87 2.9 into 90, tips/advice?

[Earl43P]

Guy claims it's a low mileage engine, been in its original truck and a BII. Both got wrecked. May get it this evening if I can borrow my neighbor's truck.

Anything other than EGR that I need to address on this swap over?
It's got the exhaust manifolds and Y/H pipe still installed.

I figure on blocking off egr, running my 90 PCM and engine harness, keep the larger 87 throttle body.

Don't know if it came out of an Auto or Manual so might I have to swap over the crank pulley / harmonic balancer? Reason I ask is, I had no luck removing the one on the seized engine. Any tricks to that?

Once I pull the seized engine I have to drop the oil pan and loosen up the crank so I can get the torque converter off. I'll also hang onto its heads. Sure wish I had the cash to do an MO5D swap while I'm at it. Not out of the question tho.



I haven't done an engine replacement since 1977. Working solo, to boot.

I plan a redneck compression check (turn the crank with finger over each spark plug hole, fffft). Guy was adamant that it was a smooth running motor, which is why he pulled it and hung onto it. We shall see how each spark plug looks too.

http://www.therangerstation.com/forums/showthread.php?t=75681
I'll fix the photos. POS been sittin' back there a whole year already. I gotta get on the ball.

 

[Mike828]

Here's a post from AllanD to consider:

For best results you need to run the early throttle body with the early TPS sensor

Any "gain" you get comes from using 3/4 throttle with the "big" early TB
and getting the same ammount of air into the engine
(if you had a manifold vacuum guage you'd see that the big TB brings NOTHING to the party itself) but telling the coputer that it's at 3/4 throttle.

The way it works is by getting all the air you were before but keeping the engine management in "closed loop" (thus avoiding a full throttle signal that makes the management go into "open loop" (PIG RICH)

You'll also notice the throttle is more abrubt at lower part throttle settings.

People who have the big TB from the factory will tell you that
past 3/4 doesn't do much on a 2.9.

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