$ 1,425.00
$ 1,425.00
LS3 LSA 255cc 4.000"+ | Single CNC Cylinder Head
The ultimate upgrade for your LS3 or LSA engine is here. Mast Motorsports LS3/LSA 255 Black Label heads are at the forefront of power and performance. Designed from a clean sheet this head supports 600+ horsepower on stock bottom end LS3 engines with supporting modifications. If you are looking to upgrade your LS3 or LSA with the best aftermarket LS head on the market, look no further.
- Designed for LS short-blocks with 4.000" bore or larger
- The 6-Bolt design is compatible with GM LSX and World LSX blocks
- Accepts Gen IV LS3 valvetrain and intake manifolds.
- Uses a 2.165" intake valve and 1.600" exhaust valve
- 11 Degree Valve angle
- Has a 255cc intake port
- Has a 69cc combustion chamber standard
- Has a deck thickness of .750"
- Cast & Machined in the USA!
| Flow Data w/4.000" Bore Plate | ||
| Lift | Intake | Exhaust |
| 0.100 | 74 | 61 |
| 0.200 | 146 | 119 |
| 0.300 | 222 | 188 |
| 0.400 | 282 | 219 |
| 0.500 | 330 | 236 |
| 0.600 | 360 | 251 |
| 0.700 | 372 | 260 |
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-model-hsv-engine-ls3---6-2l,year-2015-make-holden,year-2015-make-holden-model-hsv,year-2015-make-holden-model-hsv-engine-ls3---6-2l,year-2015-make-holden-model-commodore-vf,year-2015-make-holden-model-commodore-vf-engine-ls3---6-2l,year-2016-make-holden,year-2016-make-holden-model-commodore-vf,year-2016-make-holden-model-commodore-vf-engine-ls3---6-2l,year-2017-make-holden,year-2017-make-holden-model-commodore-vf,year-2017-make-holden-model-commodore-vf-engine-ls3---6-2l,year-2007,year-2007-make-chevrolet,year-2007-make-chevrolet-model-suburban-1500,year-2007-make-chevrolet-model-suburban-1500-engine-l76---6-0l,year-2008-make-chevrolet-model-suburban-1501,year-2008-make-chevrolet-model-suburban-1501-engine-l76---6-0l,year-2009-make-chevrolet-model-suburban-1502,year-2009-make-chevrolet-model-suburban-1502-engine-l76---6-0l,year-2007-make-gmc,year-2007-make-gmc-model-yukon-xl,year-2007-make-gmc-model-yukon-xl-engine-l76---6-0l,year-2008-make-gmc,year-2008-make-gmc-model-yukon-xl,year-2008-make-gmc-model-yukon-xl-engine-l76---6-0l,year-2009-make-gmc,year-2009-make-gmc-model-yukon-xl,year-2009-make-gmc-model-yukon-xl-engine-l76---6-0l,year-2007-make-chevrolet-model-avalanche,year-2007-make-chevrolet-model-avalanche-engine-l76---6-0l,year-2008-make-chevrolet-model-avalanche,year-2008-make-chevrolet-model-avalanche-engine-l76---6-0l,year-2009-make-chevrolet-model-avalanche,year-2009-make-chevrolet-model-avalanche-engine-l76---6-0l,year-2007-make-chevrolet-model-silverado,year-2007-make-chevrolet-model-silverado-engine-l76---6-0l,year-2008-make-chevrolet-model-silverado,year-2008-make-chevrolet-model-silverado-engine-l76---6-0l,year-2009-make-chevrolet-model-silverado,year-2009-make-chevrolet-model-silverado-engine-l76---6-0l,year-2007-make-gmc-model-sierra,year-2007-make-gmc-model-sierra-engine-l76---6-0l,year-2008-make-gmc-model-sierra,year-2008-make-gmc-model-sierra-engine-l76---6-0l,year-2009-make-gmc-model-sierra,year-2009-make-gmc-model-sierra-engine-l76---6-0l,year-2007-make-chevrolet-model-silverado-2500-hd,year-2007-make-chevrolet-model-silverado-2500-hd-engine-ly6---6-0l,year-2008-make-chevrolet-model-silverado-2500-hd,year-2008-make-chevrolet-model-silverado-2500-hd-engine-ly6---6-0l,year-2009-make-chevrolet-model-silverado-2500-hd,year-2009-make-chevrolet-model-silverado-2500-hd-engine-ly6---6-0l,year-2010-make-chevrolet-model-silverado-2500-hd,year-2010-make-chevrolet-model-silverado-2500-hd-engine-ly6---6-0l,year-2007-make-chevrolet-model-silverado-3500-hd,year-2007-make-chevrolet-model-silverado-3500-hd-engine-ly6---6-0l,year-2008-make-chevrolet-model-silverado-3500-hd,year-2008-make-chevrolet-model-silverado-3500-hd-engine-ly6---6-0l,year-2009-make-chevrolet-model-silverado-3500-hd,year-2009-make-chevrolet-model-silverado-3500-hd-engine-ly6---6-0l,year-2010-make-chevrolet-model-silverado-3500-hd,year-2010-make-chevrolet-model-silverado-3500-hd-engine-ly6---6-0l,year-2007-make-gmc-model-sierra-2500-hd,year-2007-make-gmc-model-sierra-2500-hd-engine-ly6---6-0l,year-2008-make-gmc-model-sierra-2500-hd,year-2008-make-gmc-model-sierra-2500-hd-engine-ly6---6-0l,year-2009-make-gmc-model-sierra-2500-hd,year-2009-make-gmc-model-sierra-2500-hd-engine-ly6---6-0l,year-2010-make-gmc,year-2010-make-gmc-model-sierra-2500-hd,year-2010-make-gmc-model-sierra-2500-hd-engine-ly6---6-0l,year-2007-make-gmc-model-sierra-3500-hd,year-2007-make-gmc-model-sierra-3500-hd-engine-ly6---6-0l,year