Comp cams LSR cam for road racing
 

Does anybody have the LSR cam on their C5 Z06 who road races?

There are two LSR cams I am curious about. The cam will be installed with all the necessary parts including the 921 kit, mellings oil pump, ARP damper bolt, new seals, gaskets, etc.

The first being the LSR 54-457-11, the specs are.

Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,700-6,800
Intake Duration at 050 inch Lift 223
Exhaust Duration at 050 inch Lift 231
Duration at 050 inch Lift 223 int./231 exh.
Advertised Intake Duration 273
Advertised Exhaust Duration 281
Advertised Duration 273 int./281 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.610 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.617 in.
Valve Lift with Factory Rocker Arm Ratio 0.610 int./0.617 exh.
Lobe Separation (degrees) 112
Camshaft Gear Attachment 3-bolt
Computer-Controlled Compatible Yes



The second one being the more likely of the two.
LSR 54-456-11
Cam Style Hydraulic roller tappet
Basic Operating RPM Range 1,500-6,700
Intake Duration at 050 inch Lift 219
Exhaust Duration at 050 inch Lift 227
Duration at 050 inch Lift 219 int./227 exh.
Advertised Intake Duration 269
Advertised Exhaust Duration 277
Advertised Duration 269 int./277 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.607 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.614 in.
Valve Lift with Factory Rocker Arm Ratio 0.607 int./0.614 exh.
Lobe Separation (degrees) 112
Camshaft Gear Attachment 3-bolt
Computer-Controlled Compatible Yes


:cheers:

Stock cam for most racing. T1 or NASA ST2

or the GM Cup Cam for World Challenge or SPO

Is the GM cup cam the same as the GM PP asa cam?

No two different cams

GMPP ASA 226/236 525/525 110
GM- Grand am cup 239/251 570/570 106

Thanks for that info. :thumbs: