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Flathead Ford Aluminum 3-Ring Pistons, 3.75 Stroke, 3.3125 Bore

Specs
Sold in Quantity:
Set
Piston Diameter:
3.3125
Stroke:
3.75
Piston Style:
Flat Top
Piston Material:
Cast Aluminum
Garage Sale:
No
Flathead Ford Aluminum 3-Ring Pistons, 3.75 Stroke, 3.3125 BoreFlathead Ford Aluminum 3-Ring Pistons, 3.75 Stroke, 3.3125 Bore
Flathead Ford Aluminum 3-Ring Pistons, 3.75 Stroke, 3.3125 Bore

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Please NOTE the following about this product:

  • This item is sold as a set.

Details

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Q & A

What's in the Box

These flathead Ford 3-ring pistons are made of A332 aluminum and heat treated to a T-6 spec. They have a 5/64" first and second ring groove and the oil groove is 3/16". 

Sets include wristpins and locks. Rings sold separately.

You may also be interested in:

1939-53 Flathead Ford V8 4-Ring Pistons, 3-3/4 Stroke, .125 Over
SKU-91015901
                        

Original flathead pistons used four rings, were somewhat round, had questionable wrist pins and locks and were made of cast iron. These pressure-cast aluminum pistons share the four-ring design, but are cam ground and use modern steel wrist pins and real snap rings. They’re a great upgrade when rebuilding your 1939-1953 flathead Ford or Mercury V8 engine.

  • Original 4-ring design
  • Pressure cast aluminum construction provides great strength and durability
  • Precision cam ground
  • Modern steel wrist pins
  • Snap ring style retainer clips

Sizing based on original 3.188" bore. Fits .125" overbore size and 3.75" stroke crank. Sold as a set of 8.

Offenhauser 39-53 Flathead Ford 4-Ring Pistons, 3.75 Stroke/3.248 Bore
SKU-56042600
                        

Original Flathead pistons used four rings, were somewhat round, had questionable wrist pins and locks and were made of cast iron. These pressure-cast aluminum pistons share the four-ring design, but are cam ground and use modern steel wrist pins and real snap rings. They’re a great upgrade when rebuilding your 1939-1953 flathead Ford or Mercury V8 engine.

The original bore size was 3.188", which makes these .060" oversize. Sold in sets of eight.

  • Original 4-ring design
  • Pressure cast aluminum construction provides great strength and durability
  • Precision cam ground
  • Modern steel wrist pins
  • Snap ring style retainer clips
Arias Forged Flathead Ford Pistons, 3.75 Stroke
SKU-14528070
                        

If you are going to spend the time and money to build the flathead of your dreams, you just as well spring for Arias forged pistons. Arias forgings work great with nitrous and up to 10 psi on blown engines. They come as a set of eight and include wrist pins, locks and piston rings. They are a three ring design and work with the stock 7" rod length. Stock flathead bore size was 3.188"

Each piston set includes:

  • (8) Forged Aluminum Pistons
  • (8) Wrist Pins w/ Locks
  • (8) Cast Ring Sets
Hastings Rings SWY5075125 Flathead Ford 3-Ring Piston Set, 3.3125 Bore
SKU-41733125
                        

Hastings is the ring of choice for your vintage flathead Ford V-8. We have these premium 3-ring sets with 5/64" cast top, 5/64" cast second, and 3/16" chrome-edge oil ring. 

Each ring set includes all rings for (8) pistons.