strynbroen......looks like a CL motor on the bench.......the base motors are nearly identical but the oil-pump has a motor-mount lug on the CL and the crank-end is different because of no electric-starter / sprague clutch, the right sidecover is different fromt the CB motors to allow for the two different types of kickstarters, the top-plates are interchangeble depending on CL or CB mounts, and the left head has a tach-drive for the CB as well as the internal drive on the end of the CB left cam.
I had not yet seen a pic of the CB450 head adaptation. The Suzuki 400 head has the same stud pattern and dimensions for the supposedly 'easy' custom build. CB72 and CB77 racing kits included fully laced alloy wheels and carbs with separate high-speed jets with a direct air-tube to the right-side air-cleaner. The 1961 CB77 came equipped with a top-tree that held the combo speedo & tach so the light-bucket could be removed. Numerous variations have been tried including a CA77 cam swap to make a 'twingle' motor for Trials-use, and machining the cases to adapt a CL360 6-speed tranny.
These motors are the birth-place of the clutche-plates and cam-chains used in the CB750.
