Ask a Question

Technical Questions

Can't find an answer in our Help Center? Submit a question, and we'll get back to you soon.

Need Business/Order Related Support?

Search our Help Center
Get answers to business and order questions from our experienced Customer Service representatives.

Website Feedback

How are we doing? We really are interested in knowing how you feel about DX Engineering. Contact us with your comments - good, bad, great, so-so, or whatever. We want to hear from you!

Do a Proper Roller Cam Swap in Your Big Block Chevy with COMP Cams Evolution Retrofit Hydraulic Roller Lifters

If you’re planning on converting your flat tappet Chevy Mark IV big block to a hydraulic roller camshaft, make sure to include a set of COMP Cams’ Evolution Retrofit Hydraulic Roller Lifters. Here’s why.

They’re built using COMP’s patented Hydraulic Cartridge Technology. Essentially, the lifters have a removable hydraulic cartridge with a smaller volume of oil than conventional hydraulic roller lifters. This reduces oil aeration to deliver consistent bleed-down rates between each lifter. That improves lifter responsiveness, especially at high RPM.

Other features include:
• Greatly reduced noise at startup
• Lifter body that is 18% thicker than conventional lifters to reduce distortion
• Two oiling channels ensure pushrods and rocker arms never starve for oil
• Stronger link bars stabilize the lifters throughout the RPM range
• Fully serviceable hydraulic cartridges allow you to rebuild lifters
• Tall body fits standard blocks and tall lifter bore aftermarket blocks

CHECK OUT COMP CAMS EVOLUTION RETROFIT HYDRAULIC ROLLER LIFTERS FOR BIG BLOCK CHEVY