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68gmsee · 03-28-2009, 12:05 PM

As far as assembling now or waiting, that would be a preference thing.

But, I would prefer to assemble the engine to keep the moisture and dirt out. Either way, just make sure everything is coated liberally with breakin lube (cam, crank bearings) and heavy oil on the cylinder walls (I use STP).

I left mine sitting assembled for about 2 months with a tarp over with no problems.

It's better to break an engine in while your driving the truck but you can run it to make sure everything is working and have no leaks prior to installing. I've also done that before.

03-28-2009, 12:05 PM	#8
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Engine break in on a stand As far as assembling now or waiting, that would be a preference thing. But, I would prefer to assemble the engine to keep the moisture and dirt out. Either way, just make sure everything is coated liberally with breakin lube (cam, crank bearings) and heavy oil on the cylinder walls (I use STP). I left mine sitting assembled for about 2 months with a tarp over with no problems. It's better to break an engine in while your driving the truck but you can run it to make sure everything is working and have no leaks prior to installing. I've also done that before.