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Ross Ford Flathead Pistons Mercury & Ford Flathead Stroker Pistons and Ring Kits

 

 

Ross Ford and Mercury Flathead pistons are faithful reproductions of Art Sparks' original forged flathead Ford piston design. We have forged Flathead pistons available for Ford and Mercury stock stroke crankshafts as well as stroker flat head crankshafts. These pistons are machined on special ROSS flat head forgings for maximum strength, durability and minimum weight. Ross Ford flathead and Mercury flathead pistons are balanced to plus or minus 2.5 grams throughout the complete set.

If needed you can buy replacement pistons one at a time as needed. The unique skirt design allows the pistons to work properly under intense heat and high side loads without scuffing or splitting cylinder walls. Most normally aspirated pistons are designed to operate at .004 piston skirt to cylinder wall clearance.

 

 

Ross Forged Mercury and Ford Flathead Piston and Ring Sets

Ross Ford Flathead Pistons Mercury Flathead Piston set with Rings

Flathead Ford Pistons Flathead Mercury Pistons

The flathead Ford and Mercury engines are making a big comeback and are very popular now in hot rods, street rods and nostalgia drag cars. Start your flathead V8 engine rebuild off right with a set of Ross flathead pistons and piston rings. See the chart below for the wide range of available bore sizes, strokes, and piston ring types. They are available for standard stroke crankshafts, as well as stroker flathead engines. The flathead stroker pistons are available in several sizes. Why spend as much, or more, for antiquated stock type cast replacement pistons, when you can enjoy the numerous advantages of a modern high quality Ross forged piston set in your engine?

Mercury Flathead Ford Flathead Forged Piston and Ring Sets by Ross

Ross Ford and Mercury Flathead Piston Set Specifications

Piston sets include:

  • 8 Forged flathead pistons
  • 8 Piston pins .750 inch diameter weighing 120 grams each
  • Piston ring set Genuine GRANT cast rings 3/32 3/32 5/32. Piston sets noted with a * in the bore column include Ross premium ductile moly top file fit, ring set with 1.5mm, 1.5mm, 3.0mm size rings
  • Spirolox pin retention lock rings
  • Dome height is .187 inch
  • Use with a 7.000" rod length.
  • Can be used with forced induction engines using up to 5 psi boot
  • Can be used with nitrous systems of up to 250 horsepower
  • The top ring land is .280" wide to accommodate relieved engine blocks

OEM Standard bore size was 3.187 inches

Make

Bore

Stroke Grams

C.H.

Part #
Ford 3.187 3.750 289 1.561

80582


Add To Cart

Mercury 3.187 4.000 289 1.436

80583


Add To Cart

Mercury 3.248 * 4.000 327 1.436

80579


Add To Cart

Mercury 3.248 * 4.125 326 1.374

80580


Add To Cart

Ford 3.312 3.750 315 1.561

80563


Add To Cart

Mercury 3.312 4.000 314 1.436

80564


Add To Cart

Mercury 3.312 * 4.000 323 1.436

99817


Add To Cart

Mercury 3.312 4.125 312 1.374

80572


Add To Cart

Mercury 3.312* 4.125 313 1.374

99818


Add To Cart

Ford 3.312* 4.250 320 1.311

80575


Add To Cart

Ford 3.312 4.250 310 1.311

80574


Add To Cart

Ford 3.342 3.750 328 1.561

80573


Add To Cart

Mercury 3.342 4.000 327 1.436

80567


Add To Cart

Mercury 3.342 4.125 329 1.374

80568


Add To Cart

Ford 3.375 3.750 345 1.561

80569


Add To Cart

Mercury 3.375 4.000 345 1.436

80570


Add To Cart

Mercury 3.375* 4.000 359 1.436

99819


Add To Cart

Mercury 3.375 4.125 347 1.374

80571


Add To Cart

* this set uses millimeter size ring grooves and comes with a Ross ductile moly top file fit, ring set ring widths are 1.5mm, 1.5mm, 3.0mm

 

If you do not see the V8 Ford flat head pistons with the specs you need please visit our custom pistons page and we will be glad to assist you with a custom set for your high performance, racing or restoration engine project.

 

 

Ross Racing Pistons Catalog Home Page

 

 

 

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