Mast Motorsports

Mast Motorsports is the world leader in hand built LS engines.  We build more Hand Built LS engines than anyone and believe using the finest parts available allows us to build the BEST LS engines in the world.  

Looking to increase the performance of your LS powerplant?  Mast Motorsports has custom cast heads for every LS engine 3.890" bore and up!  Custom cast in the USA so you know the quality and craftsmanship of our heads is the best available.