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Speedmaster arm stud kits are made of 4140 Chromoly steel
capable of withstanding valve spring load up to 600lbs
even in the most extreme applications
Although the GM heads are good pieces
Speedmaster Twin-Carb combine two four-barrel carburetors to achieve the best balance of drivability
Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head Speedmaster arm stud kits areAll Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs. Standard valve sizes are 2. 020 in. Intake, and 1. 600 in. Exhaust, both +. 100 in. length. While the 2. 02" valves are standard issue, all of our 23deg. aluminum heads can accept a 2. 050 in. intake valve with minimal additional work.
