Track OrderOrder Status & ReturnsHelpGift CardsHelpHelp CenterPhone1-800-345-4545
Shop by Category

Most Popular

Restoration

Shop All Categories

Shop New ProductsShop ALL BrandsTech ArticlesDeals
MY ACCOUNT
Order Status & Returns
CONTACT USHELP CENTER
Logo
Cart0
$000
Small Block Chevy Roller-Tip Rocker Arms with 1.5 Ratio & 3/8" Stud
InfoVehicle Info Needed
PROFORMPART NUMBER: 778-66906B

Small Block Chevy Roller-Tip Rocker Arms with 1.5 Ratio & 3/8" Stud

$10299
3 left in stock
ShippingShips on Sep 08, 2026
Lowest PriceLowest Price Guarantee
Best Value
Stamped Steel Roller Tip Rocker Arms for 1955-1986 Small Block Chevy [1.5 Ratio for 3/8 in. Stud]

555-20180

Stamped Steel Roller Tip Rocker Arms for 1955-1986 Small Block Chevy [1.5 Ratio for 3/8 in. Stud]

$12999

Stamped Steel
    Small Block Chevy Roller-Tip Rocker Arms
  • 1.5 Ratio
  • 3/8'' Stud
  • Stamped Steel with Long Slot
  • 16/pkg

  • Extra Long Slot
  • Eliminates Rocker To Stud Interference

    Proform Roller-Tip Rocker Arms feature a roller to reduce friction and wear at the valve stem tip. Made of chrome moly or stamped steel, steel rockers feature long slots to stop rocker-to-stud interference on high-lift camshafts. These roller-tip rocker arms are perfect for almost all average street engine because they are more rigid and durable than the stock rocker arms.

    Show More

Part TypeRocker Arm
Product LineProform Roller-Tip Rocker Arms
BrandPROFORM
Package Height2.4
Package Width9.6
Package Length9.8
Weight4.91 PG
Part CategoryPerformance Parts
Arm FinishBlack anodized
Rocker Arm Ratio1.5
Includes ShimsNO
Shims IncludedNo
PositionN/A
Stud Size 0.3750
Nut StyleCrimp Nut
Slot StyleExtra-long
Rocker Arm Nut StyleSelf-locking
QuantitySold as a set of 16
Rocker Arm Mounting StyleStud
Engine Make/SizeChevy Small Block (262-400)
Self-AligningNo
Rocker Arm StyleRoller tip
Rocker Arm Body StyleStandard
Arm MaterialSteel
Ratio1.5
Part FitmentSemi Universal
Vendor Part Number66906B
Package Qty1
Package TypeEA
No Questions
No Reviews

Items You Need

Premium 10-Blade Feeler Gauge Kit 0.015 in. to 0.035 in. (0.381mm to 0.889mm)

JEGS

Premium 10-Blade Feeler Gauge Kit 0.015 in. to 0.035 in. (0.381mm to 0.889mm)

Part Number : 555-80502
$1777$20.99
You Save$3.22
Master Pushrod Length Checker Kit

JEGS

Master Pushrod Length Checker Kit

Part Number : 555-80670
$10399$114.99
You Save$11.00
Valve Lash Wrench Set Nut: 1/2" Set Screw: 1/8" & 3/16"

PROFORM

Valve Lash Wrench Set Nut: 1/2" Set Screw: 1/8" & 3/16"

Part Number : 778-66778
$3599
Valve Lash Wrench and T-Handle Set [Cuts Adjustment Time in Half]

PROFORM

Valve Lash Wrench and T-Handle Set [Cuts Adjustment Time in Half]

Part Number : 778-66779
$3499
Valve Lash Wrench Set Nut: 9/16" Set Screw: 3/16" & 7/32"

PROFORM

Valve Lash Wrench Set Nut: 9/16" Set Screw: 3/16" & 7/32"

Part Number : 778-66780
$3099
Valve Lash Wrench Set Nut: 5/8" Set Screw: 3/16" & 7/32"

PROFORM

Valve Lash Wrench Set Nut: 5/8" Set Screw: 3/16" & 7/32"

Part Number : 778-66781
$3199

ITEM YOU MAY ALSO CONSIDER

66906C Engine Roller Rocker Arm Set; 1.5 Ratio 3/8 Stud; Stamped Steel; Fits SB Chevy

PROFORM

66906C Engine Roller Rocker Arm Set; 1.5 Ratio 3/8 Stud; Stamped Steel; Fits SB Chevy

Part Number : 778-66906C
$13499
Stamped Steel Roller Tip Rocker Arms for 1955-1986 Small Block Chevy [1.5 Ratio for 3/8 in. Stud]

JEGS

Stamped Steel Roller Tip Rocker Arms for 1955-1986 Small Block Chevy [1.5 Ratio for 3/8 in. Stud]

Part Number : 555-20180
$12999$140.39
You Save$10.40
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning
Your Cart

Your shopping cart is empty!