87luxsprt said:injected. its a a 2013 5.3 has <a title="Shopping Link Added by SkimWords" class="skimwords-link" href="http://shop.ebay.com/i.html?_nkw=aluminum+heads" target="_blank" data-skim-node-id="185:injected.itsaa20135._2" occurrence="1" data-skim-product="431653" data-skim-creative="300003" data-group-id="0" data-skimwords-word="aluminum%20heads" data-skimlinks-editor="0" data-skimwords-id="431653">aluminum heads</a><span style="position: absolute;"></span><span style="position: absolute;"></span>. but since its out of the car. i wanna do what ever i need to do before i install. dont want anything crazy. its going into my daily driver
bigmandengo said:87luxsprt said:injected. its a a 2013 5.3 has <a title="Shopping Link Added by SkimWords" class="skimwords-link" href="http://shop.ebay.com/i.html?_nkw=aluminum+heads" target="_blank" data-skim-node-id="185:injected.itsaa20135._2" occurrence="1" data-skim-product="431653" data-skim-creative="300003" data-group-id="0" data-skimwords-word="aluminum%20heads" data-skimlinks-editor="0" data-skimwords-id="431653">aluminum heads</a><span style="position: absolute;"></span><span style="position: absolute;"></span>. but since its out of the car. i wanna do what ever i need to do before i install. dont want anything crazy. its going into my daily driver
The later 5.3 is a decent platform to start with. There isn't much to be gained by upgrading the intake or heads. The aftermarket intakes don't flow much better than the 07+ truck intakes. They are actually very decent. This goes for the heads as well. The 07+ 5.3s come with 243 or 799 heads which are the same heads that the ls6 and ls2 came with. These are the best cathedral port heads that GM made for the ls series. Your best bang for your buck with this engine is going to be a free flowing exhaust and a cam.
If it were me, I would swap the engine in stock and get the bugs worked out before you modify it. When you do add a cam or change anything substantial on the engine, the ecm is going to need to be retuned to run properly. The software isn't cheap and neither is a proper tune done by a qualified tuner.
These motors are very easy to swap cams in. the intake does not even need to come off. Just pull the water pump, crank pulley and front cover. Very easy to do in our big g-body engine bays.
Good luck with the swap.
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