Description
Rebuilding an aging 80″ Evolution engine wastes time and money when you can drop in a completely new long-block with modern S&S engineering and immediately reclaim reliable power. This bolt-in replacement uses your existing carburetor and ignition setup, cutting costs while delivering the durability and performance you’ve been missing. Skip the rebuild—upgrade instead.
TECHNICAL SPECIFICATIONS
- Direct bolt-in replacement
- 1984–1999 H-D Evolution compatible
- 3-1/2″ bore, 4-1/4″ stroke
- 8.4:1 compression ratio
- 508 cam profile
- S&S performance heads
- Forged rocker arms
- 585 valve springs
- Flat-top cast pistons
- S&S standard oil pump
- Stock-height configuration
- EFI compatible (tuner required)
- Existing manifolds fit
- Wrinkle black finish
- Carburetor and ignition not included
- Made in USA
- Two-year warranty
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