Summit Racing™ Pro LS Automotive Camshafts SUM-8721R1

Overview

Brand:
Summit Racing
Manufacturer’s Part Number:
SUM-8721R1
Part Type:
Camshafts
Product Line:
Summit Racing™ Pro LS Automotive Camshafts
Summit Racing Part Number:
SUM-8721R1
UPC:
190861251588
Cam Style:
Hydraulic roller tappet
Camshaft Use:
Racing
Camshaft Manufacturers Description:
Not intended for use with VVT or AFM. Summit Pro LS cams are designed for engines swapped into pre-pollution controlled vehicles. They are not for use in registered emissions-controlled vehicles operated on public highways and roads. 3-bolt camshaft, computer tuning required.
Basic Operating RPM Range:
4,000-7,500
Intake Duration at 050 inch Lift:
247
Exhaust Duration at 050 inch Lift:
255
Duration at 050 inch Lift:
247 int./255 exh.
Advertised Intake Duration:
283
Advertised Exhaust Duration:
297
Advertised Duration:
283 int./298 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.625 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.615 in.
Valve Lift with Factory Rocker Arm Ratio:
0.625 int./0.615 exh.
Lobe Separation (degrees):
113.5
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
Yes
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Not intended for use with VVT or AFM. Summit Pro LS cams are designed for engines swapped into pre-pollution controlled vehicles. They are not for use in registered emissions-controlled vehicles operated on public highways and roads. 3-bolt camshaft, computer tuning required.

Summit Racing™ Pro LS Automotive Camshafts

Summit Racing™ Pro LS Automotive cams are affordable and designed in stages with very specific cam timing for each individual application in cathedral and rectangle port versions. This ensures maximum performance and gives you the idle you are looking for. The lobes are designed for stability at high rpm with the spring pressures found in quality .600 and .670 in. spring packs. Careful design guarantees the cams can be installed with minimal difficulty. Although piston to valve clearance should always be verified, the Stage 2 and 3 cams often allow for additional cylinder head milling. The Stage 4 cams often require no changes but can be degreed slightly different as needed. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for unmatched quality.

Warranty