560 580 duration 300° 306° 110 lc rpm range 3,200-6,200 pro street/bracket 3,500 ... with a hydraulic roller camshaft chevy big block 1965-1996 retro-fit hydraulic ... continued description cam only price part no com-35-421-8 xtreme energy ... 513 513 duration 270° 276° 110 lc rpm range 1,500-5,500 good mid-range performance ... 513 513 duration 276° 282° 110 lc rpm range 1,800-5,800 strong mid-range 3.55 gears ... 513 529 duration 282° 289° 110 lc rpm range 2,000-6,000 great street machine intake ... headers 3.73 gears rough idle com-35-427-8 xtreme energy xe294rf-hr $259.95 ... 576 600 duration 294° 300° 110 lc rpm range 2,200-6,200 street/strip intake headers ... 512 512 duration 264° 270° 114 lc rpm range 1,500-5,500 mild street performance ... 512 512 duration 270° 276° 114 lc rpm range 1,800-5,800 best when used with better ...
pistons part no description cam only price oval track racing cams part no com-12- ... 483 483 duration 280°/288° 108 lc rpm range 3,000-6,000 best for heavy car short ... track works with stock valve train chevy small block 1955-1998 hydraulic flat ... 530 540 duration 280°/284° 106 lc rpm range 3,200-6,500 best on 3/8 to 1/2 mile ... flat tappet solid lifter camshafts chevy small block 1955-1998 oval track solid ... continued description cam only price $174.95 com-12-330-4 oval track ... 490 485 duration 286°/292° 108 lc rpm range 3,500-6,300 best for 1/4 or 3/8 mile ... broad torque range com-12-344-5 oval track hydraulic flat ... 510 525 duration 296°/305° 106 lc rpm range 3,700-6,500 good for 3/8 to 1/2 mile ... 530 550 duration 280°/288° 106 lc rpm range 3,000-6,700 good for 350-400 on 3/8-1/2 ...