The Melling 3-494SD is a timing set for 1965 to 1974 Oldsmobile 400 and 455 V8 engines. It replaces the factory timing chain and sprockets to restore precise camshaft timing.
Specifications:
- Type: Timing chain and gear set
- Engine: Oldsmobile 400 and 455 V8
- Years: 1965-1974
- Includes: Timing chain with crank and cam sprockets
- Part number: 3-494SD
FAQ
What engine does the 3-494SD fit?
It fits 1965 to 1974 Oldsmobile 400 and 455 V8 engines. Verify your engine casting and sprocket style before ordering.
What comes in the set?
The set includes the timing chain plus the crankshaft and camshaft sprockets to replace the complete factory timing assembly.
Will this quiet a noisy timing cover?
A worn chain is a common source of timing cover noise and timing drift. A fresh Melling set restores correct timing and reduces slack.

