Twin turbos

[Jesse 67 c-10]

I know people have done it but has anyone on the board tried this? would be a long ways down the road but I would sure like too go for it eventually. wondering, where would be the best place to get turbos? any cars that had good ones, I could use 2 of them? Fuel injection would be the way to go with this, what type of system would be the best? any experiences?
Thanks!
Jesse

[Project1970]

http://www.hotrod.com/editorial/arti...=text&id=42798

Yeah, it's a F*rd, but imagine the power if he'd only done that to a '67 Camaro with a 302 and a customized TPI setup.

Lots of REALLY good info in there too, especially about tires and little turbo details...oh, and I can vouch for that thing's speed, he has personally kicked my @$$...I mean, a severely traction-limited 12 second pass to my high 16, LOL...

[Jesse 67 c-10]

ya that is a pretty sweet setup he has! 550hp and 650lbs tq out of 302ci! I definatly want to do this now! some good advice thats for sure. One idea I had was to have the actual tubo further away from the blower, ie longer shaft, this would keep the air a lot cooler. wonder what type of fuel injection he's running? Anyways, sweet set up, thanks for the site
Jesse

[Snowbound]

Hey Jesse, I've also been looking at this idea. You'll definitly want an intercooler between the turbos and the intake. Heat kills the power. Look at the Buick turbos in '86 and '87 got the intercooler and were WAY faster than previous years. Also an EFI setup or a mechanical fuel inj would be ideal. Good luck!

Brian

[whateva]

I was told by a turbo guy. The easiest way to turbo a Small Block Chevy is to get some turbos of an 80's T-bird Turbo Coupe. I think the mustang had the same turbo on the SVO. Then get a set of chevy block hugger headers. Have the flanges welded on the headers. Then invert them and mount the turbos.

Just an idea.

[Fast68Chevy]

wonder if is any way to use an '80;s Audi 5000 2.22L turbo setup, hmm.....

[Eddie H.]

Chrysler built a couple gazillion turbo 2.2 engines in the mid to late 80's and early 90's. These should be cheap and available at many junkyards. A pair of em' would be just about the right size to feed a small block chevy. The Ford turbo t birds and svo rust-tangs weren't that numerous so they would be harder to find.

It would take a lot of fabrication and plumbing, but it could be done. I don't remember the names, but a few companies used to make turbo kits to fit the small block chevy. I think Gale Banks was one of em?

[nate68]

here are 2 pics of a 57 bel air with twin turbo, idont know the specs on teh car i just found these pics somewhere online a while back. this might give you a general idea of what a setup might look like. its kind of nice that we have all of this space underhood.

[nate68]

pic number 2

[Jesse 67 c-10]

That is one sweet belair! someday......
Ya I'm convinced now, turbos would be the way to go. Just think, porche gets 415 hp and 415 lbs tq at 3500 or so rpm from a 3.something litre flat 6! 700 lbs of tq could be had from a 327, who needs a duramax diesel! the only problem is finding a tranny to handle it, and I like to shift myself, lenco maybe? the rpm changes from a regular stick make the turbo spool up and down alot, depends how you set them up I guess too. might not work too bad with a wider ratio tranny. porche does it with a 6 speed!?
Jesse

[Big69C20 Toy]

I used to work for Garrett turbo. Force feeding a motor with turbos is a good thing to do, your efficiendy rises and you get some hellacious power. That said it can also be major pain in the rear. Plumbing with turbos is a huge thing since there is a lot of it. If you can make sure you run intercoolers as it's much better for the motor and you get better power.

Let me correct somethign said earlier, you dont want the intercoolers as far away as possible, the further they are away and such the more pressure and turbulance you lose with the plumbing. You want an intercooler to cool the air down as much as possible without taking much of the pressure away from it.

Regarding swaps, if you're running gasoline you need to understand that each pound of boost will require about one octane point of gas. Also for turbos you need good flowing heads for the exaust side, as the better it flows the more those turbos spin up.

Also you will need to probably have custom headers made since no smallblock came with turbos i dont think. Wrap those headers as the more heat you keep in the exhaust before the turbo the better. After a turbo you want little or NO backpressure as turbines dont like that ..

Hmm what else, ohh definately fuel injection is best and the closer you can get it to the cylindar of course the better.

Not sure what else to say.
I'll be doing a custom turbo setup on my truck sometime in the future, just gotta get the funding for it all....

[THOR 50]

There's a lot of info here http://www.grapeaperacing.com/GrapeApeRacing/