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  Probe Industries SRS Pistons - Pontiac 400 Reverse Dome -21.5cc
  Pontiac 400 -21.5cc Reverse Dome SRS Pistons


 
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SPORTSMAN RACE SERIES Ð SRS

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
14850-035 SRS Pistons - Pontiac 400 Reverse Dome -21.5cc (+.030") $570.99
14850-065 SRS Pistons - Pontiac 400 Reverse Dome -21.5cc (+.060") $570.99
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Technical Specs:
Item Code14850
Vendor NameProbe Industries
Product TypePistons
Product ModelSportsman Race Series - SRS
Engine Displacement (cu.in.)400
Engine FamilyPONTIAC - Big Block V8
Material2618-t61 Forged Aluminum
Base Bore (in)4.125
Stroke (in)4.250
Rod Length (in)6.800
Compression Height (in)1.295
Top TypeReverse Dome
Net Head Volume (cc)-21.5
Dish Depth (in)-0.150
Deck Thickness (in)0.225
Valve Pocket Cutters2.400 I - 2.400 E
Valve Pocket Depth (in).230I - .230E
Weight Without Pin (g)478
Wrist Pin Diameter (in)0.990
Wrist Pin Length (in)2.500
Pin Lock TypeDbl Spiral
Ring Set #315-0032
Top Ring Groove Size1/16 in.
Second Ring Groove Size1/16 in.
Oil Ring Groove Size3/16 in.
Top Ring Land (in)0.280
Second Ring Land (in)0.165
Bottom Ring Land (in)0.085
QuantitySold in sets of 8.




Compression Ratio:
Part NumberCylinder Head Volume
72.0cc87.0cc
14850-03510.018.88
14850-06510.138.99




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