Hey guys!

I don't post much, but I'm finishing up this project and thought Id share. Its a single turbo on my 1969 Super Bee's 383. I've been wanting to do this for some time, and finally started the project this past spring. I did the sequential EFI (MS3x system) and Coil On Plug work about 5 years ago in anticipation of eventually going with a turbo.

I don't really have an ET or HP goal, because its really just a fun street car, but I will take it to the track a few times. I realize that a stroker would probably have been an easier way to similar horsepower results, but I wanted to give a turbo a try.

I first built the 383 about 15 years ago and I've put just 2000-3000 miles on it since then as it was parked for 5+ years while I restored it. It was a mid-12 second car naturally aspirated.

The heads and pistons were removed to open up the ring gaps and drop the compression ratio.

For reliability (and ease of install) I used stock exhaust manifolds. Looking back, maybe I should have found a set of HP exhaust manifolds, but I really dont think it will make much difference. One day, I think I might build log manifolds or something that flows better.

The turbo is a Turbonetics 7875 T4 with a 3" exhaust outlet. I guess that seems small for a 383, but I decided to sacrifice some ultimate HP potential for ease of packaging in the engine compartment.

The downpipe and hotside pipes can be removed in just a few minutes with v-band clamps.

I have a methanol injection setup ready to install. I still haven't decided if I will one day swap to an inter-cooler, but the meth injection should work until I figure out what I want to do.

I still need to paint and then wrap the exhaust bits to attempt to prevent frying everything close.

I changed from a solid FT 232/242 camshaft to a custom Crower hydraulic FT. 226/222.

Anyway, I just thought Id put this post out there... I know that finding info and pics of turbo Mopars is pretty hard to come by, and even more difficult for non-race type builds. I still need to add the wastegate-to-downpipe pipe, but other than that, its pretty close to done, and runs and drives. I still need to upgrade my injectors, so I have limited myself to hitting just 1 psi while footbraking just so I could say I saw some boost!

That looks very nicely done and should be a total blast to drive.

I also have an MS3X system and love it, been super reliable and you can't beat the price vs features. Did you buy yours assembled or did you build it? I built mine to save a little money and it forced me to learn more about how it all works, it was also kind of an enjoyable process.

That look great, good job. Keep us posted on how it all works out.

That Nice always wonder what a turbo would look/fit like in a b/e body....Thaxs for the pic.

Looks good. You have a P.M.

sweet! My 69 Coronet is going to be my 2nd turbo kit when I get around to it (my 70 Sport Fury was my first). It'll be interesting to see how that T4 works, I would suggest running a pyrometer and in that same bung you can temporarily run a copper line to an oil psi gauge and you can do back pressure testing. I did that on my Fury to help me decide on what to do when I moved from JY turbos to Precision units. I found a great deal on a 76mm T6 1.32 A/R dump truck turbo as a starting point for my Coronet when I get to it. I have twins on my Fury because I thought it would be easier - not sure it was.

Nice workmanship
Doug

Thanks!

I bought the MS3x assembled from DIYAutoTune.com, but have since modified it by soldering a second MAP sensor on it for real time correction (I live in the mountains). Looking back, I would have liked to have assembled it myself, but the rest of the EFI swap was enough of a challenge at the time! Since its a B-engine and there are no readily available EFI intakes, I had to add the injector bungs to an old Torker intake which took some time to figure out for sure!

I have definitely checked out your posts on your build (with the flipped over manifolds) and I do think that the single turbo has to be easier. I stress out just thinking about having to snake a downpipe out on the driver's side! The attached pic is the pipes merging into the T4 flange, which was pretty tricky to do in such a tight space. I went with 2" pipes off of the manifolds merging into 2.5" w/ a 50mm wastegate.

Yeah, hopefully the exhaust won't choke it too much. I kind of get my inspiration from the Chevy LS world, and there seems to be more than a few guys running similar turbos with a 383. I know that doesnt mean it will work for me too, but its a start. If a person had a bunch of different turbos available to test fit, it would be so much easier to get the size right, but I was so worried about it not fitting (and having to cut or massage the body) that I erred on the side of "too small". Now that its in there, I see that I very likely could have fit a larger exhaust... and probably a 3.5" downpipe. I found measurements of turbos and looked at 10000 pictures and eventually made some mock-up turbos out of foam so I could see how much room there was.

From what I've seen at the track and read in Corky Bells book, it's pretty hard to muck up the hot side as long as it stays sealed and doesn't melt. I wouldn't lose any sleep over the set-up you have there. What material are you using? "Looks" a lot like the 304 s.s. I used. Slow to weld, but has held up well.

Looks very cool.BOOST is where it's at!! Should be blast to cruise in!

A-Body with a small block but it looks like we had similar ideas on turbo placement. Microsquirt, 78/75, e85

I ended up using just plain steel, with a few pieces of stainless mixed in (some pieces I just couldn't find in non-stainless) I used my MIG to weld it together, and I have never welded stainless before, so I decided to go with plain steel. I wouldn't mind having it ceramic coated, but I am going to just paint it with some VHT Flameproof and then wrap with some lava wrap.

That looks great, super clean and tidy! What did you do for manifolds? Also, did you run your crossover under the oil pan, or up under the fan area?

With your alternator moved, your wastegate-to-exhaust looks better than what I have planned for sure... the routing of that on mine is currently giving me a hard time.

That's a nice clean install. I wouldn't worry too much on the T4 78mm exhaust wheel. It's a little on the small side for 380" motor, but for a street car it'll spool really nice.

Mine is 367" with an T6 88mm exhaust wheel, and it's pretty laggy. So you made a good choice for a street car.

Thanks, what size pipes do you run on your hot side? I know it’s a totally different combo and type of build, but your ET and MPH are certainly inspiring for an aspiring turbo guy like me!

The 304 s.s. comes into ay to prevent the melting part.I used 308 mig wire and welded really small stitches to prevent the heat from warping the tubing. The different expansion rates of the two steels - may- or may not cause cracking at tbe welds. I'm no expert as I have oniy done this once. It may be just fine.(?)Drive it and we'll find out.

Mine uses 1995 Magnum Truck Exhaust Manifolds. They are only 1 7/8" outlet at the flange. From there they go into a 2.5" hot side, which is WAAAAAY too big. I just didn't know any better at the time when it was built. 2" would have been more appropriate, especially being fed by the small manifolds. The smaller the crossover, the better it will spool.

From there I have a single 4" exhaust that goes all the way to the bumper with a straight through muffler.

Mine went low 10's in it's early form with home ported iron heads, a 224@.050" cam, and 3.23 gear. Really it just depends how brave you are to keep turning it up, and how good of a job you do with fuel quality and timing to enable higher boost levels.

I'm really not worried about the choice of metal here. Stainless would certainly have been better, but plain steel is what most people out there use.

I hope that the sequential EFI and COP ignition will help me out as well as the methanol injection. My goal has been 12 psi but, like everybody with a turbo, I'm sure that I'll want more. I don't have a rollbar and don't intend to install one, so who knows what kind of track time it will ever see.