Project Black Betty
The Dart in my profile pic. 1970 Dodge Dart Custom
How much HP do you want it to produce?
That's about a 3,300-pound car.
Tom Wolfe's 1970 Dart ran 12.95 @ 102 mph in the quarter with a stock (but turbocharged) engine with a Buick GN turbo and a 4bbl, but used 21 pounds of boost to get those numbers.
That's about 300 horsepower.
A stock short block won't live very long with that kind of boost, I think.
I don't think he ever had the head off that motor (at that time.) It had a stock cast iron exhaust manifold, cam, distributor and compression ratio.
Here's the video, in case you haven't seen it.
[ame="http://www.youtube.com/watch?v=pPe_vHwZsF4"]Slant Six Turbo 1970 Dodge Dart 1/4 Mile pass - YouTube[/ame]
If you only wanted about 200 horsepower, I think a stock short block would last forever, virtually, and would only require about about 10 pounds of boost, which might yield a 14.80 e.t. at about 95 mph.
That should be easily attainable with your 2-bbl setup and stock cam and head.
FABO member, PISHTA, had the best-engineered exhaust setup for that sort of a turbo mount I haave seen.
He took a 180-degree 2.5" U-Bend and put a flange on one end that bolted to the existing exhaust manifold and welded a turbo-mounting flange to the other end, which allowed him to connect (mount) the turbo without having to weld on the manifold. Those manifolds are crack-prone, and welding on them just exacerbates the possibility of a crack.
I think that the stock pistons would last a long time, with 10 pounds of boost and even longer wwith an alcohol/water sprayer like a Snowpwerformance Boost Cooler for detonation prevention. You might even get away with 12 or 13 pounds of boost with that injector, which might put you into ther thirteens...
Good luck!!!:cheers:
