Aluminum Roller Rockers for Oldsmobile 350-455 V8 with 1.6 Ratio & 7/16" Stud

Vehicle Info Needed

PROFORMPART NUMBER: 778-66860C

Aluminum Roller Rockers for Oldsmobile 350-455 V8 with 1.6 Ratio & 7/16" Stud

Name: Aluminum Roller Rockers for Oldsmobile 350-455 V8 with 1.6 Ratio & 7/16" Stud
Brand: PROFORM
SKU: 778-66860C
Price: 254.99 USD
Availability: InStock

^$254⁹⁹

Ships on Sep 04, 2026

Lowest Price Guarantee

Oldsmobile

Oldsmobile 350-455 V8
1.6 Ratio
7/16" Stud
16/pkg
Rated for up to 450 lbs of Open Load Pressure
Precision machined
Lengthen Valve Train Component Life
Reduce Wear On Valve Stem Tips

Part TypeRocker Arm

BrandPROFORM

Package Height3.1

Package Width11.6

Package Length13.0

Weight6.8 PG

Part CategoryPerformance Parts

Arm FinishBlue anodized

Rocker Arm Ratio1.6

Shims IncludedNo

PositionN/A

Stud Size 0.4375

Rocker Arm Nut StylePolylock

QuantitySold as a set of 16

Rocker Arm Mounting StyleStud

Engine Make/SizeOlds 350-455

Self-AligningNo

Rocker Arm StyleFull roller

Rocker Arm Body StyleStandard

Arm MaterialAluminum

Ratio1.6

Part FitmentSemi Universal

Vendor Part Number66860C

Package Qty1

Package TypeEA

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