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  • 250 Ross Forged Flat Top piston set 5.7 rod and Long Rod 292

250 Ross Forged Flat Top piston set 5.7 rod and Long Rod 292

SKU:
$650.00
$650.00
Unavailable
per item

Finally a premium forged flat top piston at a affordable price! These pistons are custom made forĀ 12Bolt to be used in your rodded 250.

Also used with the Billet Long Rod 292

Included are:

Pins

1 set of Premium low friction rings Total Seal

Spirolocs if used on floating rods


Can also be used on pressed rods. Stock type.


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

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Top ring land is .300 thick to withstand the following. The rings are also a modern design. Low tension to provide better sealing and less HP wasting friction in the bore.
Applications include:

-Naturally aspirated

-Turbocharged

-Nitrous

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 to zero deck which also weakens the deck.
You will recieve 6 new pistons, pins, spirolocs, and full ring set. Shipping is 20.00 in the USA lower 48 states. Other areas email me with question. Tom@12bolt.com

True Flat top design, same as ran in the DYNO 250

 250 with 9.87 compression ratio with a 70CC chamber, most chambers will measure close to 74CC and give a 9.44CR
292 with 11.4 compression ratio with a 70 CC chamber, 74CC gives 10.9CR
Piston weight is only 488 grams

Includes pins

Includes spiroloc retainers

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

  • Home
  • Store
    • Valve Covers
    • Side Covers
    • Performance Cylinder heads and Parts
    • Rods
    • Pistons
    • Exhaust
    • Accessories
    • NOS GM Inline 6 and V8 Parts
    • Turbo Related
    • Bolt In Lump Kits
    • Breather Adaptors
    • Intakes
    • 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