'98 Vortec 350 - Good swap into a Jeep?

[Simpson, James H]

Where is the Crank Pos sensor located on the VorTec?

-----Original Message-----
From: Shannen Durphey [mailto:shannen at grolen.com]
Sent: Wednesday, July 07, 1999 12:35 PM
To: gmecm at efi332.eng.ohio-state.edu
Subject: Re: '98 Vortec 350 - Good swap into a Jeep?


Ken Kelly wrote:
> 
> I'm confused by all the comments on changing the intake,
> etc. Using a Non-OBD-II computer does not require
> changinging the intake manifold and Fuel system. 
>Any of the
> TPI or later electronics could be used with the existing
> Intake. 
Requires it?  No.  I was showing some options for cost effectiveness. 
Do I know whether the Vortech engine he's looking at is complete w/
manifold?  No.  Will I say the only way to go is with the Vortec
manifold?  No. 

> What was the 95 computer used in
> chevy trucks? Is it compatable with the wiring harness?

Is the 95 PCM plug-n-play with 96 harness?  Nope, it's not even
close.  The 95 pickup used a dizzy based tbi system with the 16197427
PCM.  Talking auto trans, 1/2 ton, 350 engine.  Vortech engine uses no
distributor (technical point), crankshaft sensor, sequential pfi.

> Using a 730 or 747 would be a lot more work because of all
> the custom wiring required, 

Depends on your idea of work.  Modifying a harness one time can be
less work and frustration than multiple attempts at modifying ecm
tables.  I would suggest to a novice using a setup close to an
existing calibration to start with.

>although you may be able to use
> the harness and most of the sensors off the old TPI system
> if the locations are similar.

Vortec units are different from previous pfi systems.  Physical
changes to the wiring harness should be a minor issue, though.
Shannen

> 
>         Or if you are running stock 
>keep the whole Vortec system.
> Remember this means Cats, after cat O2 sensors, etc. It does
> get tricky. There are some people out there making O2
> simulators for the AfterCat O2 sensors, but by the time you
> get done modifying the 99 PCM to get rid of OBD-II for your
> Jeep you may be one of the List experts on the Vortec!!
> 
>                 Ken
> 
> > > I guess I'm asking for HELP and recomendations.  I've done engine
swaps
> > > before, I just have NO experience with a VorTec System.
> >
>>  For simplicity, you may want to consider using the new
> > engine with an older computer and maybe the fuel system.
> >

> > Shannen