What base fuel pressure should I be running? I've got it set for 43#'s right now. Bryan built my image so I guess I could ask him. What pill should I be running in the 6AL? I've got a 6000 in there now and it seems as though it wants more. What RPM should I be shifting at for the best power? I'm running a 6" crank pulley and a 2.75 compressor pulley. Shouldn't I see more than 5 lbs.? It runs strong, don't get me wrong. I just want to make sure of these things.

I've got no traction on 40 series tires, I can only imagine what it would be like with more pressure.

 

Anybody?

 

Shoot for 42.5psi with the vac line off the regulator (assuming your running the semiens injectors or equivelent). 5psi might be right with that stroker since it's a lot more efficent. You might want to look into having ASP make you up a 7" crank pulley if you want to up the boost. I'm running the 7" with a 2.75 head unit pulley on my T-trim 383 and making about 12 or 13psi with a FMIC. Used to make about 14psi, but lost some with the intercooler, but the HUGE drop in intake temps will more then make up for that. I have a 6400rpm pill in my 6al but my shift light is set to 6200 along with my window switch for my nitrous. So i shift just before the rpm cut off. If your gonna dyno at some point, then put a little higher pill (like the 6400) and run it up to there and see what your power does. If it keeps climbing up to that point, then put a little higher pill in there. If it starts falling off at around 6k, then leave the 6k pill in there. Let your power curve dictate what pill your gonna run in there. I would guess you'll probably start falling off just north of 6k somewhere.

Ken R.

 

Oops, just noticed your running the S-trim. 5psi is probably right, plus its too small for that 383. Your power will probably drop off sooner cause that S won't supply enough air that your 383 will want. It will run good for now, but may generate more heat then anything on the top end. It would run like a bat out of hell with a T-trim or equivelant. Mine was night and day difference when i went from an S to a T on my 383. A 7" crank pulley may net you somewhere between 7 to 10psi on that S-trim.

Ken R.

 

Thanks roguedriver, that's the answers I was looking for. I'd like to go with a T-Trim, but the S-Trim is what I was dealt at this point. I'm keeping my eyes open for one though. I've been wanting to ask you, what did you do to your bumper cover to get the the airflow across your FMIC? I seem to remember you saying something about using a mesh, but how did you attach it?
Chas

 

I cut 2 holes on either side of the bowtie in the nose for more flow. I used the rubber door edge molding around the edges for a clean finished look. You can pick that stuff up at pep boys, autozone ect. I used the mesh on the back side of the nose. Around the old fog light openings, i cut a piece a couple of inches larger on top, bottom and the sides of the opening so i could wrap the mesh around the hole (cause it is recessed when looking from the back). I used a 2 part epoxy for plastic to adhere it. That stuff you can pick up at lowes, home depot ect. For the holes i cut, i just cut a piece a couple of inches larger then the opening and again, used epoxy to adhere it. It's holding up well. I forgot the name of the mesh, but i found it in the concrete/gutter isle of home depot. It's a stiff mesh but comes in a roll. Not so stiff that you can't form it, but stiff enough to hold up well and look pretty good.
http://s125.photobucket.com/albums/p...rcooler017.jpg
http://s125.photobucket.com/albums/p...rcooler015.jpg

I get a ton of airflow to the intercooler set up like this and it doesn't take long for the intake air temps to drop to ambient temp outside.

Ken R.

 

Thanks for the info roguedriver. I think that is the way that I am going to go for airflow.

Chas

 

I'm running about the exact same setup as you are. I am using a 7'' crank with 3.13'' blower pulley and it makes about 9lbs of boost at 5700rpms. I'm using meth/water injection for intercooling. I don't know what you are using for headers, but i have BBK shorties and power falls off after 5700rpms so I am guessing your rev limiter is set in the ballpark. It makes 538rwhp and 514rwtq at 5700rpms, I'm think the blower is also out of steam.

Your fuel pressure is fine at 43psi, mine is set around 50psi base but you need to have it matched to what it is set for in your tunning.

I might be parting my setup out in the next month or two, and I would be selling my ASP 7'' crank pulley made for a ATI super damper.

Let me know if you have any interest.

Dallas

 

Thats right about where i was starting to fall off in power also when i had my s-trim on there also making around the same boost.

Ken R.