Ok i just bought my motor without ECU or wiring. Im getting a custom harness made for my s10 but the ECU is a hurdle im looking at. Since i dont know what year the motor is will it affect getting an ECU and getting it tuned?

Eric

 

When you get a chance, find out what the part number is on the timing chain cover and post it. Either myself or someone else will be able to tell you what year motor you have.

 

well it has the vented Opti if that tells you anything. its a 4 bolt main motor.

 

if the opti is vented, then it's gotta be a 95-97 for sure. hope that helps...

 

These are the part numbers for the front timing covers: Model years 93-94...10128289 Model year 1995...10214196 Model years 96-97...12550032