Above is another image of the same ECM at a different angle showing where the 2 wire harness plugs go in

Above is an image of the Label on the ECM for a V8

This label tells all.  It is the way you find out what the ECM is programmed for...

First off the Service Number 1227747 lets you know you won't be swapping any wires in the plugs that insert into this ECM.  Other years of vans my vary but I have been told that on my 1989 this will be a drop in.

The ASDU is a "BROADCAST CODE" if you look at my list below of KNOWN BROADCAST CODES you will see that this ECM came from a  1991Chevrolet Fullsize P/U with 5.7l 350 and Automatic transmission 700r4/4L60

Above is an image of the ECM with the access door removed to reveal the chips inside

Here we have the PROM and CALPAK chips.  They are programmed at the factory for the vehicle they will be running in.  They can be reprogrammed.  When you hear people talking about having added a POWER CHIP in their Car or Truck, This is what they are talking about.

Above is an image of the kick panel that covers the ECM location

 Above is an image of the kick panel removed

Above is an image of the ECM pulled out of the kick panel

 Above is an image of the ECM label for my 1989 Safari 4.3L EFI/700r4 

Above is an image of the V8 conversion motor mounts

 I figured it was worth the $ to just buy these mounts, though, you can modify the existing motor mount tower locations to be 3 inches forward if you don't want to buy these mounts.  I wanted the SUREFIT of using these mounts  instead of having to measure and move the towers forward and weld a plate and all that work.  I had to notch the driver's side mount you see on the left because I was using headers.  The header on the driver's side hit the motor mount before I made the notch.  If you plan to use Exhaust Manifolds then you won't have to worry about it.

Hey.. It's me, Will.  I look confused don't I?  Am I forgetting anything? What am I doing with my hand?  Gang signs?  What set you from?

Me again!  Just looking at the motor.  I need to get to work.

We tried to get the motor in with BOTH motor mounts on the block and the Headers.

Well.. The headers were no problem but we ended up having to take off the DRIVER'S side motor mount to get the motor in all the way.

There's Ron helping line up the motor with the tranny.

It really didn't take much work to get it in there.  About 30 minutes to get it in AND mounted to the tranny and motor mounts with 3 people.

Here's how I strung the chain for the lift.  Not much slack.  It makes it a whole lot easier this way cause you can lift the motor higher without hitting the top of the firewall.  Some people have done this with the intake manifold installed already.  As you can see, I did not.

Here's what the motor mounts look like doing their job.  I guess I could have used some new rubber in my motor mounts.  Oh Well, too late now.  This is something you might want to consider if you plan to do this to your van.

Ok.. Intake can go on.. TBI can go on. and basically its time to remount the accessories to the motor. Things sure are going smooth.  I like it!

Accessory bracket it in place.  You will have to bend you old SUPPORT BARS that go on the back of the accessory bracket.  They wont line up with the intake manifold on the 350 so just make some bends.  You WILL need them.. Your accessory bracket will crack without proper support.  Just do it and save yourself a future headache.  You have TONS of room to work right now so don't skip it and wish you HAD done it later when the engine compartment is tight and cramped after you put everything back together.

From here its all down hill. Just mount your V6 parts back on.  STARTER, WATER PUMP, COIL, MAP SENSOR, KNOCK SENSOR, TEMP SENDER, OIL SENDER, and so on.  It will all swap over.  Then put on the V8 Specific stuff too.  Like the Distributor and also DON'T FORGET that you CAN use your old TBI unit but you MUST put in 5.7 injectors.  To do this you will need a TBI rebuild kit.. Its about $40 from your GM dealer and you will need it to replace gaskets when you change injectors.  Besides.   You need to clean up that old TBI.. I know mine was really dirty.  As far as that goes..  Just put the rest of the hoses and wiring back on the motor.  It's straight forward.  You will have to trim your FAN SHROUD top/bottom pieces.  DON'T just leave them off or you will have cooling problems.  Take your time and trim them JUST enough to clear the alternator and main Pulleys. If you HACK them up you will regret it.  I know you are SO CLOSE to driving it at this point but don't get hasty with the cutting.  Do it right the first time.  The BIGGEST complaint you will hear from ASTRO/SAFARI V8 owners is OVERHEATING problems.  You can seriously cut your chances of having a problem if you do as little cutting as possible.