More Questions. now on 94 p/u

[Mike Rolica]

Yep,  10 cows, 1 bull.   Cow  1500- 2800lbs, bull 3200 pounds, you do the
math.  2-1/2 not necessary, Is a gooseneck like fifth wheel, twin axle
trailer.  Also probably reason why motor all wore out.
Mike Rolica
EXT. 260
 :-)


	-----Original Message-----
	From:	Squash [SMTP:realsquash at yahoo.com]
	Sent:	Monday, October 25, 1999 10:26 AM
	To:	gmecm at efi332.eng.ohio-state.edu
	Subject:	Re: More Questions. now on 94 p/u

	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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