October 25, 2011Ok so I score this 5.7 vortec out of a 98 100k miles complete motor, starter all the accys EVERYTHING.. The complete uncut harness and the ecu.... and I payed....get this.... 275 for it all... Talk about a beautifull day in central Texas... Ok so as tempting as it is to spend a few hours tomorow and put it in... I think I am going to do somethings first the thing is what to do.. I am forsure putting an oil pump and main bearings in since it is sittin in the bed of my truck and not under the hood... I am replacing the head gaskets, intake gaskets, and valve cover gaskets. I am thinking about putting a cam in. Are there any cams any one would recommend? I want it to sound good with a good lope but nothing too outrageous. The main reason I am swapping the 5.7 in place of the 4.3 is to be cool. The 4.3 has plenty of power, but I want more. I take alot of road trips that some times have me going up 2 mile long hills with 7% or some times better grades. I dont want to downshift, my 4.3 can almost do it, well I guess it can but way out of the power band so I have nonuts (kinda like donuts). My mother has a 98 z71 with a 350 and he truck takes these hills with no problem. So I figure if I can find the right cam in this motor. I should be able to maintain speed up these hills with no problem.. (Being able to smoke the occasional rice burner would be super cool too) but what is most important is sound. I am putting a flowmaster system in so I know that will help a bit (though am open to suggestions for exhaust as well im thinkin american thunder) This is a project truck and my end result is a daily driver that I can take to a show if I so choose.
One thing I do have a question about is my flywheel. The donor truck was an automatic, my truck is a standard. Can I take the flywheel off of my 4.3 and put it on the 5.7? I know they share alot being the 4.3 is a 5.7 minus 2 cyl. I am just unsure about balance and what not.
Another question is clutches. I am already planning of course on replacing my clutch. I want something that grips but I am not sure I want to go with a brand like centerforce.
Headers? I know they are not created equal. Im thinking just about any headers should bolt up to the stock exhaust right?
I guess my last question is, the mounts... I shouldnt have to do any thing about that right? The new motor has the mounts still... it should drop in and mount right up?
Im thinkin since I got the complete system, motor, harness, and ecm. This should be a pretty easy swap with no modifications or problems. The motor was running right before it was pulled... Nothing was disconnected or removed.
I should be able to just drop the motor in, bolt down the ecm and plug everything up and connect the fuel line. Start her up and drive right?