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  Probe Industries SRS Pistons - Ford 302/393W Dome Top +8.0cc Twisted Wedge
Ford 302/393W +8.0cc Dome Top SRS Pistons

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SRS Probe SRS forged pistons are designed for high performance street and most racing applications. SRS pistons are available in a wide variety of designs, tuned to achieve the highest performance possible. Any combination from ultralight 2bbl oval track to high performance street, to heavily boosted race only cars will find Probe SRS Forged Pistons to be the perfect piston.

  • 2618-t61 Forged Aluminum
  • Lightweight wrist pins
  • Lightweight piston designs
  • Full floating wrist pins
  • Tight running clearances
  • Narrow piston rings
  • Low drag skirt design
  • Large variety of compression ratios
  • Design specific valve reliefs

PROBE Industries Forged Pistons - The Fastest, Most Powerful Pistons For the Money! Since 1987 Probe Industries has manufactured a wide variety of products ranging from lightweight billet rockers to forged pistons. Probe Industries is continually striving for excellence in offering a large selection of products to racers and automotive enthusiasts. Today, Probe forged pistons are a result of many years of technological advances in both forging and machine tool technology.

Item# Item Name Racer Price Qty Add
10471-030 SRS Pistons - Ford 302/393W Dome Top +8.0cc (+.030")
10471-040 SRS Pistons - Ford 302/393W Dome Top +8.0cc (+.040")
10471-STD SRS Pistons - Ford 302/393W Dome Top +8.0cc (STD)
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Technical Specs:
Item Code10471
Vendor NameProbe Industries
Product TypePistons
Product ModelSportsman Race Series - SRS
Engine Displacement (
Engine FamilyFORD-LINCOLN-MERCURY - Small Block 302 Based V8, Small Block 351 Windsor Based V8
Material2618-t61 Forged Aluminum
Base Bore (in)4.000
Stroke (in)3.000/3.850
Rod Length (in)5.090/5.956
Compression Height (in)1.600
Top TypeDome Top
Net Head Volume (cc)+8.0
Dome Height (in)0.250
Deck Thickness (in)0.200
Dome TypeTwisted Wedge
Valve Pocket Cutters2.150 I - 1.750 E
Valve Pocket Depth (in).150 I - .050 E
Weight Without Pin (g)492
Wrist Pin Diameter (in)0.912
Wrist Pin Length (in)2.500
Wrist Pin Weight (g)113
Pin Lock TypeDbl Spiral
Ring Set #315-0036
Top Ring Groove Size1/16 in.
Second Ring Groove Size1/16 in.
Oil Ring Groove Size3/16 in.
Top Ring Land (in)0.215
Second Ring Land (in)0.140
Bottom Ring Land (in)0.070
QuantitySold in sets of 8.
NotesDesigned for Twisted Wedge heads, will not fit Standard cylinder heads.

Compression Ratio:
Part NumberCylinder Head Volume
Ford 302
Ford 393W

Browse for more products in the same category as this item:

Pistons > Ford - 302 Small Block V8 > Solid Dome (Twisted Wedge)
Pistons > Ford - 351 Windsor Small Block V8 > Solid Dome (Twisted Wedge)
Make > Ford