There was a Twin Turbo 70's TA that had a 400cin 6.0L . What was the performance of such a TA? HP/Torque? 1/4?
Was it lightning fast or a problematic lemon?
Would the TH350 fit into a 3rd gen? Would that be a good idea?

 

I'm not sure I remember a 70's T/A with a twin turbo 400 engine. I think you probably thinking of the 80 or 81 model that had a single turbocharged 301 engine in it and it was only rated at 185 hp. I could be wrong but..................

 

unless it was a one of a kind dealer show or concept car nothing like that was produced to my knowledge either

 

The only Twin Turbo factory firebird I know of is the Firefox. Twin t-3 garret turbos, rated at 604hp and 700lbs/ft @ 4,500rpm I think. It never saw production. Kind of a special project car.

 

There was nothing produced like that.

 

I am not an expert by any means. Just trying to get a clearer understanding.

The 400cin is nothing special then?

What is a TH350?

I know I've seen a black 2nd gen firebird that said "twin turbo" in gold letters across the back fin/spoiler.

 

TH350 = tranny

400cid engines can be made to produce a hell of a lot of power

That Bird must have been just had the custom lettering slapped on it

 

Yeap, the lettering had to be custom............because the turbocharged models just said "Turbocharged" across the back if I remember right.

 

Chronos, were you refering to my post? Or the 70's TT ta post? Here's my proof. http://transamgta.com/FireFox

 

Ok this is what I'm gathering from you guys.

1)There was no Second Gen Twin Turbo TA
2)The Third Gen firefox project car was the only Twin Turbo built (for 1st, 2nd, or 3rd gens... 4th gen?) and never was a production car.

Still,
What are the specs then on a Second Gen 400cin/TH350?
Would it fit in a Third Gen?

And... Are there Turbo LS1/LS6's? Supercharged?

What do you guys know about those "Eletrical" turbos that attach to the air intake but are powered by the electrical system? Does it work? Why/Why not?

 

The "Electrical" turbo thing...

 

LMFAO!:sillylol:

 

To answer some questions:

Yes a 400ci pontiac or chevy motor will fit, the external dimesions are the same as any other small block chevy.

The TH350 is not a turbo 350 motor, it is a TurboHydramatic 350 transmission. A 3 speed automatic and yes they also fit in our cars with a conversion kit. Im running one right now. Plus side is MUCH cheaper to build then a 700R4 (I had 3 700R4s blow up on me, i know they can be made good but i dont have $2500 right now). The downside to the TH350 is that its a 3 speed and the first gear isnt as deep as the 700R4 so u dont get off the line unless you do a gear change. I just put 3.45 gears in and the car is haulin now.

There was NEVER any production twin turbo F-body made in any year. Just the 80-81 single turbo TA and the 89 TTA. The 80-81 cars were DOGS. Slow as hell. Now a 350 or 400ci motor with a turbo would have been sweet.

There are no factory supercharged or turbocharged LS1s or LS6s. There are tuners who do both though. Costs LOTS of money. Cheaper to build a normal turboed SBC.

The electric turbo is bullsh*t. Performance is directly related to how much money you spend. How fast do you want to go? A $50 heater blower motor stuck in the intake aint gona do jack for ya.

Hope that helped.

 

Ok a turbo presurizes (psi easy to find out) rating but it must also have a cfm rating (not easy to find out). What would the cfm rating be for a turbo? I.E. The "Electrical" Turbo fails because its psi is too low? cfm too? because its just a fancy blower fan?

OR

such an idea might work if it were a true air compress, say inplace of an AC compressor. So a kind of a side ways supercharger?

Thank you all for your informative posts.

 

Almost nothing that we use to force air into an engine compresses that air, all it does is speeds up the air so that the restriction to the air flow in the engine causes us to see a static boost. One other important feature is that when it’s speeding up that air it is fairly good at not allowing air to flow backwards through it.

The fan fails to give you boost because, well, to start with a fan cannot build or hold any significant pressure, anything that you blow through it will flow back around the tips of the blades if it sees any back pressure, so you will not see any static pressure at all (you might see some dynamic, basically pressure from the speed of the air hitting something if the fan is moving air fast enough). Second, even it was able to maintain a static pressure differential, it doesn't flow enough air to outflow what most of our engines use (making it a restriction).

Looking at it another way, most of the blowers that we run on our cars draw at least 30HP, in many cases much more. If you built an electric setup that was as efficient as the mechanical setups that we have (you won’t, since you’ve got to convert the mechanical energy of the engine into electricity, and then the electricity back into the force used to drive the blower, every time you convert you loose efficiency) you'd still need to supply it with enough power to make 30hp or more. That would not only fry the wiring coming from the charging system but kill your battery in under a minute...

If you ever get the chance you can get a very good impression of how much force the air has to be moved with by a blower on a car by putting your hand over a disconnected outlet of a blower at idle. Doing this on the Eaton M90 (think really small roots type) on my brother's car you cannot block it off (and if you try too hard you'll burn your hand because as the pressure of air goes up it gets hotter), consider that you'll be getting at least 6x that when the thing is really working (engine not at idle). Try the same with a leaf blower and you'll be able to block it off fairly easily, you probably won’t even get enough of a pressure rise to feel a change in temperature and that's all the air it will move.