Edelbrock Cyl Head Perf RPM AMC 290 304 343 360 390 401 V-8 w/ Mach Exhst X-Over Complete 2009-pontiac-g8-esi4579119 They are smooth idling cams

They are smooth idling cams for daily drivers

Edelbrock Rollin' Thunder Camshaft #2221 is designed for 289-302 Ford V8 engines and produces optimum torque from the low-end to the mid-range

1999-2000 Chevrolet C2500 Base 1996-1998 Chevrolet C2500 Cheyenne 1999-2000 Chevrolet C2500 LS 1996-1998 Chevrolet C2500 Silverado 1998 Chevrolet C2500 WT 1996-1999 Chevrolet C2500 Suburban Base 1996-1999 Chevrolet C2500 Suburban LS 1996-1997 Chevrolet C2500 Suburban LT 1996-1997

Most kits require no modifications for installation

Edelbrock Cyl Head Perf RPM AMC 290 304 343 360 390 401 V-8 w/ Mach Exhst X-Over Complete 2009-pontiac-g8-esi4579119 They are smooth idling camsThe Edelbrock #60139 Performer RPM cylinder head is designed as a bolt on performance upgrade for any 1967 91 AMX, Javelin or Jeep with a 343, 360, 390 or 401 AMC V8 engine. They include adjustable rocker studs and guide plates set up for use with small block Ford style adjustable 1. 6: 1 ratio rockers. The intake flange is dual drilled to accommodate early and late model intake bolt patterns, covering 1967 91. A Complete head includes larger than