Twin Turbo 540

 

The twin turbo engine of anykind is going to require you to have a mechanic living at your house to keep it in tune. I came from the LS1 camp and know a few GN guys. There is a lot of "tweeking" that needs to go on. I would rather have the 540 BB.

 

plus, it would sound bada$$ when someone asks if you have a 454under the hood, you get to say, "naw... 540." ...and then proceed to watch their jaw drop to the pavement

 

Would having that big of an engine have a negative effect on handling?

 

Originally posted by dunkinskeleton:
Would having that big of an engine have a negative effect on handling?

No more than any other Big Block

 

Originally posted by JC00SS:
The twin turbo engine of anykind is going to require you to have a mechanic living at your house to keep it in tune. I came from the LS1 camp and know a few GN guys. There is a lot of "tweeking" that needs to go on. I would rather have the 540 BB.

I completely disagree. Even the race guys go round after round without touching anything. But on a street deal it's the way to go, assuming the budget fits. It's not inexpensive.

Jody

 

A roots blown small block will feel exactly like a big big block. Turbos are still in never never land for those that earn any kind of normal income.

 

Just build a 632 with a roots blower, costs about the same or even less than a high reving turbo small block

 

I am putting together a twin turbo small block right now. I believe by the time I get done I will have about 2k in parts to do the build. The turbos I am using are capable of about 400hp each. I will post pics when I get done moving and get some more work done on it. The nice thing about the turbo route is that the car will be quiet and sound like a stocker until you spool the turbos, then hang on. The best part is you dont have to rev to the moon to get the power go over to turbogms.com/turbomustangs.com and see what the Furd guys are running wit stock 5.0 stangs turboed it will change you views

 

A freind and I just finished a twin turbo 1991 GT Mustang. 331 stroker, TKO tansmission, complete fuel system, etc... The car made 608 RWHP, went 10.66 @ 136, get's 17 MPG, and is docile as hell to drive. However, it is something you have to wrench on almost daily. The spark plugs are almost impossible to get to, turbo plumbing blocks the oil filter, ambient temperature really affects the performance of the car, etc...

IMO, a fuel injected big block with nitrous is the best combo for a street warrior. A good big block build will yeild 450 HP at the wheels, and it'll last for 100,000 miles at that power level. Add a 200 HP nitrous shot to that combo, and I think you'd run right with my buddies turbo Mustang. On top of that, you can go out and hammer on your 450 HP car without causing the wear and tear on the engine and drivetrain parts associated with 600 RWHP. Everytime my buddy drops the hammer, his car makes 600 RWHP.

The twin turbo route is also very expensive. The Mustang has 16k in it. 5-6k in the engine, 3-4k in drivetrain, 2k in turbo's, plus the custom made turbo plumbing, etc... It all adds up. However, a 540 isn't going to be cheap either. All the drivetrain expense will be the same. The bottom line is that either route is going to be expensive.

 

Small block with boost! if you really want to turbo it you should switch to EFI though. A well tuned EFI twin turbo small block should NEVER need "tweeked" or "tuned" all the time. Big block make nice power without boost but the extra wieght up front really hurts handling.

 

I believe that my car is the only 468 bb with garrett twins, they are able to produce 1800hp with a intercooler set up.Mine however produce 8-9 psi with variable capacity. my engine was a 425 hp motor stock.the estimated hp now is 800hp on 87 octane .there is a very lot of work that went into this car, it's a true sleeper.and the sound is very addictive(a whistle that chills to the bone)I can drive this thing around town and NO problems what so ever!Remember that under normal driving there is no stress on the engine. But when you get in to it you have to let her idle for a few seconds to let the turbos cool off. there is a differant operators habbits to change when you own a turbo engine! My project cost me alot of money and time. But when I pass someone it was all worth while.I will post pictures later.

 

Originally posted by rancherlee:
A well tuned EFI twin turbo small block should NEVER need "tweeked" or "tuned" all the time.

In a perfect world you are right, but it just doesn't work that way. Underhood temps are a constant danger with a TT setup. Vacuum lines and wires are always in danger of melting. The heat can mess with the ECU on an EFI system, too.

Add in a boost controller, 2 wastegates, a blow off valve, oil feed and return lines for the turbo's, intercooler plumbing, an oil cooler (unbless you like the idea of 1300 degree oil being cycled through your engine), and a whole host of other stuff. There is just too many non-factory installed components, and too much going on for to be maintenance free. Like I said, my buddies Mustang needs "something" almost every week.