Ross 4.6 / 5.4 Forged Flattop Pistons & Rings 2V & 4V WITH RINGS

ROSS Forged 4.6 and 5.4 FLATTOP Pistons & Rings

Ross Forged Modular Ford pistons have exceptional features for all forms of street, strip, road race, and endurance applications. All Modular pistons are fully CNC machined from 2618-T61 exclusive forgings and utilize full floating lock rings.

Manufactured to fit a block height of 8.937"
Can be used with FORCED INDUCTION (Blowers and Turbos)
Can be used with Nitrous Oxide
Each set of pistons include Chrome Moly 5115 .866" diameter pins
Each set includes clips for full floating rods
Offset wrist pins for quiet operation
INCLUDES Piston Rings!!!

Drawing on nearly 30 years of piston design and manufacturing for all forms of motor sports, ROSS Racing Pistons has met the continual need for the most advanced forged pistons in the racing industry. Utilizing some of the most sophisticated design and analysis software, along with ultra modern CNC machining centers, ROSS has developed a dedicated line of forgings.

All ROSS Racing Pistons (since 1985) have been forged from 2618 billet bar stock and have been heat treated and aged to a T61 condition (2618-T61). 2618-T61 is the material that is used when fatigue resistance and durability are of prime importance by all premium racing piston manufacturers. This material has less than 1% silicon particulate content. High silicon content pistons (forged from 4032 or MS75) will not stand up to the most extreme stress placed on many racing pistons. If a crack starts to form in a high silicon piston it will continue until the piston experiences a catastrophic failure. Simply stated, adding sand to the aluminum only makes it more brittle. In the rare instance of a 2618-T61 piston cracking, the crack will continue to an area where the stress is not as great and will then stop. Another advantage of 2618-T61 over the high silicon pistons is the ability to keep its shape under extreme pressure and high RPM's. "Skirt Shrinking" is not a problem with ROSS Racing Pistons.

COMPRESSION RATIOS	2V NON PI	2V PI	4V ALL
Flat Top with 4.6 Engine	10.2:1	12.4:1	10.7:1
Flat Top with 5.4 Engine	9.6:1	11.0:1	9.8:1