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Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1
Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1

Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1

Chevy Small Block V8

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Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1
Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1
Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1
Long Slot Small Block Chevy Steel Rocker Arms, 1.5:1
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Part # 28711801
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  • Stock style or long slot
  • Fits S/B Chevy using 3/8" studs
  • Balls and nuts not included
  • Set of 16


MFG. Part #:


If you are looking to increase valve lift without swapping cams, a simple rocker arm upgrade can accomplish the task. By changing the ratio of your rocker arms, you increase total valve lift by multiplying the lobe height of the camshaft. More lift means more airflow and horsepower for a given valve size, assuming your cylinder heads can support it. This set of 1.5:1 long slot rocker arms are an excellent stock replacement if you are looking to replace a worn out set of rocker arms without making changes to valve lift.

These "long slot" rocker arms are the perfect upgrade for the budget-minded builder. Stock rockers can bind when used with high-lift cams. Here, the stud slot is machined with extra clearance for performance camshafts with up to .550" lift (when used with stock 1.250" diameter springs, 125 lbs max pressure). These stamped steel rocker arms work with 3/8" studs on 1955-85 style SBC heads (without self-aligning rockers). These stock appearing performance rocker arms are specially heat treated for maximum resistance to wear and flex.

  • High-ratio rocker arms are a great way to make your camshaft a little "bigger"
  • Long-slot rocker arms do not bottom out or bind up on the stud
  • Increase total valve lift 10% by changing your rocker arm ratio
  • Use with cams up to .550" lift and springs up to 125 lbs of pressure
  • Heat treated steel for maximum resistance to wear and flex
  • Stock appearing, with no moving parts to fall out or break
  • Fits 1955-85 style heads with 3/8" diameter studs

Making internal upgrades to your small block Chevy means getting the right combination of components for maximum performance and durability. When making a cam change, don't forget the other pieces necessary to a well-running SBC. Make sure you have the right combo, without breaking the bank, with a set of long slot rocker arms from Speedway Motors. Also, don't forget to check your valve guide clearance for the added lift!

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  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations


Q & A

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.
  • 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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