CAST MAST
Mast Motorsports’ Black Label LS1, LS3, and LS7-style cylinder heads are cast and CNC-machined in the USA.
They feature CNC-machined runners and combustion chambers, .750 inch thick decks and a six-bolt-per-cylinder mounting pattern to reduce the possibility of blown head gaskets due to large amounts of boost or nitrous oxide.
Fully assembled heads have valve springs rated for up to .650 inches of valve lift. Summit Racing currently offers these fully assembled Black Label cylinder heads:
LS1 Cathedral Port
- 225cc intake runners, 70cc chambers with 2.080/1.570 inch valves
- 245cc intake runners, 70cc chambers with 2.165/1.600 inch valves
LS3 Rectangular Port
- 240cc intake runners, 61cc chambers with 2.080/1.570 inch valves
- 255cc intake runners, 69cc chambers with 2.165/1.600 inch valves
LS7 Rectangular Port
- 285cc intake runners, 70cc chambers with 2.200/1.600 inch valves
- 305cc intake runners, 70cc chambers with 2.250/1.600 inch valves
More information from www.summitracing.com ENDS.
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