BCBC 3-509S Engine Timing Set

Engine Timing Set Overview

This Melling engine timing set, part number 3-509S, is built for stock-style engine rebuild work where accurate valve timing matters. It combines steel camshaft sprocket construction with included sprockets and a standard replacement design for a practical rebuild solution.

Compatible with a wide range of Chevrolet, GMC, and Isuzu applications, this timing set supports service work on engines used in the Chevrolet Astro, Chevrolet S10, and GMC Safari. The 3-509S is part of Melling’s Stock line, which focuses on timing components for standard, HD, and performance service levels.

Key Features

• Standard replacement engine timing set for rebuild and service applications
• Steel camshaft sprocket for durable gear construction
• Sprockets included for a complete timing component package
• Non-adjustable keyway design for stock-style installation
• Part number 3-509S for catalog and fitment reference

Detailed Description

Melling 3-509S is an engine timing set designed for applications that require matched timing components during engine repair or rebuild. The kit is built around steel sprockets and is intended to provide the timing hardware needed to restore proper camshaft and crankshaft synchronization. As a standard replacement set, it suits stock engine service where original-style timing component geometry is required.

This part cross-references Cloyes C-3090 and FEL-PRO 73112 for the same application. It fits 1992-1998 Chevrolet Astro, 1995-1998 Chevrolet Blazer, 1992-1998 Chevrolet C1500, and other listed Chevrolet, GMC, Oldsmobile, and Isuzu models. For buyers searching for a Chevrolet S10 timing set, GMC Safari timing set, or Isuzu Hombre engine timing set, 3-509S provides a direct catalog match for the listed stock applications.

What It Helps Address

• Worn timing components found during engine teardown
• Incorrect camshaft-to-crankshaft timing after rebuild work
• Noise or wear associated with aged timing chain components
• Need for matched sprockets during stock engine service
• Replacement of timing parts on listed Chevrolet, GMC, Oldsmobile, and Isuzu engines

Installation Notes and Tips

Verify engine code and timing component layout before ordering, since fitment varies across the listed Chevrolet, GMC, Oldsmobile, and Isuzu applications. Compare the existing sprocket style and chain setup to confirm the correct replacement. Professional installation is recommended for engine timing service, and timing marks should be aligned carefully during assembly.

Quality Assurance

Melling positions this Stock line around quality materials, workmanship, and application coverage for standard, HD, and performance timing needs. The 3-509S is built as a standard replacement timing set for rebuild-focused service.