The 2408 has the wider opening for the 7010 wide feeder. The dealer told me you could not make a 2208 work. The 2408 does not have the two speed gear box because the 7010 and 8010 have the variable speed feeder drive. Get a 3408.
You can run a 2208 on a 80/7010 combine. Not sure if you have to change a gear or anything in the gear box on the head but you CAN run it on those machines. The only difference is the 2208 has the 2spd gearbox where the 2408 does not.
However gpmci is right... get a 3408 (or some other head... geringhoff/drago...) if you are looking to buy a head for it. If you have a 2208 already you can use it with a few changes.
You can't give away a 2200 series head in my area.
Bleedred may be correct about the 2208 head working on a 7010. It would not be the first time a dealer gave me bad info. Maybe Case has a kit for it. Anyway, check out the header section under 2208 head problems before you get one. Some people like them but more do not. A brand new one might go awhile without problems but is nothing like the old 1000, 900, or 800 heads as far as long term reliability.
The fix for me is to get a different head.
Neighbor runs a 2212 (20'') on his 8010. Not sure if you have to get a kit or not for it but you would have to make the feeder opening bigger and the way the combine holds the head is different. Then you would have to get the hydraulic/electronic connection block. I would think thats about it. Not sure on cost. My neighbor actually really likes having the 2spd gear box. He runs his on the high spd and then slows his feederhouse way down so the head still runs fast enough but the feederhouse runs slow to save wear on the chain.
But if you don't own the 2208 now... don't buy one. They will take in WAY more trash then any other head, you will have trouble with gearboxs and the cantilevered stalk rolls. And it won't process the stalks NEAR as good as the 1000 series or any other tip to tip knife configuration.
I would strongly recommend getting the new 3400 series head (if you can) or another brand.
I haven't seen any information regarding the 3400 yet. So if I can't get one of these for this fall what is the next best option? Adapt an off brand?? Deere?? From what I have read it sounds like the 2200/2400's are junk. I don't know of anyone in our area that handles geringhoff/drago.