Of the above engines I'd steer clear of the no warranty blown engine. First because of the warranty, and second because it's just too much for any amount of street driving.
My favorite is the 460 HP, 454 engine, with the aluminum heads. I'd rather it had a little less compression, as it might not work on straight pump gas without retarding the timing to keep it from pinging, but the aluminum haeds will save yu a ton of weight, and work well with your small block Camaro's front suspension. Someday when I'm rich and famous I'll change my heads out to aluminum, just to save weight, and get a bit more flow.
I like the 9:1 compression of the 450 hp engine, but for only $100 more the aluminum heads on the other are a steal.

 

well i guess my thoughts were pretty much inline with all 3 of you i was thinking of either the 450hp 454 thats a true turn key with everything even starter.just needs belts and hoses or the 460hp 454 from dominator engines..they both have warranties. the 1st 454 has a 1 yr warranty and the 2nd dominator 454 has a 1 yr warranty and an optional 3 yr warranty for like $200 more which covers labor as well. but i like that the dominator has alum heads which save like 100 lbs of weight

yeah the lower compression 450h 454 is nice for the street but the alum heads on the 460hp 454 should help with running the little higher compression on pump gas right?

 

Nope. The aluminum heads do nothing to control the engine's reaction to compression ratio, or pinging on pump gas. Compression is compression, regardless of which head you use.
10:1 probably is low enough that with premium, and a bit of retarding on timing, it should do fine. Heck, you can always go get some racing fuel, or octane booster if it isn't!

 

ok well i just found out on that Dominator Engines 454 with 460hp, its not dyno'd just balanced and blueprinted for 5600..its an extra 600 to have dyno'd

 

Yeah,it'll be borderline and you could possibly notice a difference from one tank of gas to the next as gas even from the same pump but a different batch is at best inconsistent these days.
My Harley has a somewhat pumped up motor with a compression ratio of about 9.7:1 (10.25 pistons W/ Cometic .030 head gaskets)and it pings once in a while, especially on a hot day being it's an air cooled engine.
One tank of gas she'll run like a scalded dog and the next she'll not be so happy and lets me know.

 

Aluminum heads don't change the compression ratio of the engine. But the theory is that aluminum heads are supposed to be able to dissipate heat better than iron heads, which makes them more resistant to detonation. Therefore, even able to tolerate a little more c.r. than an iron head because of it. And Y2K's experience with higher heat causing more frequent detonation (pinging) helps to support that.

 

Who cares if it's dyno'd? What do you need to find out from a dyno? It wont make the engine run better, nor will it make more HP. The only way running it on a dyno will help make HP, is if you dyno tune it. That's making numerous adjustments while running it inbetween adjustments to see what works.
Don't worry about paying $600 for a dyno run, unless they're tuning for optimum power at the same time; dyno tuning.

 

True that but it's getting down to splitting hairs if it would make much difference with a water cooled engine.
That said there's a fine line between whether or not an engine will ping or not and at 10:1 compression it might just make the difference sometimes depending on the fuel quality,air temp and humidity.

 

well so you know how much hp and torque it makes exactly..

 

well i guess i will have to find out if it pings or not and if it does i will have to add octane booster, which would kinda suck lol