Wiseco Forged Aluminum Pro Tru Street Series Pistons
Made in the USA
Big Block Chevy 489 .30 Over Dome +21cc
Kit Part Number |
PTS522A3 |
Bore Size |
4.280" |
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 |
10.9:1 |
10.2:1 |
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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