I have a 1990 camaro r.s. its an auto tranny (700r4 over drive) it originally had a 5.0 I swaped it for a 5.7 and now it won't run right it seems to be running to rich I've changed everything from, ( ECM computer, ignition module,rebuilt the throttle body,new o2 sensors, new plugs and wires and yet nothing helps. Looking for some other ideas.
(Car symptoms)\/

Has bad hesitation when accelerator is put to the floor. (About 6 sconds)

Is reqlly jumpy when at a red light or stop sign (like its going to stall but doesnt

Very jumpy tac

Smokes light black (not alot of smoke barley visible)

Lost ablut 30% of its power

 

Have you hooked up a scanner and watched the coolant temperature sensor and map ?
The 350 requires more fuel and runs lean unless you swap to tbi truck injectors and have a new calibration made for the ecm.

 

How do I get it calibrated

 

You have alot of options, tbi chip.com, PCM for less . Did you upgrade the injectors ?

https://www.thirdgen.org/forums/engi...sion-prom.html

 

I think so I ordered ones for , caprice , camaro, fire bird, it said they are higher performance injectors

 

If there were ordered for a caprice 350 the flow rate is higher the pegs when the injector wires go will be orange for 55#hr injectors.

 

The wires are green yellow. Red and blue and the clips are a brownish orange

 

 

I tried posting a pic but dnt no how. There the exact same as the pic u posted. That is the correct one?

 

Yes those are the correct ones, they identify them with the manufactures part number and gm colored the terminal legs orange like the picture would be correct.