The Melling 48561T-9 is a performance timing set for GM LS engines with a 3-bolt camshaft. The 9-keyway crank sprocket allows the cam to be advanced or retarded in small increments for degree-in tuning.
Specifications:
- Type: Performance timing set
- Engine family: GM LS (3-bolt camshaft)
- Adjustability: 9-keyway crank sprocket
- Includes: Timing chain with crank and cam sprockets
- Part number: 48561T-9
FAQ
What does the 48561T-9 fit?
It fits GM LS engines that use a 3-bolt camshaft. Confirm your engine uses the 3-bolt cam pattern rather than the single-bolt pattern.
What does the 9-keyway sprocket do?
The 9-keyway crankshaft sprocket lets you advance or retard camshaft timing in small steps to dial in power for your combination.
Is this a performance upgrade over stock?
Yes. It provides an adjustable, durable timing set for LS builds and is useful when degreeing an aftermarket camshaft.

