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Flat Top Dish Top Dome Top

Flat Top

SRS Forged Pistons
for Chevy 400

  • 2618-t6 forged aluminum

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

  • Fits most 23 degree heads


Our Tool Steel Wrist Pin Upgrade Is Now
 Available At A Substantially Reduced Cost!

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 PROBE FORGED PISTONS
Compression Ratio computed with .010 deck and .038 head gasket at bore +.125" (weights and compression ratios are approximate)
    Compression Ratio      
Bore Weight 58cc 64cc 68cc 76cc Part # Ring Set  

377 - 3.480 Stroke - 6.000 Rod- 1.425 C/H - .927 x 2.500 - 118 Gram Pin
4.155 440 11.57 10.77 10.30 9.48 13954-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 443 11.61 10.81 10.33 9.52 13954-040   Valve Relief Volume 4.0cc

400 - 3.750 Stroke - 5.700 Rod- 1.425 C/H - .927 x 2.500 - 118 Gram Pin
4.125 505 12.25 11.39 10.89 10.02 12338-Std 315-0032 Ring Grooves 1/16 1/16 3/16

4.155

507

12.39

11.52

11.02

10.14

12338-030

   Valve Relief Volume 4.0cc
4.165 511 12.43 11.57 11.06 10.18 12338-040    

400 - 3.750 Stroke - 6.000 Rod- 1.125 C/H - .927 x 2.500 - 118 Gram Pin
4.125 448 12.25 11.39 10.89 10.02 12339-Std 315-0021 Ring Grooves 1/16 1/16 1/8
4.155 450

12.39

11.52

11.02

10.14

 12339-030   Valve Relief Volume 4.0cc
4.165 454 12.43 11.57 11.06 10.18 12339-040    

400 - 4.000 Stroke - 6.000 Rod- 1.000 C/H - .927 x 2.500 - 118 Gram Pin
4.155 393 13.14 12.22 11.68 10.75 12339-Std 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 404

13.19

12.27

11.73

10.79

 12339-030   Valve Relief Volume 4.0cc

Back To:
 PROBE FORGED PISTONS

 

 

Dish Top

SRS Forged Pistons
for Chevy 400

  • 2618-t6 forged aluminum

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

  • Fits most 23 degree heads

 


Our Tool Steel Wrist Pin Upgrade Is Now
 Available At A Substantially Reduced Cost!

Back To:
 PROBE FORGED PISTONS
Compression Ratio computed with .010 deck and .038 head gasket at bore +.125" (weights and compression ratios are approximate)
    Compression Ratio      
Bore Weight 58cc 64cc 68cc 76cc Part # Ring Set  

400 - 3.750 Stroke - 5.700 Rod - 1.425 C/H - .927 x 2.500 - 118 Gram Pin

4.155

481

 10.90 10.24 9.85 9.15

12340-030

 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 485 10.94 10.28 9.88 9.19 12340-040   Dish Volume 15.0cc

400 - 3.750 Stroke - 6.000 Rod - 1.125 C/H - .927 x 2.500 - 118 Gram Pin
4.155 437 10.90 10.24 9.85 9.15 12341-030 315-0021 Ring Grooves 1/16 1/16 1/8
4.165 441 10.94 10.28 9.88 9.19 12341-040   Dish Volume 15.0cc

400 - 3.750 Stroke - 5.700 Rod - 1.425 C/H - .927 x 2.500 - 118 Gram Pin
4.155 486 10.09 9.53 9.19 8.60 13740-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 490 10.13 9.57 9.23 8.63 13740-040   Dish Volume 22.5cc
Back To:
 PROBE FORGED PISTONS

 

 

Dome Top

SRS Forged Pistons
for Chevy 400

  • 2618-t6 forged aluminum

  • Lightweight

  • Tight running clearance (.002 to .006)

  • Weight matched (+/- 2.5 grams)

  • Finished diameters +/- .00005

  • Fits most 23 degree heads

 
Our Tool Steel Wrist Pin Upgrade Is Now
 Available At A Substantially Reduced Cost!

Back To:
 PROBE FORGED PISTONS
Compression Ratio computed with .010 deck and .038 head gasket at bore +.125" (weights and compression ratios are approximate)
    Compression Ratio      
Bore Weight 58cc 64cc 68cc 76cc Part # Ring Set  

352 - 3.250 Stroke - 6.000 Rod - 1.375 C/H - .927 x 2.500 - 118 Gram Pin
4.155 TBA 13.74 12.52 11.83 10.67 14107-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 TBA 13.79 12.57 11.87 10.71 14107-040   Dome Volume 12.5cc

377 - 3.480 Stroke - 6.000 Rod - 1.265 C/H - .927 x 2.500 - 118 Gram Pin
4.155 486 13.09 12.05 11.45 10.43 13956-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 493 13.13 12.09 11.49 10.47 13956-040   Dome Volume 5.2cc

400 - 3.750 Stroke - 5.700 Rod - 1.425 C/H - .927 x 2.500 - 118 Gram Pin

4.155

502

13.94

12.84

12.20

11.11

13725-030

 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 506 13.99 12.89 12.25 11.16 13725-040   Dome Volume 4.8cc

400 - 3.750 Stroke - 6.000 Rod - 1.125 C/H - .927 x 2.500 - 118 Gram Pin
4.125 484 13.79 12.69 12.06 10.99 13726-Std 315-0021 Ring Grooves 1/16 1/16 1/8
4.155 490 13.94 12.84 12.20 11.11 13726-030   Dome Volume 4.8cc
4.165 494 13.99 12.89 12.25 11.16 13726-040    
4.185 TBA 14.10 12.98 12.34 11.24 13726-060    

400 - 3.750 Stroke - 6.000 Rod - 1.125 C/H - .927 x 2.500 - 118 Gram Pin
4.155 TBA 15.45 14.08 13.31 12.01 14108-030 315-0021 Ring Grooves 1/16 1/16 1/8
4.165 TBA 15.50 14.14 13.36 12.06 14108-040   Dome Volume 11.5cc

400 - 3.750 Stroke - 6.000 Rod - 1.125 C/H - .927 x 2.500 - 118 Gram Pin
4.155 TBA 15.41 14.13 13.40 12.15 14109-030 315-0032 Ring Grooves 1/16 1/16 3/16
4.165 TBA 15.47 14.18 13.45 12.20 14109-040   Dome Volume 7.5cc
Back To:
 PROBE FORGED PISTONS