Chevy Mechanical Roller Racing Camshafts


 

Competition Cams Xtreme Energy Street Mechanical ROLLER Camshafts

Competition Cams Xtreme Energy Street Mechanical ROLLER Camshafts [does not need special distributor gear]

Compatible components
262-400- PP-BY977-16 Springs, PP-BY740-16 Spring caps, PP-BY611-16 Collets, PP-BY503-16 Seals
396-454- PP-BY953-16 Springs, PP-BY741-16 Spring caps, PP-BY612-16 Collets, PP-BY505-16 Seals [3/8” valves]
PP-BY12-769-8 268R Street Mechanical Roller Xtreme Energy Camshaft
RPM Range: 2000-6000
Duration @ .050” lift = In 230, Ex 236, Valve lift = In .552”, Ex .564”, Lobe sep 110
268R for 262-400 SBC engines 1955-98- 1.5 rockers
Good for weekend cruiser, with 9:1+ compression, 2000+ stall & lower gears. Noticeable idle. Needs thrust button & wear plate. Tappet clearance .016”/.018”.
£269.60
PP-BY12-770-8 274R Street Mechanical Roller Xtreme Energy Camshaft
RPM Range: 2000-6000
Duration @ .050” lift = In 236, Ex 242, Valve lift = In .564”, Ex .570”, Lobe sep 110
274R for 262-400 SBC engines 1955-98- 1.5 rockers
Good for power touring, 2500+ stall & lower gears. Easy on parts, rough idle. Needs thrust button & wear plate. Tappet clearance .016”/.018”.
£327.34
PP-BY12-771-8 280R Street Mechanical Roller Xtreme Energy Camshaft
RPM Range: 2500-6500
Duration @ .050” lift = In 242, Ex 248, Valve lift = In .570”, Ex .576”, Lobe sep 110
280R for 262-400 SBC engines 1955-98- 1.5 rockers
Best in street machines with 2800+ stall, 10:1+ compression & lower gears. Needs thrust button & wear plate. Tappet clearance .016”/.018”.
£340.60
PP-BY11-771-8 280R Street Mechanical Roller Xtreme Energy Camshaft
RPM Range: 2500-6500
Duration @ .050” lift = In 242, Ex 248, Valve lift = In .646”, Ex .653”, Lobe sep 110
280R for 396-454 BBC engines 1965-96- 1.7 rockers
Best in street machines with 2800+ stall, 10:1+ compression & lower gears. Needs thrust button & wear plate. Tappet clearance .016”/.018”.
£356.47

 

Mechanical ROLLER- Racing Camshafts (Roller standard base circle)

Compatible components
262-400- PP-BY943-16 Springs, PP-BY731-16 or PP-BY720-16 Spring caps, PP-BY611-16 Collets, PP-BY503-16 Seals
PP-BY12-910-9 288BR-6 for 262-400 SBC engines 1955-98- 1.5 rockers
RPM Range: 3800-7000
Duration @ .050” lift = In 260, Ex 264, Valve lift = In .660”, Ex .630”, Lobe sep 106
More agressive inlet lobe, more torque. Will require cylinder head machining. A bronze gear, thrust button and wear plate must be used. Can use lash caps PP-BY621-16, rev kit PP-BY4000 & stud girdle PP-BY4004. Tappet clearance .020” / .022”.
£407.40
PP-BY12-912-9 292BR-6 for 262-400 SBC engines 1955-98- 1.5 rockers
RPM Range: 4500-7500
Duration @ .050” lift = In 264, Ex 268, Valve lift = In .660”, Ex .630”, Lobe sep 106
Best torque in 406+ late model or 355 9:1. Will require cylinder head machining. A bronze gear, thrust button and wear plate must be used. Can use lash caps PP-BY621-16, rev kit PP-BY4000 & stud girdle PP-BY4004. Tappet clearance .020” / .022”.
£407.40
PP-BY12-902-9 296AR-6 for 262-400 SBC engines 1955-98- 1.5 rockers
RPM Range: 3600-6600
Duration @ .050” lift = In 260, Ex 262, Valve lift = In .630”, Ex .630”, Lobe sep 106
Good torque and throttle response with 355 engine on short track. Will require cylinder head machining. A bronze gear, thrust button and wear plate must be used. Can use lash caps PP-BY621-16, rev kit BY4000 & stud girdle PP-BY4004. Tappet clearance .020” / .022”.
£373.24
PP-BY12-905-9 308AR-7 for 262-400 SBC engines 1955-98- 1.5 rockers
RPM Range: 5000-8200
Duration @ .050” lift = In 272, Ex 274, Valve lift = In .630”, Ex .630”, Lobe sep 107
Good for 311-355 with open carb. Good on road course. Will require cylinder head machining. A bronze gear, thrust button and wear plate must be used. Can use lash caps PP-BY621-16, rev kit PP-BY4000 & stud girdle PP-BY4004. Tappet clearance .020” / .022”.
£322.48

 

Mechanical ROLLER- Racing Camshafts (383 SBC Roller LOW base circle)

Compatible components
383- PP-BY977-16 Springs, PP-BY740-16 Spring caps, PP-BY611-16 Collets, PP-BY503-16 Seals
PP-BYAJG290 XR292R for 383 SBC engines 1955-98- 1.5 rockers
RPM Range: 3200-7200
Duration @ .050” lift = In 254, Ex 260, Valve lift = In .582”, Ex .588”, Lobe sep 110
Best for Pro-Street, or Racing. Needs good inlet & exhaust. Would work well with 11:1 compression & 3500-4000rpm stall converter. Thrust button & wear plate must be used. Can use lash caps PP-BY621-16, rev kit PP-BY4000 & stud girdle PP-BY4004. Use with PP-BY891-16 lifters. Tappet clearance .016” / .018”.
£343.75

 

Mechanical ROLLER- Racing Camshafts (427 SBC with 1.948” BBC bearing journals)

PP-BYAJG350 4308B/4312B for 427 SBC engines with Dart tall deck block- 1.5 rockers
RPM Range: 6500-7000
Duration @ .050” lift = In 263, Ex 271, Valve lift = In .648”, Ex .654”, Lobe sep 108
Great for Drag Racing or Circuit Racing. Would work well with 10.5 or higher compression. A thrust button, bronze distributor gear & wear plate must be used. Can use lash caps PP-BY621-16, rev kit PP-BY4000 & stud girdle PP-BY4004. Tappet clearance .016” / .016”.
£313.27