Set of high performance retrofit roller follower hydraulic lifters for use in High Performance Retrofit Hydraulic Roller Lifter Set | for GM/Chevrolet Small Block V8 OHV 16V Engines. 4.3L 262/265 | 4.4L 267 | 4.6L 283 | 4.9L 302 | 5.0L 305/307 | 5.3L 327 | 5.7L350 | 6.3L 383 | 6.6L 400). For use with retrofit roller camshafts only. Please use fitment provided above to verify the proper fit for your vehicle. LowPricedAutoParts lifters are by Enginetech out of Carrollton, TX.