Ok, heres the deal.

I have a buddy who wants to sell me his longblock LT1 motor out of his '97' trans am and i want to know how hard it would be to switch that motor in for my motor in my '95 Z28.

What i mean is, what is going to be different? I need to know it all...I know the computer is an OBDII instead of the OBD1 i have. Can I use my OBD1 with it or will i have to use the II?

Is there any other differences that I need to know about or any modifications i will have to do to make this motor work?

OH and the Reason im doing this is because even though my motor is running fine, besides a ticking lifter(i think), the T/A motor has only 70K miles and ran great when removed and mine has about double that and i want to do a build-up, so instead of rebuilding mine to put in a cam and all, i was just going to put this motor in.

 

It will be no problem, the 97 LT1 is virtually identical to the engine you have. Anything not included with the 97 engine could be taken from the 95 (accessories, etc) and it will all bolt up. Just be sure to change the knock sensor (the round thing in the pass side of the block) with the one from your 95, since you currently are OBD1 and the 97 engine is OBD@2. No other changes should be needed.

 

great, thanks a lot...yea, that was the only two things i was told would be different, the pcm and knock sensor. So, since the the 97 has extra sensors coming from the motor, do i just leave them hanging...i was told there is an extra one being the crank position sensor on the timing cover?

 

You will stick with your 95 PCM. Since there's no wire for the crank position sensor, you don't have to do anything. Leave the CKP sensor in the timing cover, to plug the hole. The 97 engine will also have a vacuum detector switch for the EVAP system on the passenger side. That can be eliminated, since your 95 PCM will not have a wire for that connection.

You may find some differences in the AIR setup, depending on whether the 97 had the AIR recall work done. The AIR connections on the manifolds are a different size as well.

Shoebox has a diagram of the EVAP components on his website (see part 11):

 

Althought the AIR equip is different, since i am replacing the complete motor, is there anything i have to do to it, or is it just a thing that is different?

Also, the EVAP part that is different, what exactly do i do to delete it, you can use the pic to tell me if possible, thanx

 

You could leave the vacuum switch there with no wire connected to it, or you could delete it and make sure you have a hose that connects p/n 12555606 to the lower nipple on the EVAP solenoid (#7).

You can leave the AIR parts where they are, but I'm not sure what happens when you don't connect the wiring harness that would exist in a 96/97 chassis.

 

95 didn't have a CPS, and 97 did. I'd use the 95 timing cover