Z06FRC

I have a 99 vette that will run a vortech supercharger and I'm trying to make a decision between the LS6 or the XR265HR camshafts. Keep in mine that I'm not swapping the heads they will remain stock, it's just a cam swap it'll be doing. Is it worth the extra money to get something alittle better then the LS6? Also can I run 02-04 LS6 Valvesprings with the XR265HR camshaft?

XR265HR Cam Spec:

Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,500-6,800 RPM
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 218
Duration at 050 inch Lift: 212 int./218 exh.
Advertised Intake Duration: 265
Advertised Exhaust Duration: 271
Advertised Duration: 265 int./271 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.558 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.563 in.
Valve Lift with Factory Rocker Arm Ratio: 0.558 int./0.563 exh. lift
Lobe Separation (degrees): 115

LS6 Cam Specs:

Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 1,500-5,200
Intake Duration at 050 inch Lift: 204
Exhaust Duration at 050 inch Lift: 218
Duration at 050 inch Lift: 204 int./218 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.550 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.550 in.
Valve Lift with Factory Rocker Arm Ratio: 0.550 int./0.550 exh. lift
Lobe Separation (degrees): 117

Y2Kvert4me

I'd like to say you probably could get away with the Comp cam with LS6 springs...and on paper, you should be able to.

But there's been an awful lot of spring breakage reports from people with bone stock LS6s lately, which tells me those springs might not be quite as robust and durable as GM had hoped for.

I would opt for a little stouter spring like a Comp 918 at bare minimum.