Just saw a performance manifold in Summit racing for this....
Cross-Fire injection was new for 1982 and found on Camaros and Corvettes. The setup featured a pair of throttle bodies mounted on an intake manifold that recalled the one found on the original Z28. This was trick-looking stuff that helped user in the modern era of fuel injection.
Cross-Fire injection performed so well, in fact, that it was gone after the 1984 model year. (Okay, in reality GM’s Tuned Port Injection made its big debut for 1985.)
Photos courtesy RM Sothebys.
Just saw a performance manifold in Summit racing for this....
The graybeards at my work referred to them as "Cease-fire Injection" and "Misfire Injection". According to them, they never ran properly off the showroom floor
Nick you beat me to it! I cant remember what old article I read, but I still laugh when I think of crossfire being referred to as cease fire injection. Wasn't this still available in the c4?
In reply to jorcane :
84 only I believe.
Only time in "modern" times that it was acceptable to go backwards and put a carburetor on.
82 and 84, so technically it was both a c3 and c4 thing. I actually actively want an 84 c4 that still has a complete crossfire setup. I'm completely confident i can make it better than good enough. 
If it was not throttle body injection it would be fine.
I can fix that...
Mod the manifold for port injection and rock and roll.
In reply to bentwrench :
I read on The Internet, so you can trust that this next bit is true, that the Cross-Fire manifold is dead on a 350 by 4500 RPM. It's another one of those situations where Chevy/GM put pretty decent truck engine parts in their sporty cars and called it a day, only this time the system wasn't reliable either. I think I'd rather go scrounging for a TPI setup or mod some 3rd party single-plane intake to add injection to. Or just revert back to a carb.
Vigo said:82 and 84, so technically it was both a c3 and c4 thing. I actually actively want an 84 c4 that still has a complete crossfire setup. I'm completely confident i can make it better than good enough.
Dad had one. It ran good. All the torque of a TBI 350 and non of the fun of a sports car engine. His had the 700R behind it.
Not sure a TPI flows much better....
But at least port injection cures the evil that throttle body injection is.
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