Since the flame is a genetic morph of the eastern now it would be possible to get hets. (and no hybrids or intergrades since they are all T.s.sitalis) That is assuming that the flame trait is a recessive one (like albinism). For a recessive gene to express itself (be visible) the gene has to be acquired from both parents. Since your current snake is normal (and we assume non het) it can not pass on the flame gene so none of your babies would show the flame trait but all your babies would be carrying the gene so they would be capable of passing that gene on in future matings.

If the flame trait is dominant then all babies produced would be flames.

If the flame trait is co-dominant then you could expect half your babies to be flames and half to be normal and there is no het. (like the pastel ball pythons)

there is also a category of incomplete dominance which would mean that any babies would show characteristics of both. (more red than a normal but not as red a flame for example.) I think this is the category that is most variable since you never know how much of the gene for a particular trait will express itself. I think a lot of the morphs in leopard geckos and bearded dragons work somewhat on this principle. you can have the two yellowest bearded dragons and yet some of the babies can turn out to be close to normal looking though it is generally accepted that the more of the trait the parents show the more the babies will show as well.

Thus endeth my brief genetics lesson. One of my worst classes in college was genetics. It was also one of my favorites. Very interesting but also can be very confusing and frustrating. We learned all that stuff on the first day and it got worse from there

I have also seen the term intraspecific hybridization used on some websites. It is defined as a mating between two animals of the same species but different subspecies (ie. Ts.sirtalis and T.s.infernalis.)