history precedes it. they live forever. keeping an eye on the t-chain & tensioners.
if it's a 22RE engine, it was never in a camry. so you might go to a shop and inquire as to what you may have.
if it does have the 22RE,
here's a list of the platforms it did come on,
"1985-1995 Toyota Hilux
1983-1985 Toyota Celica (actually an R engine-normally aspirated)
1985-1995 Toyota Pickup
1985-1995 Toyota 4Runner"
http://en.wikipedia.org/wiki/Toyota_R_engine#22R
as far as the specs on the engine, i'd assume, and this is a lot of assuming, it's a 89-95.5 gen since it's now in an obd1 platform.
so the only app for that, if i'm correct, would be found in hilux/runner manuals of that gen.
you can find that here,
http://www.ncttora.com/fsm/1993/engine.html
parent page,
http://www.ncttora.com/fsm
hope that helps......