-2008-make-gmc-model-sierra-3500-hd,year-2008-make-gmc-model-sierra-3500-hd-engine-ly6---6-0l,year-2009-make-gmc-model-sierra-3500-hd,year-2009-make-gmc-model-sierra-3500-hd-engine-ly6---6-0l,year-2010-make-gmc-model-sierra-3500-hd,year-2010-make-gmc-model-sierra-3500-hd-engine-ly6---6-0l,year-2007-make-chevrolet-model-suburban-2500,year-2007-make-chevrolet-model-suburban-2500-engine-ly6---6-0l,year-2008-make-chevrolet-model-suburban-2500,year-2008-make-chevrolet-model-suburban-2500-engine-ly6---6-0l,year-2009-make-chevrolet-model-suburban-2500,year-2009-make-chevrolet-model-suburban-2500-engine-ly6---6-0l,year-2007-make-gmc-model-yukon-xl-2500,year-2007-make-gmc-model-yukon-xl-2500-engine-ly6---6-0l,year-2008-make-gmc-model-yukon-xl-2500,year-2008-make-gmc-model-yukon-xl-2500-engine-ly6---6-0l,year-2009-make-gmc-model-yukon-xl-2500,year-2009-make-gmc-model-yukon-xl-2500-engine-ly6---6-0l,year-2008-make-chevrolet-model-express-2500,year-2008-make-chevrolet-model-express-2500-engine-ly6---6-0l,year-2009-make-chevrolet-model-express-2500,year-2009-make-chevrolet-model-express-2500-engine-ly6---6-0l,year-2008-make-chevrolet-model-express-3500,year-2008-make-chevrolet-model-express-3500-engine-ly6---6-0l,year-2009-make-chevrolet-model-express-3500,year-2009-make-chevrolet-model-express-3500-engine-ly6---6-0l,year-2008-make-gmc-model-savana-2500,year-2008-make-gmc-model-savana-2500-engine-ly6---6-0l,year-2009-make-gmc-model-savana-2500,year-2009-make-gmc-model-savana-2500-engine-ly6---6-0l,year-2008-make-gmc-model-savana-3500,year-2008-make-gmc-model-savana-3500-engine-ly6---6-0l,year-2009-make-gmc-model-savana-3500,year-2009-make-gmc-model-savana-3500-engine-ly6---6-0l,year-2010-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2011-make-gmc,year-2011-make-gmc-model-sierra-2500-hd,year-2011-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2012-make-gmc,year-2012-make-gmc-model-sierra-2500-hd,year-2012-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2013-make-gmc,year-2013-make-gmc-model-sierra-2500-hd,year-2013-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2014-make-gmc,year-2014-make-gmc-model-sierra-2500-hd,year-2014-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2015-make-gmc,year-2015-make-gmc-model-sierra-2500-hd,year-2015-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2016-make-gmc,year-2016-make-gmc-model-sierra-2500-hd,year-2016-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2017-make-gmc,year-2017-make-gmc-model-sierra-2500-hd,year-2017-make-gmc-model-sierra-2500-hd-engine-l96---6-0l,year-2010-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2011-make-gmc-model-sierra-3500-hd,year-2011-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2012-make-gmc-model-sierra-3500-hd,year-2012-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2013-make-gmc-model-sierra-3500-hd,year-2013-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2014-make-gmc-model-sierra-3500-hd,year-2014-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2015-make-gmc-model-sierra-3500-hd,year-2015-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2016-make-gmc-model-sierra-3500-hd,year-2016-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2017-make-gmc-model-sierra-3500-hd,year-2017-make-gmc-model-sierra-3500-hd-engine-l96---6-0l,year-2010-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2011-make-chevrolet-model-silverado-2500-hd,year-2011-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2012-make-chevrolet-model-silverado-2500-hd,year-2012-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2013-make-chevrolet-model-silverado-2500-hd,year-2013-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2014-make-chevrolet-model-silverado-2500-hd,year-2014-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2015-make-chevrolet-model-silverado-2500-hd,year-2015-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2016-make-chevrolet-model-silverado-2500-hd,year-2016-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2017-make-chevrolet-model-silverado-2500-hd,year-2017-make-chevrolet-model-silverado-2500-hd-engine-l96---6-0l,year-2010-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2011-make-chevrolet-model-silverado-3500-hd,year-2011-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2012-make-chevrolet-model-silverado-3500-hd,year-2012-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2013-make-chevrolet-model-silverado-3500-hd,year-2013-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2014-make-chevrolet-model-silverado