Project Black Betty
I am listening to this conversation scratching my head. I was going to look at a small block 318 for my 1964 Dart this morning but could get a hold of the guy. Now I'm not so sure.
Can someone give me a general idea of where to get & what items I would need to build my 225 /6 into a turbocharged driver.
View attachment 1714540277?
Nice-looking Dart!!!
To build a street car making about 200 HP (that will get you into the fourteens, probably) you won't need much...
Here's what I would buy, initially:
A junkyard Buick turbo in decent shape. The Buick guys take them off to replace them with bigger units when that want to go faster, which is all the time... check the Grand National forums...
There's a variety of ways to mount a turbo to a slant six exhaust manifold, but a FABO member whose FABO name is "PISHTA"figured out what I believe is the best way to do it, and has pictures on here, somewhere. He takes a 2.5" U-BEND that is mandrel-bent on a very short radius, and attaches a flangeto each end; a turbo mount flange on one end and a flange that will mate to the exhaust manifold outlet on the other end.
In that way, there is no welding necessary on the cast manifold. That is good, because slant six manifolds aare very prone to cracking, and welding on them makes them MORE prone.
I think you'll need a Super Six 2bbl intake manifold and a Holley 350cfm 2bbl carb, modified for blow-thru. There is a lot of information available for this procedure, but if it scares you (as it does me) there are people who will do it for you for a little cash. I don't believe a low-boost (say, 10 psi) setup will require much in the way of carb mods.
Ten psi may not get you into the 14's but I'd bet it will be close.
You won't need an intercooler, or a Boostmaster ignition retard usit from MSD, but a Snowperformance Boost Cooler alcohol/water injection unit might be nice. It might allow you to run enough boost without detonation to trim a bone-stock 340...:?
A 3" exhaust system (single) with a straight-thru mufffler should cap this system off, without having to even pull the head. The stock cam will work well.
I'd seriously consider installing an 8.25" rear from a '73-up A body, because that 7.25" that's in there won't live long. Might require than you shorten the driveshaft a little.
This WILL be a PREMIUM gas engine, but then, so would a decent-performing 318/340/360. in all probability.
It should have
great street manners and will be geared ffor the hiway, so driveability under alll circumstances, should be good.
Have fun! :cheers: