BTR LS 400+" LOW LIFT TRUCK CAMSHAFT - BTR-LS400+TRUCKLL 217/23x  .542"/.542"  113.5 LSA INTAKE LOBE LIFT @ TDC: 0.0425" BTR designed the  BTR-LS400+TRUCKLL cam for use in both Cathedral and Rectangular port headed 400"-416" C.I. truck applications. This cam was designed to use moderate factory-type valve lift numbers to help valvetrain durability and valve spring life, also allowing the end user to choose a more economical spring kit. Recommended compression ratio of 10.5 - 1 or less for use with pump gas. Ideal for your daily driver and some light-duty towing. It will also work with most stock converters. Developed from hundreds of hours of in-house cam lobe design and Spintron testing, this cam offers the reliability and durability you have come to expect from BTR. Reccomended Spring Kits - SP011 or SK018