Crower 66490-16 Features:

Crower 66490-16 severe-duty mechanical roller lifter set for SBC cutaway 1986-up and Bowtie applications with raised-seat design. Features a +0.300 in. higher pushrod seat to avoid block notching for pushrod clearance on taller late-model lifter bores. One-piece CNC-machined special-alloy body is heat-treated for wear resistance and uses larger-diameter, thick-wall bearings. Specs include 0.8415 O.D., 1.890 bearing O.D., 0.750 pushrod seat height, and 131 g weight per lifter.

Severe Duty Rollers Raise Raised Seat SBC Cutaway 86 Features:

• Raised-seat design for 1986-up SBC cutaway and Bowtie blocks, adds +0.300 in. pushrod seat height for pushrod clearance
• One-piece special-alloy body, CNC-machined and heat-treated for wear resistance in severe-duty mechanical roller valvetrains
• 0.8415 O.D. lifter body with 1.890 bearing O.D., larger thick-wall bearings for high-rpm race durability and stability
• Supports 0.300 in. shorter pushrods to reduce valvetrain flex and weight, with 0.750 pushrod seat height and 131 g mass
• Billet-alloy lifter construction with heavy-duty stainless steel alignment blade, built for late-model tall lifter-bore applications