Howards Cams 91127 SportMax Vertical Bar Mechanical Roller Lifter Set

The Howards Cams 91127 SportMax Vertical Bar Mechanical Roller Lifter Set is designed for entry-level sportsman racers seeking high-quality performance valve train components for Chevrolet big block Mark IV, Gen 5, and Gen 6 engines (396-454/502 BBC). These lifters are built with high-grade materials at a budget-friendly price point, making them an excellent choice for performance engine builds.

Key Features:

• 8620 heat-treated steel bodies with black oxide coating for protection and durability
• 9310 steel rollers with superior high-strength bearings for reliable operation
• Vertical bar link design with included link bars
• 0.842-inch lifter body diameter with standard height
• 0.750-inch roller wheel diameter for optimal valve train geometry
• 2.021-inch seat height with center/center offset
• Each lifter weighs 236 grams (approximately 8.3 oz)
• Hand-assembled and checked for fit prior to packaging
• Made in the United States

Important Note: This lifter set is designed for racing applications and is not recommended for street use. For street-driven vehicles, Howards Cams recommends using their part number 91158 with Direct Lube Pin Oilers for proper lubrication.