All correct and yes Rick Crawford would be the way to go if you are wanting to get any porting done.Yes. The ls3 heads are the same casting as our. (L92/l76) the difference is the ls3 heads have lighter intake valves. A few guys have purchased the valves and swapped them into their heads, essentially making them ls3 heads.
I have a set of ported ls3 heads sitting on my garage floor waiting for me to put them on.
There is no issue with the dod system and using other heads.
You have a hand full of options.
-Gmpp cnc ls3 heads. Brand new, flow better and have the lighter intake valvles.
-Buy ls3 heads new or used. Have them ported then install them (what I did)
-Pull your heads, send them off to be ported and have the intake valves installed at the same time.
-Buy someone's stock heads and send them off for same treatment. Saves down time. Sell your stock heads afterward to recoup some $ (probably fastest/cheapest)
- Buy aftermarket heads from any manufacture, anything for a ls3 will bolt up to your block.
I recommend contacting Rick C for porting service. He is a awesome guy to deal with, very fair pricing and does outstanding work.
I heard that build ended up costing some big bucks and probably wouldn't be worth it. The LS3 heads really are pretty amazing. Some M6 camaro guys are getting over 500 at the wheels with cam and boltons WITHOUT porting the stock heads.i heard of pat g using cathedral heads n gettn sum good figures. ill find out some more info on that.
yea ive noticed they are pretty hard to find used lolWhat is a average/fair price for bone stock ls3/l92 heads. NEW and USED? I checked craigslist and ebay and didnt come up with anything that looked good.
From what I remember, he used some AFR cathedral heads and a ported FAST manifold. You would also have to buy rockers for those heads. In my opinion not worth the cost.I heard that build ended up costing some big bucks and probably wouldn't be worth it. The LS3 heads really are pretty amazing. Some M6 camaro guys are getting over 500 at the wheels with cam and boltons WITHOUT porting the stock heads.
The bare heads are just that. Bare castings. They don't come with the hollow intake valves that we want, or any springs. You want those valves if you are running a larger cam. The springs you would replace bit are usually worth $50 or so to the right person. New stem seals are a plus as well.whats the difference between the bare heads and the complete heads? wouldn't you want the bare heads because you would be replacing the parts on the complete set anyways...?