Wiseco Forged Aluminum Pro Tru Street Series Pistons
Made in the USA
Big Block Chevy 489 Standard Bore Dome +21cc
|
Kit Part Number |
PTS522AS |
|
Bore Size |
4.250" |
|
Compression Height |
1.270 |
|
Stroke |
4.250" |
|
Rod Length |
6.385" |
|
Pin Diameter |
.990" |
|
Dome Volume |
+21cc |
|
Comes w/ Rings |
Yes |
|
Cubic Inch |
489 |
Compression Ratio Chart
|
112cc Head |
119cc Head |
|
10.8:1 |
10.1:1 |
Note: Big Block Chevy 15cc and 21cc domes are solid and may be cut to flat tops. (2.76 grams per cc)
Approximately 2.7cc's lost for every .025" cut from dome rise.
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