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
  • >
  • Pistons
  • >
  • 250 with 5.7 Rod and Long Rod 292 18CC Dish Piston Ross

250 with 5.7 Rod and Long Rod 292 18CC Dish Piston Ross

SKU:
$900.00
$900.00
Unavailable
per item

Best piston/ ring combo you can buy for stock - performance rebuild.

  • Finally a premium forged 250 orĀ 292 piston at a affordable price! These pistons are custom made for 12Bolt for your rodded 250 or 292.
  • These can be used in a stock length 5.7"rod 250 or the Long Rod 7.130" 292

.040 overbore

9.5 Compression with 70CC chamber and zero deck in 292

Included are:

Pins

1 set of Premium low friction rings

Spirolocs if used with floating rods

Can be used on pressed rods. Stock type on 250

These are marked as 23 LBs only to be able to ship as a insured package.

  • Facebook
  • Twitter
  • Pinterest
  • Google+
Add to Cart
  • Top ring land is .300 thick to withstand the following.

    Applications include:
    -Stock rebuilds
    -Naturally aspirated
    -Turbocharged
    -Nitrous
  • Rings are a low tension Modern design. This gives better sealing and less loss of HP from friction.
  • The compression height of the piston is made so that only .015 is needed to be milled from the deck of engine to "Zero Deck" the engine. Stock pistons require .030-.035 or more to zero deck which also weakens the deck. The ring pack for these pistons is a design similar to modern setups. Designed for less ring drag and more power out of your engine. The pistons weigh about 200 grams less than a stock type piston.
  • 18CC dish (stock dish would be 30CC on a 292)
    For a 292 these pistons will provide  9.50 compression ratio with a 70CC chamber, most chambers measure 74CC as is and give a 9.12CR
  • For a 250 these pistons will provide 8.24 compression ratio with a 70CC chamber, most chambers measure 74CC as is and give a 7.95CR
  • Piston weight is only 492 grams

    Includes pins

    Includes spiroloc retainers

    Inlcudes Total Seal Brand rings 1/16 top- 1/16 2nd- 3/16 oil control


  • Can be mounted as a floating pin or pressed pin
 

  • 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