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Scorpion Racing Products SCP1099-1

Race Series Rocker Arm Chevy V8 LS1-LS2-LS6-LS364/400-LQ9

Scorpion Racing Products SCP1099-1
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347-SCP1099-1

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Estimated ship date 10/02/17 if Ordered Today
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Scorpion Racing Products SCP1099-1 Race Series Rocker Arm Chevy V8 LS1-LS2-LS6-LS364/400-LQ9 $29.99
Race Series Rocker Arm
  • Chevy V8 LS1-LS2-LS6-LS364/400-LQ9
  • 1.8 Ratio
  • 8mm Pedestal Mount Stud
  • Each

  • Scorpion Racing Products SCP1099-1 Details

    Chevy V8 LS1-LS2-LS6-LS364/400-LQ9 / 8mm Pedestal Mount Stud - Non-adjustable. No machining required.

    SCORPION LS ROCKER ARMS INSTALLATION INSTRUCTIONS:

    Part Numbers SCP1098 and SCP1099

    LS1, LS2, LS6, LS364/400, LQ9 V-8 Rocker Arms

    Please read instructions carefully and completely before beginning. The most important thing to know is always do one cylinder at a time and turn engine in the normal direction of rotation while installing. Follow directions closely and installation is easy. If you have any problems please call our Tech Support Line. We will be glad to walk you through your installation.

    Scorpion Tech Support: 352-512-0800

    Removal of the OEM Rocker Arms:

    This should be done one cylinder at a time, with extreme caution. You must make sure each valve is completely closed before removing the rocker bolt. Failure to do so will result in stripping out the threads. After removing all rockers you can also remove the one-piece factory rocker arm stand, this will not be used.


    The first step is to make sure the pushrods are still in the middle of the lifters by spinning them while lightly pressing down. (If using 1.8 ratio rockers, you must check the pushrod clearance on the cylinder head.) Next, you must lube the top of the pushrods with Scorpion Cam & Lifter Installation Lubricant (part # SRPAL4-1 or SRPAL8-1). Install the rockers one cylinder at a time. You must rotate engine in the normal direction of rotation on #1 cylinder until the intake pushrod goes completely up and just starts to return. This will ensure you are on the heel of the exhaust lobe of the cam and are ready to install your exhaust rocker arm. Lube the pushrod seat in the rocker with Scorpion Cam & Lifter Installation Lubricant or oil. Next, place the ARP washer provided on the factory bolt with the flat side facing down. Lube the washer and threads with oil only. Place the bolt through the rocker arm - the flat of

    the trunnion must face up. Next, place the pedestal over the bolt with the radius matching the bottom of the trunnion. Now lay the U Channel on the cylinder head (open side up).

    Place the flat of the pedestal in the U Channel. Screw the bolt down until no lash is felt. Spin pushrod to make sure you're in the pushrod seat. Now torque to factory specifications.

    Note: The last 1/2 to full turn will be snug on lifters that are pumped up with oil. This is very common and of no concern, torque to factory specifications.

    Next rotate the engine in the normal direction of rotation until exhaust rocker starts to open exhaust valve - this means the intake rocker is ready to be installed. Repeat same procedure as you did with exhaust. Place the ARP washer provided on the factory bolt with the flat side facing down. Lube the washer and threads with oil only. Place the bolt through the rocker arm - the flat of the trunnion must face up. Now place the pedestal over the bolt with the radius matching the bottom of the trunnion. Place the flat of the pedestal in the
    U Channel. Screw the bolt down until no lash is felt. Spin pushrod to insure you're in the pushrod seat. Now torque to factory specifications.

    Checking lifter preload with an aftermarket cam:

    With the engine in the proper position, install the rocker and lightly tighten the attaching screw with your fingers. Once you're at zero lash, set your torque wrench to the specified torque and tighten the attaching screw. The screw should turn another 1/4 to 3/4 turn (1/8 to 1/4 turn with short travel lifter) until the torque wrench clicks. Ifitis less than 1/4 turn, a longer pushrod is needed. If it is more than 3/4 turn, a shorter pushrod or shimming the pedestal is needed. Scorpion offers shims in .020" thickness, part number SCPRS.020 (set of 32 pieces).

    Note: Due to tighter clearances (spring travel, piston to valve, retainer to seal) the lesser preload is recommended. If your engine's RPM level is raised high enough so that the lifters go into a pump-up situation, it is better to limit the amount of preload to prevent mechanical interference.For example, if you have .050" lifter preload and have lifter pump-up at higher RPM with a 1.7 ratio rocker, this momentarily equates to .085" more valve lift (.050" at the lifter x 1.7 = .085" at the valve). This could cause momentary mechanical interference and component failure.

    IMPORTANT:

  • Pushrod wall thickness must be .080" minimum.

  • Scorpion does not recommend going higher than the factory RPM limit with stock valve spring pressures.

  • When using a camshaft other than stock, you must check for mechanical interference and follow the camshaft manufacturer's valve spring pressure, lifter preload and maximum RPM recommendations.

  • On stock upgrades using 1.8 ratio rockers, SRP1218 higher load valve springs are recommended to control the increased valve opening and closing rates.

    PD-2/12

  • Specifications:

    Manufacturer's Part Number:
    SCP1099-1

    Scorpion Race Series Rocker Arms are lightweight for maximum performance and known for superior quality as well as being the quietest rocker arms on the market. Micropolished finish for maximum durability and blue anodized for additional protection.

    Features
  • Available in many ratios
  • Clear 1.625 valve springs
  • Handles up to .950 lift & 950 lbs open spring pressure
  • CNC Machined Aerospace-grade 7000 series Aluminum
  • Centerless Ground Fulcrum
  • Needle Bearing Fulcrum & Roller Tip
  • Lifetime Warranty

    JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

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