[Gmecm] 340 EFI (longish)

Scott Pearson mrcad472
Thu Feb 23 15:11:09 UTC 2006


Nice setup! Is that intake a production piece, or did you add injector 
bungs?

I've always liked the small block Dart/Valiant, even better with EFI.

Scott

----- Original Message ----- 
From: <clair.davis at charter.net>
To: "For discussion of GM EFI hardware and software" <gmecm at diy-efi.org>
Sent: Wednesday, February 22, 2006 10:39 PM
Subject: [Gmecm] 340 EFI (longish)


> OK, I've managed to get off my butt and at least upload some photos of the
> EFI system on the old girl.  My web pages are horribly out of date, 
> without
> much chance they will get updated very soon, now that there's a little guy
> (6-months old) in the house.  Still, I try to get out and tinker when I 
> can.
> Here's the nutshell version:
>
> '72-model steel-crank 340, with PERHAPS 8.5:1 compression.  It had been
> rebuilt by the previous owner, and I didn't want to do a full rebuild and
> take more life out of this relatively rare block, so I just freshened it 
> up
> and went with it.  Heads are smog castings with bowl porting and port
> matching, 2.02/1.60 valves.  Cam is a relatively mild Crane HMV272, also
> from the spare parts bin in the garage.  It made 260hp and 300lb-ft at the
> rear wheels when I took it to a dyno a year ago.  It managed 13" of vacuum
> at idle with the carb, which is my main worry with the chip that came with
> my kit - I need 15.
>
> The kit, BTW, is a 7730 controller with a custom chip made to work with my
> engine combo based upon info I provided to the guys at
> http://www.affordable-fuel-injection.com/   They also provided a new 
> wiring
> harness, throttle body, 24# injectors, fuel pump, regulator, a "box" to 
> work
> with my distributor, and all the sensors needed.  I supplied the intake
> manifold, distributor (OEM Chrysler "Lean Burn" magnetic pickup), OEM 
> Dodge
> Magnum truck fuel rails, and other various items.  I've also made some
> substantial changes to the system in the throttle body and FPR areas, so
> some of the parts supplied in the kit aren't on the car.
>
> Although I'm sure the system will run, I'm equally sure some tuning will 
> be
> required, and that's why I've been lurking here and on DIY-EFI for the 
> last
> 3 years or so.  Anyway, on to the photos...
>
> I've finally got all but the last couple of details sorted out on my
> serpentine belt project, and can now get on with finishing up the EFI
> install.  Here's some pics:
>
> Mopar Performance M1 Magnum engine EFI manifold:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/efi/M1_Magnum_Intake-01.JPG
>
> OEM air cleaner installed:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/efi/Air_Cleaner-02.JPG
>
> Throttle body view, with most of the OEM Magnum engine serpentine system 
> in
> place:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/efi/TB_Serp_On-small.JPG
>
> The serpentine system was a tedious project in and of itself.  I did the
> upgrade so that I could have a higher-amp alternator to be sure the EFI 
> was
> getting enough juice, and to also run the electric fan and AC system that 
> is
> in the works.  Serp upgrade photos...
>
> Belt Installed:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/serpentine/Belt_Installed-03.jpg
>
> New water pump pulley clearance (the mag system is at least an inch 
> shorter
> than the LA)
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/serpentine/Serp_Fan_Clearance-01.JPG
>
> Nature abhors a vacuum... a fatter Volvo fan eats up some of the new-found
> space:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/serpentine/Serp_Fan_Clearance-02.JPG
>
>
> That about get us caught up with where we are as of three weeks ago.  No
> progress since then, too many honey-do's and crappy weather lately.  The
> goal is to be running by late March...
>
> Clair
> 69 Valiant 340/7730
> Fort Worth, TX
>
>
>> ----- Original Message ----- 
>> From: "Bill Shaw" <b.shaw at comcast.net>
>> To: <gmecm at diy-efi.org>
>> Sent: Saturday, February 18, 2006 10:04 PM
>> Subject: [Gmecm] Was: Bellhousing Design-Iron Duke - Now: 340 EFI
>>
>>
>> > >
>> > > At 04:51 PM 2/18/2006 -0600, Mike wrote:
>> > >> Greg55_99 has really done some excellent salvage yard research, and
> has
>> > >> given me some interesting things to think about... like how would a
>> Neon
>> > >> SRT-4 engine with a 5-speed motivate a 2400# early Dodge Dart?
>> Hopefully
>> > >> there will be some nice little tidbits there for you, too.
>> > >
>> > > Awe c'mon !!
>> > > No peektures?
>> > > Be a pal.
>> > > MV
>> > >
>> >
>> > Yes Clair,  and how about an update on your 340 EFI project while 
>> > you're
>> at
>> > it!
>> >
>> > Bill
>> > '84 928s 4.7L 5 sp. - Vortech/749
>> >
>> > _______________________________________________
>> > Gmecm mailing list
>> > Gmecm at diy-efi.org
>> > http://lists.diy-efi.org/mailman/listinfo/gmecm
>> >
>>
>
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