Covers Slant Edge Orange 141 261 Cast Aluminum Valve Cover Orange Powdercoated Chevrolet Logo Small Block Chevrolet LS (Set of 2) PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent concepts. Our goal is