Looked at 91 d350, they were parting out , i thought i/c's didn't come out untill 92 .

 

91 1/2 was first for intercooler and overdrive. Also the first model with the cross on the grill. I don't know exactly when they started making the 91 1/2, but mine was manufactured in April of 1991.

 

Midway in 91 they added intercoolers, Known as the 91.5.

They are very cool because they have the SIMPLE 89-91 electrical system (for the most part)...but still have the I/C and stuff. 92-93 trucks had that stupid computer.

 

"i prefer not to associate with those of the robot race!" lol (early from squidbillies) for some reason i thought of that. the computer is not stupid, you just need to know how to talk to it brandon. haha

 

My trk., is a d350 91 mod. but the mfg., date on the door post is "2/90. and no i don't have a computooor, inside the fender well. I think i may be one of the lucky ones.

 

it may be a non I/C that someone put on! with factory parts or not?

 

^^^ i wish i had that under my hood! looks good