[coachk64]

I'm looking to replace the Cylinder Head on my '83 Interstate and I'm coming up with some conflicting information.
Are all the 1100 cylinder heads the same from 1980-1983 or are there some differences? Could the cylinder head from a 1981 GL1100 fit my 1983 GL1100?
Thanks in advance for some solid info.

 

[Broke Winger]

The only internal differences in the motors were in the transmission gearing and the location of the neutral light switch location. The heads are all the same.

 

[coachk64]

Thanks for the quick reply Brokewinger, that's the answer I was looking for.

 

[Zeke66]

I always thought they were the same, but they have different part numbers from engine number 2009049. They could still be the same head but I don't know. Maybe someone else can help with this.

 

[ekvh]

The 83 had different intake valves, they were flat across the face. Should have a teeny bit more compression. I read that on another forum. The feeling was the valves could be interchanged with no problems. The heads should be the same, but I can't swear to it.

 

[gaswing]

The heads are the same on them all, just the valves are different on the 1983. You can use any GL1100 complete head on any year GL1100.