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COMP Cams 1678-1 Ultra Pro Magnum Rocker Arm, Full roller, Each
COMP Cams 1678-1 Ultra Pro Magnum Rocker Arm, Full roller, Each

COMP Cams 1678-1 Ultra Pro Magnum Rocker Arm, Full roller, Each

L92 Chevy LS V8, L99 Chevy LS V8, LS3 Chevy LS V8, LS9 Chevy LS V8, LSA Chevy LS V8, Chromoly

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COMP Cams 1678-1 Ultra Pro Magnum Rocker Arm, Full roller, Each
COMP Cams 1678-1 Ultra Pro Magnum Rocker Arm, Full roller, Each
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We estimate this item will ship on or before May 24th.
Part # 28216781
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$31.99
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 3 business days for COMP Cams to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Rocker Arm Style:
Full Roller
Rocker Arm Ratio:
1.8
Rocker Arm Nut Style:
Polylock
Material Type:
Chromoly
Finish:
Black Oxide
MFG. Part #:
1678-1
Sold in Quantity:
Each
Rocker Arm Body Style:
Standard
Rocker Arm Mounting Style:
Pedestal
Self-Aligning:
No
Shims Included:
No
GTIN Code:
036584240662
Color:
Black

Info

COMP Cams Ultra Pro Magnum Roller Rocker Arm, 1.8 Ratio, Pedestal Mount, LS3, Single Piece.

As LS engines continue to grow in popularity, COMP Cams has expanded its line of rocker arms to build components specific to LS applications. New Ultra Pro Magnum Rockers are made from investment-cast 8650 Chromemoly steel, utilize upgraded Trunions and needle bearings over stock and are stronger, stiffer and more durable than the stock parts. They also feature a 1.8 ratio (compared to the stock rockers’ 1.7) and utilize a roller tip instead of a slider. The higher ratio and increased stiffness make these rockers a great option for increasing lift without changing cams. This increased stiffness, along with the upgraded Trunion package and roller wheel, also makes them a perfect choice when running aftermarket valve springs. The rockers are available in a bolt-down design that uses stock rocker stands and in a stud-mount option for customers looking for an adjustable valve train. The stud-mount version is perfect for individuals running mechanical lifters as well. COMP Cams LS Ultra Pro Mangum Rockers Arms are available for LS1, LS2, LS3, LS6 and LS-based truck engines and come in individual sets or kits featuring studs and guide plates. Kits do not include pushrods, but they are available separately.

  • Investment cast 8650 chromemoly body and arched, weblike design deliver increased strength and rigidity while reducing moment of inertia
  • Withstand valve spring pressures up to 850 lbs.
  • Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
  • Increased retainer and valve spring clearances allow use of large diameter springs, retainers and +.050" locks without clearance or fitment issues
  • Feature oversized trunnions, precision-sorted needle bearings and hardened roller tips

Application

2008-15 Chevy 376
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
  • To get the longest life and most performance out of your engine, it's important to have the valve lash set correctly. Here we show you how to set valve lash on a small block Chevy using a hydraulic lift camshaft.
    Learn More
  • Once you're ready to start selecting valve train components, we have some useful tips and tools that should boost your performance. We discuss proper valve-springs, pushrod length, and rocker arm ratios.
    Learn More

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