ApplicationCompatible for Chevy SBC V8 350 265-400 283 327 302 307SpecificationsLifter Style?Hydraulic rollerOutside Diameter: 0.8425 in.Link Bar?VerticalWarranty: one year warranty for any manufacturing defectFeature*New* High performance aftermarket products made in our own lifters factory with more than 10 years experience* A fast and affordable way to easily upgrade your car's appearance performance* CNC Machined for Maximum Accuracy* Forged, Heat Treated Chrome Alloy Steel For Strength And Wear Resistance* Precision Machined and Heat Treated Internal Components* Guaranteed to fit and meet the specifications of the OE parts being replaced* Utilizes the latest in design and material technology, ensuring quiet and maintenance-free experience* Advanced manufacturing technology ensures durability and optimum operation Specialized designs yield significant and noticeable improvements to your car engineNotice-Retro-fit for non-roller blocks.-No instruction included; professional installa