Topic: What does the last number mean?

[Blackhole]

When you are referring to your bike as a CB750k3 or a CB750K7...what does the last number mean?  My son and I are trying to bring a 78 CB750k back from the dead as his first bike.  We got it to run today but it is in need of a bunch more love.  I think some baffles will now be first on the list after hearing it with none!  My ears are still ringing and we had ear plugs in.  Boy I love it when they fire up for the first time but just have to wonder what the PO was thinking when they did what they did to this bike.  I wish I had all the parts that were removed and chucked...what a shame.  Thanks for the help on this question as it has just been bugging me.

[goldarrow]

And so your bike is K8

[Blackhole]

Thanks...that just seemed too simple

[Dream750]

Here’s how American Honda describes the CB750 K-series:

CB750 “K0” indicates the first model in a series. As updated versions were introduced K1,K2, K3, etc... were used to indicate new models. Frame and engine serial numbers are used to identify the model.

[Gordon]

The "K" numbers of the 750s matching the model year is just a coincidence due to K0 being made in '69-'70.  The other sohc4s don't follow the same pattern.  My 1976 550K is a K2.