Because they're ground differently, a solid-lifter cam must use solid lifters and a hydraulic cam must use hydraulic lifters. Also, you can't mix and match cams and lifters. Either type of roller cam and lifter is considerably more expensive than a flat tappet. Hydraulic rollers are becoming much more common but haven't found much of a following in high-performance circles yet, except in late-model computer-controlled cars. Most roller lifters aren't of the hydraulic type, so they require adjustment just like a solid lifter. A roller cam is normally associated with hard-core race engines, but several companies make street rollers that are docile enough for a daily driver, yet still make serious power. Hydraulic and solid, nonroller cams are also called "flat-tappet" cams. A solid-lifter cam is beneficial in high-rpm applications (6500 rpm and higher), but it requires a lash adjustment every few months. TYPE OF LIFTER: A hydraulic-lifter cam is the best choice if the car is to be a daily driver, because it doesn't need periodic lash adjustments. Find CHEVROLET 5.
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