'98 Vortec 350 - Good swap into a Jeep?

[Simpson, James H]

Thanks very much.  This is the help I am looking for!

Jim

-----Original Message-----
From: Shannen Durphey [mailto:shannen at grolen.com]
Sent: Wednesday, July 07, 1999 10:35 AM
To: gmecm at efi332.eng.ohio-state.edu
Subject: Re: '98 Vortec 350 - Good swap into a Jeep?


Simpson, James H wrote:
> 
> Squash,
> I guess I'm asking for HELP and recomendations.  I've done engine swaps
> before, I just have NO experience with a VorTec System.  

Automobiles and light trucks made after 1995 have new requirements for
the emissions/computer system.  OBDII systems are responsible for
monitoring misfire, catalytic converter efficiency, and gas tank and
line integrity.  The OBDII PCMs seem to be more likely to fail a
component than older units.  They are more sensitive to changes in the
drivetrain configuration than OBDI computer systems, and with many
vehicles there is little in the way of aftermarket performance support
available.  For simplicity, you may want to consider using the new
engine with an older computer and maybe the fuel system. 

The intake surface of cylinder heads have a different bolt pattern
than traditional intakes, so you are limited in manifold options.  I'm
running Vortec heads on a car with no efi content, so there are
possibilities that don't include the plastic Chevy manifold.  There
are TBI systems that could be adapted, and there are manifolds that
can be adapted for PFI.  Accell may make a PFI manifold specifically
for the Vortec heads.
There are a few tidbits about Ward's swap in the archives, but they're
only teasers at this point.
Go to the archives: 
http://efi332.eng.ohio-state.edu/diy_efi/asearch.html
Type this in the subject line:  ECM wiring harness help
This should give you some ideas.
Shannen