Would a pair of T3/T4 turbos support a 4.6?
 

I'm looking at possibly building a low boost (6-7psi) setup for my '04 Interceptor. Specs on the turbos that I'm looking at are .50 A/R compressor and .63 A/R turbine. Compact units with an internal wastegate, that also have a V band compressor exit (which is what I would need.) Any input is appreciated..

i think that those turbos would be too small. you could go with a single t-70 turbo..cant rmember which turbine or compressor thought.

I'd prefer a twin system. I want to keep things "even" in the engine bay. And while we're on the subject of turbos, could someone give me more info on blow-thru MAF's? I haven't had any experience with them, and it seems like they would be better suited for my application (because it would redcuce the amount of piping I would have to route in the engine bay.)

t03/04 hybrids are the norm for twin systems with modest size v8's.

Yeah.. You mentioned them in the other post. I haven't found any with integral wastegates, which is something I really want. Do you happen to know any place that has fair prices on those? The T3/T4's were nice because you can buy 1 for around $180-190 shipped. I doubt I'll be able to find TO3/04's for that price :(

single is better and cheaper.

why would you want it with an integral wastegate? If you go external it's easier to mess with.

i have 2 57mm T3/T4 turbos sitting at my house brand new and i'm not going to use them if you really want them we can work something out for both of them cheap... i'll send you pm

Because I am used to turbos with integral wastegates, and it would be one less thing that I have to buy.

if it's a stock to mildly built 4.6, you shouldn't need hybrids, depending on your power output. If you want to stay sub-500ish, twin T3's(.60/.63) are more than adequate, and typically cheaper. Anything over would require the hybrids. I've had both twin and single setups, and they each have their perks...twins sometimes has a larger "intimidation" factor to spectators of your engine bay, they also tend to have simpler hot side pipes. They however, can become a PITA for engine bay spacing, as both right and left bank areas can become crammed, and the cold side piping can get tricky. You also have to worry about the *perfect* sequencing of wastegate adjustment on each side to have them work in unison...this is probably not going to be a real world problem unless you plan on squeezing every last drop of power out of the system. Single systems, on the other hand, don't necessarily have the same intimidation factor, but are more than qualified to make the same power at the right RPMs, as long as it is a correctly sized unit. The hotside tends to be more involved as the two headers must merger before entering exhaust housing, and the downpipe needs to have a larger diameter as compared to a pair of downpipes from twins...this can cause space problem in the engine bay along the firewall(or where ever you run the DP) The single setup, however, only requires one head unit, so that costs quite a bit less than a twin setup. Also, boost is determind only from one source, rather than two variants with a twin setup. I ultimately decided that with a conventional front mount approach, I prefer a single due to cost, efficiency, and ease of maintenance on the rest of engine...with MY twin setup, I had to remove the turbos AND the headers just to check/replace the spark plugs....that was an ULTIMATE PITA...
Either route you go, you'll love the UNBELIEVABLE amount of low-end, mid range, and top end torque... good luck