LS1 295 cc 4.125"+ CNC Cylinder Head

  • Sale
  • $ 1,249.99
  • Regular price $ 1,399.99


It's too big they say....Mast has a different view!  When paired with a large displacement engine our LS1 295 heads are a force to be reckoned with.  Designed for all out performance and power this head really is a beast.  We have customers running their best times after ditching the competitions 245cc heads and stepping up to these BIG boys.  In fact one customer reported that he gained 7 tenths in the 1/8th mile by switching to the Mast 295 heads from a 245 on his 427, making NO other changes!  Now that is a serious upgrade.

  • Designed for any new Gen IV short-block with 4.125" bore or larger
  • The 6-Bolt design is compatible with GM LSX, RHS & World LSX blocks
  • Utilizes GM Gen IV LS7 valve train and rocker arms
  • Fits any GM LS cathedral port intake manifold
  • Uses a 2.250" intake valve and 1.600" exhaust valve
  • 12 Degree Valve angle
  • Has a 295cc intake port
  • Has a 70cc combustion chamber standard
  • Has a deck thickness of .750"
  • Cast & Machined in the USA!