More Questions. now on 94 p/u

[CSH-HQ]

Mike Pitts was working on that one (8625).  Trouble is I ain't seen him post 
lately.  Archives, maybe someone has his e-mail address handy.
  I do have some easy stuff at homw.
Grumpy

>Your on the ball grumpy ;0). Must be getting better!   Correct, pcm is a 625
>I believe.
>Mike Rolica
>EXT. 260
> :-)
>
>
>	-----Original Message-----
>	From:	nacelp at jvlnet.com [SMTP:nacelp at jvlnet.com]
>	Sent:	Monday, October 25, 1999 6:48 PM
>	To:	gmecm at efi332.eng.ohio-state.edu;
>gmecm at efi332.eng.ohio-state.edu
>	Subject:	Re: More Questions. now on 94 p/u
>
>	Reread trany type, he's using a PCM, not ecm.
>	Grumpy
>
>
>
>	>Hmmm...  I think that truck is the year after the last
>	>747 computer was used.
>	>
>	>Are yo usure about that trailer weight?  11 tons? 
>	>22,000 US pounds?  He should be using a 2 1/2 ton
>	>truck to pull that!
>	>
>	>For those mods, the stock ECM will have to be tweaked.
>	> Possibly you can switch to a 747 since it is
>	>completely "hacked" (if it isn't a 747 already).  
>	>
>	>SqUASh
>	>
>	>--- Mike Rolica <mrolica at meridian-mag.com> wrote:
>	>> A while back I got the motor on my old mans pickup
>	>> rebuilt.  It is a 94 Fs
>	>> GMC ¾ ton 4x4 Ext cab shortbox.  It has  350 tbi
>	>> 4spd (60L4E I think) 16"
>	>> tires ect ect.
>	>> He does a lot of towing as he has a farm on the
>	>> side, A 20' 2 axle cattle
>	>> trailer- about 11 tons most of the time.  He goes to
>	>> Denver col. Every year,
>	>> new york, ect. Ect at 200 000km the motor started to
>	>> knock when it was
>	>> cold., burn oil ect.
>	>> 
>	>> We rebuilt the motor using Isky custom sing pattern
>	>> cam, 265 adv., 450 lift
>	>> (I think, it's around there)  I did some work to the
>	>> heads :-) gottem swirl
>	>> chamber buggers to flow a little better (80%)  which
>	>> is the reason for the
>	>> single pattern cam.  Used hyperutectic flattops,
>	>> decked block to .005 in the
>	>> hole.  Runs about 10.5:1.  On the dyno it ran
>	>> awesome, used a Oval track
>	>> distributor some 104 oct and a 2bbl Rochester also
>	>> used for oval track with
>	>> an adapter plate  made up.  Plate was kinda crude as
>	>> intake bores were a bit
>	>> out compared to the carb.  Motor made 300hp,
>	>> 405ft-lbs.
>	>> 
>	>> Now in the truck runs like crap!
>	>> Before, the truck ran rough at idle (shook), smelled
>	>> like rotten eggs some
>	>> times. Now it is worse.  Also sound like a diesel
>	>> when cold until goes into
>	>> closed loop,
>	>> Would appreciate it if some people could give me
>	>> info on the following:
>	>> *	Ecm/pcm type number
>	>> *	Type of prom
>	>> *	Suggested mod to programming for new motor and the
>	>> application of
>	>> the truck
>	>> *	Links to anyone having experience on this ECM
>	>> *	What to do
>	>> *	Any suggestions
>	>> *	Bruce? Any comments
>	>> *	Please
>	>> *	Hacks
>	>> *	Where to look
>	>> Mike Rolica
>	>> EXT. 260
>	>>  :-)
>	>> 
>	>> 
>	>
>	>
>	>=====
>	>
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