Summit Racing™ Pro LS Automotive Camshafts SUM-8732R1

$349.99 $344.99
-1%

Description

Summit Racing™ Pro LS Automotive Camshafts SUM-8732R1

  • Get Summit Racing™ Pro LS Automotive Camshafts SUM-8732R1. Pro LS Big Gun 4 Hydraulic Roller Cam
  • Stage 5.5
  • 251/255
  • 117 + 7.5
  • .625/.605 with 1.7
  • .662/.641 with 1.8
  • 4500-7500+ RPM
  • 6.2+
  • Each
Brand: Summit Racing
Manufacturer’s Part Number: SUM-8732R1
Part Type: Camshafts
Summit Racing Part Number: SUM-8732R1
UPC: 190861275072
Camshaft Manufacturers Description: The Summit Stage 5.5 has a rowdy idle and it’s designed for all-out acceleration with larger cubic inch motors with shorter runner intakes. Nearly open exhaust required to optimize mid-range and top-end. 12:1 + compression recommended. Stable to high rpm with 160lb. seat and 450lb. open pressure. Works well with nitrous or supercharger. Flycutting or aftermarket pistons will be required (except LS7). Deeper gears and a 4500 rpm converter are recommended.
Basic Operating RPM Range: 4,500-7,500
Intake Duration at 050 inch Lift: 251
Exhaust Duration at 050 inch Lift: 255
Duration at 050 inch Lift: 251 int./255 exh.
Advertised Intake Duration: 301
Advertised Exhaust Duration: 308
Advertised Duration: 301 int./308 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.625 in
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.605 in
Valve Lift with Factory Rocker Arm Ratio: 0.625 int./0.605 exh.
Lobe Separation (degrees): 117
Camshaft Gear Attachment: 3-bolt
Remanufactured: No
Computer-Controlled Compatible: Yes
Valve Springs Required: Yes
Quantity: Sold individually.

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.

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