1978 motor in a 1981 frame?

[Suncoast400]

A careless 300 year old man totaled my beloved 1978 SOHC XS400.

I found a good rolling chassis on craigslist but its a 1981. Will a 1978 motor mount in that frame easily,?

 

[bcware]

As long as they are both SOHC it should be fine. Around 81 they started making DOHC xs400s that are totally different (seca, maxim, etc).

 

[Suncoast400]

Thanks. I had a feeling they were the same or at least close enough to be interchangeable. I am going to look at this 81, it may be just the donor I need.

 

[Wolfe_11B]

Frame mounts changed over the years but the motors mounting holes stayed the same I believe

 

[Suncoast400]

Okay, I kind of figured some mounta may be different to accomadate part changes and whatnot. I want to use my motor because I know its pristine, so as long as that fits then I am satisfied. My wrecked '78 is essentially a cafe/brat stle with the abdomen gutted, and I am using very few OEM mounting points anyway because I rearranged a bunch of stuff for aesthetics. The general consensus seems to be the motor will bolt in. The rest I can Frankenstein