hey everyone, this is my first post here because im in search of more power. (arent we all?)

i have a 72 Duster with a 360, 727 trans with 2500 stall converter and 4.11s in the rear with a 295/50/15 tire. its a quick car but not enough, plus it sucks on the freeway.

-78 block crank and rods with .030 kb silvolites (hyperutectic)
-new magnum heads
-cam is a PAW
225/225 @.050
304/304 duration
108 degree centerline
.483/483" w/ 1.6 rockers
-msd 6AL ignition
-edelbrock performer rpm/ holley 650 dp

like i said the car runs good, runs on 87 octane all the time no problem. it just needs more power. the trans may be swapped for a manual 4-speed OD unit (wide splits) and taller gears in the rear end(probally 3.54s)

should i go single or twin turbo?
what fuel mods need to be done to do this?
what ignition mods need to be done?

i have done everything on this car myself and im a really good fabricator so making some headers and stuff shouldnt be a problem.

 

the gears being dropped will be the first step . are you going to make the move to a dana 60 ?


well the issue of single or twins is up to how much you want to spend. i would go with the single on the A-Body due to the space constriction or the engine compartment although with some creativity twins could be possible.

you should look into the speed pro forged pistons , you can use the KB's but they aren't all too tolerent of detonation. a custom cam would be a welcome addition.

the manifold can stay , and the holley DP will work great when modded for boost in a moderate HP application.

you need to look at a good boost referenced fuel pressure regulator along with possibly an electric pump and upgraded diameter fuel line.

the 6AL should work good , but a digital 6-plus would be one better.

 

yep a dana 60 will be replacing the ford rear end thats in it now. the engine bay is pretty much gutted of everything possible. no blower motor, washer tank, a/c, ps, pb, or rad overflow or battery. could i use twin turbos off a production motor like off a turbo coupe or turbo buick? what about intercoolers? do intercoolers really help that much?

ok i need forged pistons, an electric fuel pump and boost refernced regulator. do i need anything to retard the timing under boost like a MSD 6 BTM?

 

yes and no on the BTM

you would be better off just locking out the timing versus relying on the BTM , they are known to fail at the worst possible times.


the intercooling is dependent on how much boost you are wanting to run and what gas you intend to do it on.

there are lots of possibilities on turbos , but i think something in the range of the SC61's would be a good starting point.

 

so you eliminate the vacum advance and the centrifical advance? wouldnt that cause it to run crappy down the freeway when your not getting any boost?

can you get me a link to the turbos? also wouldnt it be cheaper to go with 1 bigger turbo than 2 smaller ones? seems like intercooling and all the plumbing would be much easier with 1 turbo also.

i have a set of hooker comp. headers on it now, can i cut these up for the turbos or should i just make my own. i remember reading that regular exhaust tubing wont work for turbo headers, that schedule 40 steam pipe is the way to go.

 

check out the member here and he has several posts and answers,360 in a coronet,single turbo,he has dakota manifolds,and drives it a lot it seems,sounds like it would leave some rubber marks in front of someones house for months,Think what his combo would do in a lighter A body.Oh yeah his screen name is snail something you will see it as you read through the posts.hope he doesnt mind the publicity

 

thanks, ill look for it.

 

that would be snailpower

 

360 Turbo

Thanks 68RR and lotech for the plug...

Dusternut, you are running a combo very similar to my Coronet when it was NA. The advice already given is correct. I use a BTM, but also have my distributor locked. As far as turbo headers, you can go as far and expensive as you want, but a simple set of Dakota exhaust manifolds turned backwards will work great. Get the early 90's style, since they had a 2" inch outlet. The only problem you may run into is the clearance on the drivers side over the PS box. The 70 Chally a friend of mine and I are doing right now ran into that issue, but my B bod did not. A body may or may not have that problem. I used a Master Power T70 (.70/.96) and it works great (and comparativley cheap!). Racegate 46mm, Aeromotive 13202 regulator, Mallory 140 pump with 3/8 feed and 1/2 return. I like Probe pistons, but whatever you choose, get rid of the KBs. Two turbos would actually be easier to plumb, but the lack of room you wind up with is not worth it. Single turbo where your battery sits right now, with SS sched 40 crossover pipe run between the front of the k member and the bottom of the rad support over to the drivers side. I could ramble for a while. Anyway, all of us here will help you on your way so ask away!

 

I didn't lock the distributor on the hot rod. The mechanical advance was limited but I still ran vacuum advance. that way you keep the drivability you want and the boost blows the vac advance back to the base setting.
It's the best of both worlds.

 

thanks for all the advice guys, its really appriciated. im getting my other car on the road right now so i can pull the duster off and start working on it.

 

snail power,what do you think the dollar amount on those parts listed costs,Im sure theres a bunch of little things but I figure I can plug away a little at a time till I can start on it.and thats the big stuff right there.

I have some trw pistons that have been sitting in their box for about ten years,stock comp 8 something 30 over they are forged flatops.Any idea if these would be ok on a 360 with a t70 or similar?I could get the part number but they are nothing trick,just came in a rebuild kit from PAW years ago

 

cost..

I have around $3000.00 in my setup right now (turbo and all related items, not the engine rebuild) but that is everything and the kitchen sink. You can spend much more or less depending on your barter skills and your patience. I chose not to go the junkyard route, and buy everything new. It took me quite a while to gather all of the material and knowledge to feel comfortable in making what I consider to be a major change to the vehicle. If you can wait and gather the nessasary parts, you will have much more fun in the end in my opinion.

As to the TRW forged pistons, I would be hesitant to use them until I did a little research. Anything with a flat top, I would have issues making only 8 to 1 compression. The pistons will work, but only if they are around 8.5 (+ or - .5) to 1 with YOUR cc head. Check it out first.

Feets - it is still funny to me to see "newbie" next to your sig...makes me chuckle

 

Re: cost..

Gotta start somewhere.

 

Mopar Turbo

I have a 'Cuda and want to get a twin turbo set up on it, where do you get the turbo?