12 Bolt.com
  • 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
  • Store
  • >
  • Exhaust
  • >
  • Exh Manifolds Dual Chevy 194-230-250-292

Exh Manifolds Dual Chevy 194-230-250-292

SKU: Dual Manifolds Cer Dark
$350.00
$350.00
Unavailable
per item

Simply the best dual exhaust manifolds you will find for Chevy 194-215-230-250-292.

Heavy casting. Great finish. Made of Ductile Iron (higher steel content), not cast iron. These can be welded with stick or wire welding because they are made from ductile iron.

Made to fit ALL chassis that came with these engines from the factory (except as noted below)

Only offering these in coated.

Made to fit 2 1/4 " head pipes.

Hardware kit is included. Heavy gauge flanges

When installing, be sure to remove the threading in pins at front and rear of head at int/exh flange. Use a large pair visegrips to unscrew them. Use a short threaded stud in place.

Last picture is a example of the pipe (you supply) gasket and flange.

Recommended parts to go with these.

Heat plate if using Offy or stock intake

PERFORMANCE CLAMP KIT

Best Intake/Exh gasket

Fitment issues

These will not fit a Integral head engine.

62-67 Chevy II Nova with a stick shift. The Z bar will need modified to clear the rear manifold.

47-54 Chevy pickup- front manifold will need to have flange cut, reclocked to clear steering box. We have instructions for proper modification on 47-54 pickups. contact us

THESE MANIFOLDS 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.

  • Facebook
  • Twitter
  • Pinterest
  • Google+
Add to Cart
To install these manifolds, here are some tips.
1. The stock intake and Offy intake need to be trimmed to share 2 bolts.
2. It is best to heat the intake using water heat, we offer a heat plate to do this.
3. Take time to orient, position and maybe file the clamps to properly clamp intake/ exhaust equally.

 

  • 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