3.9 V6 Turbo?

[crazymadbastard]

If you really want something different and light look into a 2.4 turbo swap. That would really piss people off too! Not me though, I'm all for uncanny rides.

[william]

Quote:

Originally Posted by crazymadbastard If you really want something different and light look into a 2.4 turbo swap. That would really piss people off too! Not me though, I'm all for uncanny rides.

2.4 turbo... Now *that* would be different. Hmmmm....

[usetaboost]

Go with the 3.9 then. Bigger bore will help get that sled up and spool the turbo better too. Don't wanna mess with 10:1 comp. I've heard on the buick board tuning high compression with boost is a nightmare. Ok I'll stop talking about them . Can't help it, I took it out last night, new chip, fixed the scoop, runs like crap and still buries the speedo before I feel comfortable taking my eyes off the road, sweet!

[Avenger]

I like the 3.9 idea, but I'll throw out another one for you. How about a turbo Slant Six? It weighs about the same as the 3.9, you can get the same power levels from it, and aftermarket/performance parts are easy to find. Plus the engine bay was designed to accept that motor to begin with, hence mounts and the K-frame won't be an issue. The only real drawback that I can see are that the weight isn't as far back, but that's offset a little by the extra room that'll allow you to place everything exactly where you want it. And I can't recall that the /6 ever got EFI, I think they continued the carb up until 89.
Reliability is NOT going to be an issue with the /6, and the long-stroke design of the motor will play into your plans for an autocross car.

[usetaboost]

I have a hot rod magazine from a few years back that a guy built up a six in Dart, I think. I'll try to find it over the weekend. I know that there's a company that makes turbo kits for CHevy 6s, they might make them for dodge too. If I come across it I'll post that too.

[tkelly27]

Turbo V6 will look cool, especially if you go with DIS. Old guys will think you've chopped off the distributor along with the last 2 cylinders

If it accepts all the parts from the LA small block dodge, the crank and block would be the only thing holding you back from making all the power in the world, and I have no idea what those can handle. I imagine 400hp would be fully possible.

The only benefit to sequential turbo is that it's unique and might spool up quicker. Best bet, big single.

Did they ever come hooked up to an AOD or a 5/6 speed? That'd be super cool for cruzing too

[william]

I thought about a /6, but that one has been done lots (relatively). The V6 is already setup for MPFI too. The V6 also shares the LA rear engine bolt pattern. There was an AOD trans available behind the 3.9, as well as a 5 spd, but the 5spd was a truck trans, and I am not sure how the ratios would work on the street. Worth looking into though. The 3.5 would be really wild, but the slugs alone to lower the CR would cost more than a stack of 3.9 engines. I guess the 3.9 is the best place to start, and if it works well, time to look at the 3.5 a little more closely.

[440trk]

From what I know of the 3.5....they're a great motor Naturally Aspirated. They DON'T hold up to boost well at all. I seem to recall reading something on ALLPAR about this as well.

The 3.9 would be the most sensible conversion, though quite frankly, I think it's more effort than it's worth. More power to ya if ya pull it off though.

Also the 5spd trans behind the 3.9 is not all that strong....however several of the OD automatics will work just fine.

[Tim_K]

I used to do a lot of /6 performance stuff, but quit several years ago. It's a solid, reliable, and strong motor design, but the head and intake/exhaust ports SUCK big time. If someone ever custom made a 24 valve DOHC head to fit a Slant it could make some big power.

[genghis05]

that'd be a beautiful engine to see. I read an article on some /6 website about how to fuel inject one for ~$400. The guy used the fuel injection system off a 3.8L buick from 1985. (because it had a mass air flow system instead of map sensor and would compensate for the /6 bein only 3.7L) My favorite line of the entire article was:
"Your slant six came out in 1958 and technology has advanced quite a lot since then. And remember, fuel injecting your slant six is the first step to turbocharging it."
I love dodge guys. You're all insane.