More Questions. now on 94 p/u

[CSH-HQ]

Going off the top of my head there are 3 ecms that it could be.
I have some info, but again at home.
I really, Hate to say this, but remind me when I get home, and I'll throw 
some info out there.
Grumpy

>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
> :-)
>