Is this a Factory LT1? In your 1992 Z28?
fuel injected 350 V-8 would be my guess LT1 300 H.P.
Yes. There were no engine options, the LT1 was the engine.
No, it did not. It had a throttle body injected engine, 3 different engines available. The LT1 260 HP "Corvette" engine did not debut until '94, ran thru 'til '96. That was a Tuned Port Injected motor.
There was no LT1 in the 1992 B body, the LT1 was introduced in the F body and Corvette in 1993, and 1994 in the B and D bodies.
A vortec 5.7 is a lt1 based engine.
Yes it is a small block and NOT an LT1 engine. 5.7L is a 350 engine.
All SS Chevy Impalas' had the LT1.
Most likely needs a tuneup done. Check the timing and change the normal tuneup part.
Yes
By internal combustion
Lt1