Mkos1980

To start we are leaving in the stock dizzy but just for the cam sensor till we figure more stuff out.

scuzz

Go to this thread 69ghost and I were posting to before this post:
http://www.thirdgen.org/techboard/di...ion-gen-i.html (Sequential Injection on a Gen I Motor!)
I think Craig starts chiming in at post 34 about his project, and I think he used a stealthram.
Ron

dimented24x7

Anyone know if there are any alternate options for the crank sensor? Im going to be running a pre-87 block with a retro-roller, so the vortec pick up really isnt an option.

jwscab

probably have to make one to run behind the balancer, in between the balancer and timing chain cover. could probably re-use the vortec sensor. I think there is room for about a 1/4" plate. I have a 'plan' eventually to run a northstar coil pack, and the notched wheel is going to run behind the balancer, using some spacers and bolts coming though the back of the balancer so that the pulleys would mount on the bolts like they were studs. At least in theory.......

otherwise, maybe run behind the pulley, but you would have to space the whole accessory system out.

could probably use a flying magnet if you put a signal conditioner on the sensor. either a standard MSD type setup, or maybe something that runs off the flywheel.

dimented24x7

I was thinking of the flying magnet setup. MSD makes a general use hall effect sensor, but Im wondering if there are any requirements for the pulse duration for the PCM to trigger properly.

Dale

talk to Six_Shooter off the v6 forum. He made his own bracket system for a crank sensor on a v6 motor. Could use some of his thoughts on making one for a v8.

jwscab

yeah, thats why I meant by signal conditioning. You could build a flip flop circuit that triggers on every pulse to create a 50% duty cycled signal to feed to the ecm.

5.0 Eater

from what i understand the majority of the gurth of the fuel rail is just cooling fins. if you were to cut a couple of inches off the end of the tube there would just be a hole in the center of the shaft that would need to be tapped and fitted with a fitting. I don't think it would be open the entire area of the shaft. i know you can buy bulk fuel rail that comes in like 4 foot section that you just cut to fit and drill your injector holes and feed lines. it physicaly looks the same. i have a hsr and will soon cut the ends off to see.

scuzz

Look at this post as to what I did to my Ramjet intake to shorten both sides.
http://www.thirdgen.org/techboard/di...ion-gen-i.html (Sequential Injection on a Gen I Motor!)
Read message #29 as to modding them.
I think someone else welded up the ends after shortening and tapped hole in side of rail. I tried to keep fuel flow smooth as I could.

RickU

Great thread I just read through the whole thing. I have a question though. I have a '97 GMC Safari with a 4.3L V6 CSFI and OBDII with a 4L60E. I'm going to swap in a '96-'99 Vortec 5.7L V8 with either a HSR, or a Ram Jet and a ZZ 4 or LT 4 hot cam. My question is, can I use my exsisting black box PCM to control this set up or should I convert to the 0411? I read the marine intake thread at Pacific Performance forum, and the HSR or Ram Jet look like way better options then the marine intake. I know power costs money, but like everyone I want to keep costs down. I'm just looking for the easiest way to get rid of the congested CSFI Vortec manifold and keep OBDII functioning with no error codes, because they test where I live. Thanks.

scuzz

You should be able to control it with your old PCM, but the 0411 is just a much better and more tunable PCM.
http://www.fullsizechevy.com/forums/...7l-vortec.html
Check out the thread and all links in thread.
It's been done before.

RickU

Thanks for posting that link. I guess I should have figured that if my compuer can run the marine intake it should run others with similar injectors(Duh).I have another question though. They emission test where I live by checking at the OBDII port. Can either PCM(black box or 411) be programed to run a V8 file and still be able to run my trucks VIN #(a V6 with a W in the #)? I don't know for sure, but I would imagine when they check the OBDII for function and error codes they are also checking the VIN #. Maybe Lextech could help answer some of this since he get's tested in suburban Chicago also.

battman

You can program any vin you like in the 0411 PCM. so yes you can change your ecm and os and still retain the original vin.

