http://www.araoengineering.com/LSX.htm

what do you think about them? and have you seen them yet? do you believe the science behind it?

they can also be made to use all 6 bolt per cylinder with the LSx block

 

Wow, thats some impressive stuff right there!
Now if I only had an LSX short block and 10 grand to buy these heads and put it all together, Oh well!

 

well they would work on a ls2 or anything of that bore or bigger i guess not just a lsx block. but ya i couldnt spend the money on those things unless i was in a n/a competition or something

 

Ya If I had the cash for those I would have already had an LSX 454 to put them on

 

Those are some expensive heads......

 

those have been widely discussed here there was a guy in the LT1 forum that has been trying to get them to work for probably over a year now with little support and lack of communication from the company...

 

Holy **** *****.

405 cfm @.600 lift...very nice, to bad I have an LS1 3.900 bore.

They are rather pricey. I would pay around 4000 bucks max for a set of heads. Might as well just build a motor for that price.

I dont know how they share one rocker per two valves, thats what stumps me.

 

There was all sorts of **** going on regarding those heads if i remember correctly. best to stay away. they do sound tempting tho except for the price

 

VERY EXPENSIVE...I guess unproven still.????

 

stay far away from those guys!!!!

 

/\why?

 

Look at what they cost!
You can get some All Pro heads to flow like that on a 4.00" or 4.125" bore but they still are expensive.
Check out TSP LS7x CNC ported heads 280cc...

 

No i know the cost is nuts, but is there something unsound about the tech here? I mean we all know the difference between a 2 and 4 valve mustang

 

i would like to see the flow #s from .050-.400. should outflow a 405cfm 2 valve head by a ton down in the lower lift ranges. i find thier claim that they work with standard pistons to be comical though

i think the price is actually pretty good, assuming the rocker setup is stable at 9000+rpm (which it probably isnt)

 

you are missing the whole point of running a 4 valve head. they will KILL the All Pro or any other comparatively flowing 2 valve head in the lower lift ranges. also the smaller, lighter valves are much easier to control at high RPM

 

can you give a little more reason why? after reading some of the post it sounds like araoengineerimg dosnt stand behind there product.

 

^exactly that. theyve been screwing some guy around for the longest time last i heard. i dont think it ever got sorted out and he never got them working

 

There was a huge thread going in the advanced section. https://ls1tech.com/forums/advanced-engineering-tech/694109-arao-32-valve-heads.html

 

So basically did it come down to the fact that the guy with the Company that makes these Heads does bad business..?