Quote:
Originally Posted by Grumpy old man
Looks like it's stretched from the straightening process ,rather than work it any more place some 1/8 thick washers under the pan ,between the pan and block loosely install the 4 corner bolts (NO GASKET ) then start all the rest of the bolts using the largest washer that will fit in the oil pan rail ,Starting from the center slowly work out going from side to side to evenly tighten down the pan to it's mating surface , this should bring it back to a usable pan once gasket is installed . Try it it works .  |
If your engine is still in the truck, the above method should get it pretty close. You should probably aim to get it even within the thickness of a gasket.
Leaks from the rear main are a completely different beast. You will need to check your crankshaft to see if a groove has worn in. If so apply either a sleeve or remove & repair/replace the crankshaft. Getting the new seal in place while under the truck can be tedious. I have had to repeat the job three times in a month until I got it right.