12 Bolt.com
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All Products

 Many used engines in stock, if you don't see it , ASK.
At 12Bolt, we try our best to offer the highest quality parts at affordable prices. You will not find hyped up, exaggerated claims about racing potential. You will find, real world, proven, tested parts. This is the place to find the Chevy 250-292 Inline 6 parts.

Oct 1, 2011. 12bolt is proud to offer the P.E.S product line! In the 70's, 80's and 90's and 2000's Clyde Norwood Owner of Precision Engine Service was a leader in inline race part development. Head development included the 1st bolt in lump kit. Later came the PES Ram intake manifold that proved itself to win many races.  
THE PRODUCTS LISTED IN THIS CATALOG ARE INTENDED FOR RACING PURPOSES & SHOULD BE INSTALLED IN ACCORDANCE w/ STATE REGULATIONS PERTAINING TO EMISSION STANDARDS.  IT IS ALSO RECOMMENDED THAT ALL SMOG CONTROL & CATALYTIC CONVERTERS BE RETAINED AS REQUIRED BY LAW.  CALIFORNIA VEHICLE CODE SECTION 27156 PROHIBITS THE ADVERTISING, OFFERING FOR SALE, OR INSTALLATION OF ANY DEVICE WHICH MODIFIES A VEHICLE’S EMISSION CONTROL SYSTEM.  12Bolt LLC Duals HAVE NOT YET RECEIVED AN EXEMPTION FROM THIS CODE SECTION, & ARE, THEREFORE, NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON VEHICLES EQUIPPED w/ CATALYTIC CONVERTERS.

NEW PARTS ARE ADDED OFTEN! Look at the aluminum finned valve cover for Chevy inline 153  4cyl and 6 Cyl 194-230-250-292.
Also the 2 piece timing cover.
Alternator/ PS/AC Brackets Chevy Inline 6
Bolt In Lump Kits
Performance Cylinder Head Parts
Exhaust
Shortblocks
Pistons
Camshafts
Rods
Intakes
Accessories
Side covers
Valve Covers
Mounts 230-250-292
Breather Adaptors
Engine Stand
Performance Dampers
Torque Plate
Distributors
Misc
Carburetors
Timing Covers
Turbo Manifold
Bearings - Gaskets- oil pump
NOS Inline 6
NOS GM Inline 6 and V8 Parts
Engines
Air Cleaners Used
 

  • Home
  • Store
    • Valve Covers
    • Side Covers
    • Performance Cylinder heads and Parts
    • Exhaust
    • Accessories
    • Alternator and Power Steering
    • NOS GM Inline 6 and V8 Parts
    • Turbo Related
    • Bolt In Lump Kits
    • Breather Adaptors
    • Pistons
    • Rods
    • Intakes
    • Mounts
    • Timing Covers
    • Engines
    • Camshafts
    • Shortblocks
    • Engine Stands
    • Harmonic Balancers
    • Bearings-Gaskets-Oil Pump
    • Torque Plate
    • Distributor Blueprinting
    • Carburetors
    • Air Cleaners Used
    • Vehicles
    • 12 Bolts and Parts
  • Inline 6 Articles
    • Me and My Turbo
    • Sissell Literature circa 1988
    • Sunset Chevy
    • 2 HP Per Cubic Inch
    • Cotton Perry
    • Six Abuse
    • Six In a Row Makes it GO
    • Soup of the Day
    • Stovebolts Storm Again
    • Stovebolt Storm Part 2
    • Straight Six Shooter
    • The Buzzin Half Dozen
    • Turbo Tornado
  • Lump Head information
    • General Head Information
    • Inline cylinder head flow
    • Bolt in lump installation instructions
  • Services
  • Gearing Calculator
  • Photos
    • 12 Bolt Pics
    • Inline 6 Pics
    • 292 Turbo EFI
    • Shop Tour
  • Videos
    • 12 Bolt
    • Inline 6
    • Customer Cars
  • Links
  • Tech Tips
  • Wanted
  • About Us
  • Contact
  • Inline Engine Build Ideas
  • Jacob's Journey