Heavy duty high performance chrome moly pushrod fits:
68-69 400 ci
68-76 455 ci

Diameter: 0.3125 Inch
Length: 9.550 Inch
Material: Chrome Moly
Ball Diameter: 0.3120 Inch
End Type: Ball And Ball
Overall Length: 9.5700 Inch
Wall Thickness: 0.060 Inch