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MTM963-102 - Mast Motorsports LS3 HO Camshaft and Spring Package

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Pricing: $719.99


Mast is THE leader in LS cam technology. Want proof? We had variable valve timing cams 18 months BEFORE anyone in the aftermarket. We design our lobes IN HOUSE using proprietary software. We test each cam on our NCRS Superflow engine dyno in actual applications to find the best power curve. Then, we test each profile in “real world” conditions. After many grueling hours, we select a profile to be manufactured to our precision specs. from select billet cores.

Mast Motorsports cam & valve spring package notes:
• Each package incluedes a Mast dyno proven camshaft PLUS matching Mast premium beehive valve springs
• Mast premium nitrided beehive valve springs are included with Z06, HO & SS cams
• Headers are recommended on every GM Gen IV app. to significantly enhance power improvements from camshaft swap. Mast Motorsports recommends that every cam be accompanied by a calibrated tune using HP Tuners, EFI Live, or equivalent software

Idle Quality: Moderate
Duration @ .050" (In. Ex.): 225/231
Valve Lift (w/1.7 Rocker) (In. Ex.): .602/.607
Lobe Sep. Angle 115
Max Lift: .650
O.D. / I.D.: 1.290"/.885"
Seat Pressure (lbs. / In.): 130 @ 1.800"
Open Pressure (lbs. / In.): 318 @ 1.200"
Coil Bind: 1.080
Spring Rate (lbs.): 313

Application List


Shipping Information

  • Item Requires Shipping
  • 13.0 lbs.

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