Summit Racing™ Pro LS Vortec Truck Swap Camshafts SUM-8728R1

Overview

Brand:
Summit Racing
Manufacturer’s Part Number:
SUM-8728R1
Part Type:
Camshafts
Product Line:
Summit Racing™ Pro LS Vortec Truck Swap Camshafts
Summit Racing Part Number:
SUM-8728R1
UPC:
190861257887
Cam Style:
Hydraulic roller tappet
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Big Truck Torkinator is a short-duration/high-lift beast. It’s designed to make great torque from 2,000 rpm up and pulls to 6500 rpm while remaining easy on the valvetrain with proven .600 lift beehive springs. It has a steady lope and will require tuning.
Basic Operating RPM Range:
2,000-6,300
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:
261
Advertised Exhaust Duration:
267
Advertised Duration:
261 int./267 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.600 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.585 in.
Valve Lift with Factory Rocker Arm Ratio:
0.600 int./0.585 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
Yes
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
The Big Torkinator is a short-duration/high-lift beast. It’s designed to make great torque from 2,000 rpm up and pulls to 6500 rpm while remaining easy on the valvetrain with proven .600 lift beehive springs. It has a steady lope and will require tuning. Camshaft features base circle of 0.728 int./0.737 exh.

Summit Racing™ Pro LS Vortec Truck Swap Camshafts

Summit Racing™ Pro LS Truck Swap cams are affordable and give you maximum punch where the torque converter hits. The cam lobes are designed for excellent valvetrain longevity. Both drop-in or high-lift versions are available. They come in stages allowing you to quickly determine which gives you the idle and efficiency you are looking for. Idle response and the midrange torque from theses camshafts is unmatched. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for an extremely good finish quality. The lobes have been designed for stability at high rpm with the spring pressures found in commonly available, quality spring packs.

Warranty