-3500-hd,year-2014-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2015-make-chevrolet-model-silverado-3500-hd,year-2015-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2016-make-chevrolet-model-silverado-3500-hd,year-2016-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2017-make-chevrolet-model-silverado-3500-hd,year-2017-make-chevrolet-model-silverado-3500-hd-engine-l96---6-0l,year-2010-make-chevrolet-model-express-2500,year-2010-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2011-make-chevrolet-model-express-2500,year-2011-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2012-make-chevrolet-model-express-2500,year-2012-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2013-make-chevrolet-model-express-2500,year-2013-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2014-make-chevrolet-model-express-2500,year-2014-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2015-make-chevrolet-model-express-2500,year-2015-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2016-make-chevrolet-model-express-2500,year-2016-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2017-make-chevrolet-model-express-2500,year-2017-make-chevrolet-model-express-2500-engine-l96---6-0l,year-2010-make-chevrolet-model-express-3500,year-2010-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2011-make-chevrolet-model-express-3500,year-2011-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2012-make-chevrolet-model-express-3500,year-2012-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2013-make-chevrolet-model-express-3500,year-2013-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2014-make-chevrolet-model-express-3500,year-2014-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2015-make-chevrolet-model-express-3500,year-2015-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2016-make-chevrolet-model-express-3500,year-2016-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2017-make-chevrolet-model-express-3500,year-2017-make-chevrolet-model-express-3500-engine-l96---6-0l,year-2010-make-gmc-model-savana-2500,year-2010-make-gmc-model-savana-2500-engine-l96---6-0l,year-2011-make-gmc-model-savana-2500,year-2011-make-gmc-model-savana-2500-engine-l96---6-0l,year-2012-make-gmc-model-savana-2500,year-2012-make-gmc-model-savana-2500-engine-l96---6-0l,year-2013-make-gmc-model-savana-2500,year-2013-make-gmc-model-savana-2500-engine-l96---6-0l,year-2014-make-gmc-model-savana-2500,year-2014-make-gmc-model-savana-2500-engine-l96---6-0l,year-2015-make-gmc-model-savana-2500,year-2015-make-gmc-model-savana-2500-engine-l96---6-0l,year-2016-make-gmc-model-savana-2500,year-2016-make-gmc-model-savana-2500-engine-l96---6-0l,year-2017-make-gmc-model-savana-2500,year-2017-make-gmc-model-savana-2500-engine-l96---6-0l,year-2010-make-gmc-model-savana-3500,year-2010-make-gmc-model-savana-3500-engine-l96---6-0l,year-2011-make-gmc-model-savana-3500,year-2011-make-gmc-model-savana-3500-engine-l96---6-0l,year-2012-make-gmc-model-savana-3500,year-2012-make-gmc-model-savana-3500-engine-l96---6-0l,year-2013-make-gmc-model-savana-3500,year-2013-make-gmc-model-savana-3500-engine-l96---6-0l,year-2014-make-gmc-model-savana-3500,year-2014-make-gmc-model-savana-3500-engine-l96---6-0l,year-2015-make-gmc-model-savana-3500,year-2015-make-gmc-model-savana-3500-engine-l96---6-0l,year-2016-make-gmc-model-savana-3500,year-2016-make-gmc-model-savana-3500-engine-l96---6-0l,year-2017-make-gmc-model-savana-3500,year-2017-make-gmc-model-savana-3500-engine-l96---6-0l,year-2010-make-gmc-model-yukon-xl-2500,year-2010-make-gmc-model-yukon-xl-2500-engine-l96---6-0l,year-2011-make-gmc-model-yukon-xl-2500,year-2011-make-gmc-model-yukon-xl-2500-engine-l96---6-0l,year-2012-make-gmc-model-yukon-xl-2500,year-2012-make-gmc-model-yukon-xl-2500-engine-l96---6-0l,year-2013-make-gmc-model-yukon-xl-2500,year-2013-make-gmc-model-yukon-xl-2500-engine-l96---6-0l,year-2010-make-chevrolet-model-suburban-2500,year-2010-make-chevrolet-model-suburban-2500-engine-l96---6-0l,year-2011-make-chevrolet-model-suburban-2500,year-2011-make-chevrolet-model-suburban-2500-engine-l96---6-0l,year-2012-make-chevrolet-model-suburban-2500,year-2012-make-chevrolet-model-suburban-2500-engine-l96---6-0l,year-2013-make-chevrolet-model-suburban-2500,year-2013-make-chevrolet-model-suburban-2500-engine-l96---6-0l,year-2016-make-chevrolet-model-suburban-3500-hd,year-2016-make-chevrolet-model-suburban-3500-hd-engine-l96---6-0l,year-2017-make-chevrolet-model-suburban-3500-hd,year-2017-make-chevrolet-model-suburban-3500-hd-engine-l96---6-0l