V6 Vortec to V8 Vortec Conversion

[Bruce]

Oh Carputing, they have an interesting history.
See, that was all going to be Freeware.  Up until they figured out that
after they got the help they needed, that they could make a buck on it.
A check of the archives, will show the truth.
30 people for 15% how generous, hahaha.
I'd rather retrofit an earlier PCM, and buy from tunercat.
Bruce



----- Original Message -----
From: "Gregg Dickson" <gdickson at sbti.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, August 16, 2001 2:00 PM
Subject: RE: V6 Vortec to V8 Vortec Conversion


> Al,
> I may be missing something here but there is an OBDII version of LT1 Edit
> available from www.carputing.com (developed by Dave Hempstead & Ken
Kelly).
> As a matter of fact we are currently mounting a GP on it and have 25 of
our
> 30 required orders to get the 15% discount level.
> As far as scanners for OBDII, there aren't many choices yet. I decided to
> get Alex Peper's OBDII Explorer package (www.obd-2.com). There is another
GP
> being put together for it with a 40% discount ($73 for GM) at
> www.impalassforum.com. This site is down because many of the Impala folks
> are in Detroit this week.
>
> email me off list and I'll send you a bunch of other OBDII links if you
> wish.
>
> Gregg Dickson
> Enterprise IT Architecture
> Stonebridge Technologies
> gdickson at sbti.com
> http://www.sbti.com
> 404.327.4670
>
> -----Original Message-----
> From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
> Of JANETSKY, ALBERT (AIT)
> Sent: Thursday, August 16, 2001 12:35 PM
> To: gmecm at diy-efi.org
> Subject: RE: V6 Vortec to V8 Vortec Conversion
>
>
> ahhh... a reply!  I've realized that in 98 GM started using passlock 2.  I
> think I'll set the 98 PCM on the shelf and see if I can completely
reprogram
> 96 v6 PCM for a v8.
>
> I'm feeling like I might have stumbled into something that I'll find very
> little support for.  Essentially zero support for the obd-ii systems on
the
> web.
>
> I think I can figure out how to interface the obd-ii interface with my
pc...
> but haven't stumbled upon any applications out there that can communicate
> with it.
>
> AL
>
>
> -----Original Message-----
> From: Len Sabatine [mailto:sabatine at epix.net]
> Sent: Thursday, August 16, 2001 10:35 AM
> To: gmecm at diy-efi.org
> Subject: Re: V6 Vortec to V8 Vortec Conversion
>
>
>      While the PC Dyno program may be giving some cool gross HP numbers ,
>      I would be looking at the shape of the torque curve more closely ,
> especially
>      with an OBD2 PCM. Overall , a LT1 F-Y Body production cam w 1.6
rockers
>      will drive better and be easier to get up and running.
>      A '96 Vortec PCM is not identical to a 98  Vortec PCM , just close.
>       Len
>
> >Hello All...
> >
> >My name is Al Janetsky.  I'm a Systems Engineer with a telecommunications
> >organization... and for fun I'm converting a 1996 GMC Sonoma sportside
> >equiped with the 4.3L Central Sequential Fuel Injected Vortec to a 5.7L
V8
> >Vortec. I'm hoping to keep the truck streetable with occasional runs on
> >Saturday nights at the local drag strip (for fun).
> >
> >The donor motor, wiring harness, and PCM is out of a 1998 3/4 ton GMC
> >Sierra.
> >
> >I currently have the engine at Kendricks of San Antonio for my machine
> work.
> >
> >Modifications include porting and resurfacing the Vortech heads.  An LT4
> Hot
> >cam package... 1.6 roller rockers, and upgraded valve springs.  The specs
> on
> >the cam are 218/228 at .525/.525
> >
> >I plan to swap out the v6 pcm for the v8 pcm... (even though they are
> >identical except for the programming).  I plan to use the existing v6
> wiring
> >harness and run a few of the pinouts from the pcm to the fuel injector
> >assembly. I've already traced the pinouts from the ecm to the injectors,
> and
> >think that it will be a fairly straight forward swap.
> >
> >There are a couple of major concerns that I have regarding my project.
> >First off -  Does anyone think this cam is too large for my conversion.
> The
> >vehicle should weigh in at about 3275 after the v8 is installed.  Gearing
> on
> >the vehicle is a 3.08 locker, and the transmission is a 5 sp New Venture
> >3500 that I just rebuilt.  I know that I can give up some low end
torque...
> >and it looks like this cam will make gobs (in comparison to existing) of
> >power way up in the rpm range.
> >
> >A computer program at the machine shop speced out about 330HP with the
use
> >of small tube headers and somewhere near the 400 ft/lbs of torque mark.
> I'm
> >concerned that the PCM will not be able to handle all of the duration.
> >
> >Some other areas that I would like to address are the identification of
the
> >98 OBD-II PCM and how I might be able to custom program the system to be
> >more compatible with the modifications... (including tach, gearing,
manaul
> >trans, etc. etc.)
> >
> >I'm willing to spend time doing the research... but so far it appears
that
> >most of the information on the web is related to older efi systems.  I've
> >considered the hypertech solution... but to me, it's only a duct tape
> >solution being that I can't fine tune the system to my needs.
> >
> >I'd really appreciate any information about the 98 pcm, communication
> >protocols, etc that would get me started in the proper direction.
> >
> >Thankyou,
> >
> >Albert Janetsky
> >aj5242 at txmail.sbc.com
>
>---------------------------------------------------------------------------
> -
> >To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> >in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org