GM 3 or 4 speed aluminum manual bellhousing with a casting number of 3849309 for 1964 1965 1966 1967 Chevy II / Nova models using a Muncie T10 or Saginaw transmission. Input hole is 4 5/8" and fits 153 tooth flywheels. Bell has been cleaned up and painted aluminum at some point. no cracks or breaks and all the threads look good. Pivot ball stud also looks good. Free shipping USA