COMP Cams Lifters BV69 Retro-Fit Hydraulic Roller

If you're working on an early model Buick 231 V6 that originally came with a flat tappet cam, these COMP Cams BV69 Retro-Fit Hydraulic Roller Lifters are what you need to make the switch to a roller setup. They're designed to fit right into blocks originally equipped with flat tappet cams, offering a way to upgrade your valvetrain without needing a completely new block. This set includes 12 lifters, which is what you'll need for your V6 engine.

What sets these apart is the patent-pending piston design. It allows trapped air to escape, which helps the lifters 'pump up' faster. This means you get a more consistent valvetrain operation sooner. The pistons are also made for a precise fit, which results in the lowest possible leakdown rate, ensuring efficient operation. The axles are made from 52100 heat-treated steel, a well-known material for its wear resistance and overall strength, meaning these lifters are built to last. They also feature a lightweight body design.

These lifters have a standard .842-inch diameter and a 2.47-inch seat height. The tall body design means they'll fit both standard blocks and taller aftermarket blocks. It's important to note that these require a shrouded wheel for application on the Buick 231 V6. If you're looking to improve valvetrain efficiency and reduce friction in your classic Buick V6, these retro-fit roller lifters are a solid option.