Truck Repair: Flywheel replace 72 GMC Jimmy 350cid/Auto trans, dowel pins, gmc jimmy

Question
My hunting truck won't start and I think there are teeth missing off flywheel.  Have bought flywheel to fit.  What's best/simplest way to install it?  I've never broken engine from tranny before and need some help.  Your detailed directions will be appreciated.  Was having problem starting Jimmy and shadetree mechanic replaced starter--problem began. He replaced 2 more flywheels with broken teeth and then said the parts house had sold him the wrong starter (gearing-wise).  He supposedly replaced starter with correct one but within 6 months, same problem.  Starter will turn but not turn engine over.

Thanks in advance!

Answer
Hello Gregg,
Well, my first comment is,
1.they may have sold the wrong starter,
2.it may have been the correct starter, but just need shims,
3.the replacement starter, even if correct, may have been damaged by chunks of teeth lodged between other teeth.

Next question, if it is a hunting truck, is it four wheel drive? Makes it harder to do at home, but still do-able.
I really think you should go to a parts house, like where you got the starters and flywheels, and get a chiltom manual for that truck, which will have pictures, and step-by-step.
At the public library, in the refference section, they have all types of manuals you can read and copy.
Basically, you remove the transfer case, if there is one. Then disconnect the linkage and wires, and a vacuum hose.
Remove the inspection cover from the flywheel, and unbolt the torque converter from the flywheel.You want it to come out with the transmission, but be careful it doesn't fall out of the transmission as you remove it, since it only slides into the front of it, and needs to be meshed properly with the pump drive inside, so it is better to keep it from ever coming out.
Then, using a transmission jack, unbolt from the crossmember, remove the crossmember, unbolt trans from engine, and while lowering, and tilting, pull it away.
There are two dowel pins that align the engine and trans together.
Don't tilt it, or lower it so much that the distributor cap hits the firewall and breaks. You may want to block the rear of the engine some.

Always, before starting that kind of job, disconnect the battery.

When replacing, the torque converter will connect to the flywheel at any location, but start all the bolts, and run them up close, before tightening any of them, so there is enough slack to get them all started.

Now, I think you should go look at a book.
Good luck,
Van