I've been lurking here for a long time, but I finally have a question. I'm wanting to swap in a 6.0 for my 4.8 and I was wondering what are the steps involved in starting a new engine. I've swapped Gen I small blocks, but not one of these new engines.

There isn't a distributor, so how do you prime the oil pump? Or do you have to? Can you just crank it and hope it gets oil pressure?

Are there any other steps involved in this swap besides just replacing the engine, plugging it all in and filling it with oil?

 

anyone? I've done a search, and looked through my manuals and can't find anything about it.

 

I dont know how to prime the oil pump
but I would at least turn it over a few times by hand
to check for piston to valve clearance
if youve been inside it
and possibly unhook the coils and spin it with the starter
a few times

maybe someone else will chime in

 

I would pull the fuel pump relay and disconeect the coils and spin it over for a few. Be sure to listen for noise.....

Hell, I just fired my 6.0 right up in the old truck

 

What blown said,also remove the spark plugs so it will spin fast and easy.Maybe spin for two 10 second intervals

 

I would do the same as above. Just unhook the coil and pump relay and spin it over a couple of times. this will get the oil to the top and then plug everything in a listen and watch carefully for a bit.

 

Yep, that's the best advice ( pulls FP relay and disconnect coil packs ). Just be sure to turn it over in short bursts, like 5 seconds at a time. This will keep the starter from burning up.
You should see some pressure building within 4-5 cycles and you're safe to light it up!

 

I always disassemble the oil pump and pack the gears with vaseline to help it catch prime faster. Then do what the others are suggesting-spin it over without sparkplugs.

 

Thanks for your help.

I guess the answer was kind of obvious. I just didn't want to waste a couple thousand on a stupid mistake.

 

Not obvious or stupid by any means! The GenIII engines are quite a bit different than the pre-1998 SB motors. Just requires a few variances on existing knowledge.
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