Speed Pro Hypereutectic Pistons
Small Block Chevy 350
Size: STD
Rod Length: 5.7"
If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from FM244 aluminum alloy, which contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that todays top engine builders demand. They're ideal for use in high performance street, bracket racing, and oval track racing and will work perfectly with normal ring end gaps.
| Brand | Speed Pro |
| Part Number | H631CP |
| Bore | 4.000" |
| Piston Style | Flat Top with Two Valve Reliefs |
| Piston Material | Hypereutectic Aluminum |
| Compression Distance | 1.560" |
| Piston Head Volume | + 5.00 cc |
| Wrist Pin Style | Press-Fit or Floating |
| Pin Diameter | 0.928" |
| Piston Ring Thickness | 5/64" x 5/64" x 3/16" |
Compression Ratios w/ Stock Deck Height (9.025"):
|
58cc |
64cc |
68cc |
72cc |
76cc |
|
10.33 |
9.65 |
9.25 |
8.89 |
8.56 |
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