Rebuilding a Chevy 6 head. Head already has new guides installed and hardened exhaust seats installed. We are cutting the valve bowls and performing valve enlargement from 1.72/1.5 to 1.84/1.6. This is one step in rebuilding a head. We sell complete heads with all performance modifications done. contact [email protected] or go to www.12bolt.com Sound was wacked by Youtube 12:00-16:00 because of a radio playing in background
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