RickU

That's great news. Another reason to switch to the 0411. That's what I'll be doing then.Thanks for the reply.

shocker89bird

Hey thanx Ron for looking back. I had talk to Craig in the past and ask for suggestsions. unfortuantely I have been unable to find anyone nearby that is willing to look at the distributors or tackle the fuel rails. Kinda aggrivating lol. I pmed Craig to see if he would be willing to take a look at the distributors again. I am sure he doesn't want that headache again though lol.

badgta

so basically where are we at with everything?.... and is there anyone thats selling a complete conversion kit yet?

scuzz

I doubt that anyone will, because every installation is going to be somewhat different.
Part of the enjoyment I get from this kind of stuff, is seeing how much I can do on my own.
I do have to depend on someone else to do a harness, but my gratification, is to put something together the best I can, and see if the D**n stuff will work.
If it refuses to co-operate, a lot is learned by back tracking to see what you did wrong.
I wish I'd had a stronger background in electronics instead of shadetree engineering though.
Everyone had different skill levels though, and one of the great things about this site, is there's always someone willing to help.
I do a lot of Honda stuff as well, and when you post questions on a lot of those sites, you get a lot of wise *** answers about how you should already know that or "look it up".
Not here, unless is has been hashed several times already.

S10Wildside

Unfortunately there will never be a universal kit for this conversion due to the differences in wire harnesses throughout the models (V6, V8 TBI, V8 TPI, etc) and the years (85-88 are the "easy" ones, 89 and newer are much more involved).

Even if the harness could be universal, the PCM tuning will still be custom. Of the dozen or so cars that have received this conversion, I don't think any one of them have a stock 350 TPI engine.

It's a great conversion and will likely continue to be unique to each car that receives it.

PonyKiller87

I didn't see this come up anywhere yet. What are you guys doing as far as fuel pressure? I know the vortec truck engines run around 62 psi and the TPI uses around 42 psi. So do you stick with the TPI setting or bump it up to what the computer is expecting to see?

scuzz

I thought the L31 used 19# injectors. The pumps are basically compatible with TPI and LT1 pumps.
I used a 96 truck pump in my tank with 24# injectors, and my Ramjet has a LT1 type regulator on it, and I tweeked up my injector settings by about 7 percent in the 0411 PCM to reflect the bigger injector.

Black85sport

Has anyone started with a 01 411 4.3 wiring harness and used it with a V8 setup? I bought a 411 ecm on ebay and it comes with the vortec 4.3 harness. I assume its relatively easy to add the extra two injectors?

scuzz

On one of the S10 V8 boards, I saw an article where some guys are using the later L31 engines in 96 up S10 bodies, and they just change the length of some of the engine wires and run two extra injector wires.
Then re-flash the PCM or replace for the V8 cal.
I can't remember where it was though.
Attached is a pic of the V8 injector plug for comparison to the V6.

Attached Images

cpi-pinout.jpg (57.6 KB, 22 views)

dimented24x7

At the very least youll have to adjust the cal to input the correct # of cylinders, or a direct overwrite with a V8 cal. There are probably other parameters in there to configure the hardware for the extra two cylinders and difference in reference pulses per rev. Some portions, especially the RPM calculations, are dependant on the # of cylinders. Theres also the possibility that there are differences at the hardware level.

Black85sport

I found a tune for the 350 express van that I will use to run the setup. I'm assuming I can just overwrite the tune thats already on the ecm with HPTuners.

I didn't mention it in my post above, but I want to run a TPI multi-port setup on my engine. The harness came in the mail this morning. The thought of the vortecs using only one injector never even crossed my mind. My harness only has one plug. But what I paid for the harness and the 411 ecm, I can't go wrong.

I do have a leftover TPI harness from a 1990 Corvette that used the weatherpack ecm. I *should* be able to make one good harness out of the two.

Dale

sport, your doing the same thing as I did. I merged two harness together.

Correction though, vortecs used 8 poppet injectors. Not one.

dimented24x7

Anyone know what the resistance of the poppet solenoids are? The 98/99 one I have has small transisters w/o heatsinking in it and Im wondering if they can handle regular injectors at 12-14 ohms.