Anyone using a Holley Pro-jection 4d system?
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,031
Likes: 1
From: Republic of Texas
Anyone using a Holley Pro-jection 4d system?
I am thinking about yanking the quadrajunk off of my '69 and putting a FI system on it. I would rather not replace the manifold so I am leaning toward the 700 CFM Holley 4d system.
Anyone using one? Is it the one with preset fuel curves or is it adjustable? Is the custom adjustable one worth an extra $200 for a cruiser (i.e. not raced)?
Anyone know of a competing system that works well?
Thanks!
Anyone using one? Is it the one with preset fuel curves or is it adjustable? Is the custom adjustable one worth an extra $200 for a cruiser (i.e. not raced)?
Anyone know of a competing system that works well?
Thanks!
Racer
Joined: Aug 2001
Posts: 356
Likes: 0
From: Glacier County mt
Re: Anyone using a Holley Pro-jection 4d system? (91mongoose)
I went that route before. The ECU is rather crude.
Use the Holley Commander 950 ECU - either throttle body or MPI.
The old Holley Projection CPU just doesn't cut the mustard!
:cheers: :cheers:
[Modified by shawn_cake, 2:59 PM 6/30/2002]
Use the Holley Commander 950 ECU - either throttle body or MPI.
The old Holley Projection CPU just doesn't cut the mustard!
:cheers: :cheers:
[Modified by shawn_cake, 2:59 PM 6/30/2002]
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
Re: Anyone using a Holley Pro-jection 4d system? (91mongoose)
I'm in the process of installing a 900DI setup on my 70 L-46. First I installed the MSD 6AL and pro billet Vette tach drive dist . Next is the DI. The best thing about this is I'm going to be able to use the laptop feature for tuning. (fuel map adjusting, timing control)
Everyone said I couldn't hook it up to the MSD stuff. I wanted to keep the mechanical tach functioning, so I finally got the solution to the problem from Holley and MSD tech's. This way I'll retain the msd setup which I wanted and have the adjustability of the Holley system.
I don't believe the "Holley D system" has the tuning ability of the DI. Neither are as good as the commander setup. I could have upgraded to the commander for a $1000.00, but I would still have to rig up the MSD just like I'm doing with the DI. Not worth the cost for the wiring harness and control unit.
I think the only difference is the commander is adjustable while the engine runs, and the D, and DI need a "no run" to adjust.
If your interested in the set up to retain your mechanical tach let me know.
Everyone said I couldn't hook it up to the MSD stuff. I wanted to keep the mechanical tach functioning, so I finally got the solution to the problem from Holley and MSD tech's. This way I'll retain the msd setup which I wanted and have the adjustability of the Holley system.
I don't believe the "Holley D system" has the tuning ability of the DI. Neither are as good as the commander setup. I could have upgraded to the commander for a $1000.00, but I would still have to rig up the MSD just like I'm doing with the DI. Not worth the cost for the wiring harness and control unit.
I think the only difference is the commander is adjustable while the engine runs, and the D, and DI need a "no run" to adjust.
If your interested in the set up to retain your mechanical tach let me know.
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
Re: Anyone using a Holley Pro-jection 4d system? (subboz)
OK, here goes. You will need a 8 pin ignition module( I'm using Holleys# 891- 103). Also a heat sink(any radio shack or equivalent)
Starting with the 6AL box. Might seem strange, since I'm using a MSD ditributor, but the magnetic trigger connector(green and violet), on the box is not used. From the loose wires on the box, the heavy black and red to the battery, preferably. The orange(+), and the black(-) to the coil. The red to a switched power( have a terminal in the fuse panel for this). Splice in another red lead into this wire. This spliced wire along with the white wire from the 6AL box go to module 2 wire connector(there's a "C" and a "+" on the module) White to "C" and red to "+". This is the coil side of the module. The 4 pin connector is also on this side for reference. The pro jection 4 wire plug goes to the module 4 pin connector. (Use Holley adapter #534-47 to connect) The last 2 terminals on the module ("P" and "N" run to the MSD distributor violet +, and green wires. Mount the module with the heat sink on the fire wall and your ready to go. If I can figure out how to add the techs schematic to my sig I'll post it. A lot easier to understand.
Starting with the 6AL box. Might seem strange, since I'm using a MSD ditributor, but the magnetic trigger connector(green and violet), on the box is not used. From the loose wires on the box, the heavy black and red to the battery, preferably. The orange(+), and the black(-) to the coil. The red to a switched power( have a terminal in the fuse panel for this). Splice in another red lead into this wire. This spliced wire along with the white wire from the 6AL box go to module 2 wire connector(there's a "C" and a "+" on the module) White to "C" and red to "+". This is the coil side of the module. The 4 pin connector is also on this side for reference. The pro jection 4 wire plug goes to the module 4 pin connector. (Use Holley adapter #534-47 to connect) The last 2 terminals on the module ("P" and "N" run to the MSD distributor violet +, and green wires. Mount the module with the heat sink on the fire wall and your ready to go. If I can figure out how to add the techs schematic to my sig I'll post it. A lot easier to understand.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Anyone using a Holley Pro-jection 4d system? (dennis)
Dennis
Exactly which system are you running, where did you get and what did it cost in total to set up? I have the 6a and billet dist so I am half way there. Sounds very interesting. I am going to search the Holley website too.
Thanks
Chris
Exactly which system are you running, where did you get and what did it cost in total to set up? I have the 6a and billet dist so I am half way there. Sounds very interesting. I am going to search the Holley website too.
Thanks
Chris
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,031
Likes: 1
From: Republic of Texas
Re: Anyone using a Holley Pro-jection 4d system? (Schmucker)
Edlebrock has a 1000cfm system that you can tune down to something more like the 700cfm you want or whatever I guess.
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Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 3,031
Likes: 1
From: Republic of Texas
Re: Anyone using a Holley Pro-jection 4d system?
Dennis,
Thanks for the info! I had planned on sticking with the stock distributor and not letting the computer control the timing, but I think I may have to check into your solution. It sounds too sweet to ignore.
:cheers:
[Modified by 91mongoose, 10:22 PM 6/30/2002]
Thanks for the info! I had planned on sticking with the stock distributor and not letting the computer control the timing, but I think I may have to check into your solution. It sounds too sweet to ignore.
:cheers:
[Modified by 91mongoose, 10:22 PM 6/30/2002]
Drifting
Joined: Sep 1999
Posts: 1,970
Likes: 91
Re: Anyone using a Holley Pro-jection 4d system? (Fevre)
Dennis
Exactly which system are you running, where did you get and what did it cost in total to set up? I have the 6a and billet dist so I am half way there. Sounds very interesting. I am going to search the Holley website too.
Chris
Exactly which system are you running, where did you get and what did it cost in total to set up? I have the 6a and billet dist so I am half way there. Sounds very interesting. I am going to search the Holley website too.
Chris
I'm running the 900 cfm 4DI. I bought at a very good price here on the forum. The 950 goes for 1200.00 or so. You have to set that up the same way to run the MSD stuff. You won't find this setup explained on the Holley site. I lucked out at a NHRA national where the Holley and MSD tech's were set up with tents. I ran from one tent to the other to make sure they both agreed with the setup of their systems in this. I'll post the schematic later.
