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Street Race Truck More... The Toolbox
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$189.99
$154.99
Stainless Steel Roller Rocker Arm, BBC, 1.72:1 7/16 Inch
Stainless Steel Roller Rocker Arm, BBC, 1.72:1 7/16 Inch

Stainless Steel Roller Rocker Arm, BBC, 1.72:1 7/16 Inch

Chevy Big Block V8, Roller Rocker Arm Style, 1.72:1 Rocker Arm Ratio, 0.4375" Stud Size

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Stainless Steel Roller Rocker Arm, BBC, 1.72:1 7/16 Inch
Stainless Steel Roller Rocker Arm, BBC, 1.72:1 7/16 Inch
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Part # 91511781
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$154.99
$189.99
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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.

Details

Rocker Arm Style:
Roller
Rocker Arm Ratio:
1.72:1
Stud Size:
0.4375"
Stud Diameter:
0.438"
Rocker Arm Nut Style:
Polylock
Material Type:
Stainless Steel
MFG. Part #:
91511781
Sold in Quantity:
Set
Self-Aligning:
No

Info

  • 1.72:1 ratio with 7/16" stud diameter
  • Extra large full needle bearing trunnion
  • Withstands spring pressures up to 700 lbs
  • Chrome-moly push Rods recommended
  • Fits Big Block Chevy applications
  • Set of 16 rocker arms and poly locks
Some parts are not legal for use in California or other states with similar laws/regulations

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  • 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.
  • 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.

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