[Diy_efi] Mopar Small Block EFI Project

David Allen davida1
Sun Sep 3 18:05:40 UTC 2006


  Thanks for the pictures!  That clears up my confusion, I had thought you had somehow adapted a small-block Chevy intake manifold to a Mopar engine!  
  You'll not be disappointed with it- every swap I have done has done nothing but improve the engine's reliability and performance.
  With full control over the engine, you'll definately have an easy time exceeding the stock carb'ed power level.  Oh, the joys of real-time tuning!
  It looks like the Mopar TB uses the same stepping-motor IAC valve as Rochester did.  That will be a blessing for your retrofit.  Is the throttle position sensor also adaptable to the Delco computer?
  That's a fine looking car, by the way.
David



----- Original Message ----- 
From: "Clair Davis" <clair.davis at charter.net>
To: "diy_efi" <diy_efi at diy-efi.org>
Sent: Sunday, September 03, 2006 12:19 PM
Subject: [Diy_efi] Mopar Small Block EFI Project


> For a brief recap on the project, I'll include some links to photos I've
> collected over the last couple of years.  No formal web page yet, I've only
> gotten as far as uploading the photos.  Goal is to have a fun daily driver
> with old-school style and modern reliability and handling.  She'll also see
> a few autocrosses every year.
> 
> Here's the car, a 1969 Plymouth Valiant 2-door post sedan:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/In_The_Park2-PS-Clipped.JPG
> 
> Engine is a low-compression 340ci/5.6L V-8 from the early 70's, freshened up
> by me in the late 90's.  In carbureted form, it makes 260 hp and 290 lb-ft
> of torque at the rear wheels.  Runs just fine on 89 octane, and might
> tolerate 87, but I haven't tried.
> http://users2.ev1.net/~clairdavis/webimages/340/72tweaked340-Chassis-640.jpg
> 
> The nuts and bolts are that I've got a '730 ECM & wiring harness, a pile of
> GM sensors, a pile of Mopar sensors, and a pile of Mopar hard parts, and
> I've been working to make those three piles in to one coherent package.
> 
> Mopar Performance makes, or made, an EFI-ready single plane intake for the
> Magnum V-8 trucks to replace the restrictive beer-barrel intake manifold,
> using all the OEM Magnum fuel goodies - rails, injectors, sensors, throttle
> body, etc.  This is the intake I have:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/efi/M1_Magnum_Intake-01.JPG
> 
> Distributor is a no-advance unit from a late-1980's "Lean Burn" carbureted
> small block:
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/efi/Reluctor_Pickup-01.JPG
> 
> Throttle body is also a Mopar Performance piece, 1000cfm 4V, billet
> aluminum, all the Magnum sensors (TPS, MAP, IAC).
> http://users2.ev1.net/~clairdavis/webimages/69sedan/upgrades/efi/Throttle%20Body.JPG
> 
> I still have to wire up the coil & mount the 8-pin HEI ignition control
> unit, but that's about it for wiring.  That's also where I've got a couple
> remaining questions, but I'll get to those later.  I'm really looking
> forward to getting the old girl back on the road, and then seeing how far I
> can tune the EFI to improve the package.
> 
> Clair
> Fort Worth, TX
> 
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