Quote:
Originally Posted by Pampered-Z
You should check what else make the HO engine. Often the HO builds are more then a cam change, also gets a higher ratio rockers and tuning. I understand the 5.3 can easily make more power with tuning and the torque manangment tunered off. I don't think that cam swap will gain you very much by itself.
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Acording to the gm performace parts catalog the 5.3 HO got the LQ9 cam and Grafal-coated pistons. Its a drop in long block for the 5.3.
Isntead of spending $3500 on the long block I thought I would just upgrade the cam in mine to the one in the HO to gain a little more. I plan on using my truck to tow my car to places like the body shop, JS's shop and eventualy the track.