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i have been working on this car for years now but my latest upgrade has been the Holley EFI terminator. While I upgraded to fuel injection I decided to modify the harness for LS coil packs. To accomplish this I removed the entire MSD setup (6al, coil and distributor) and installed a dual sync cam/crank sensor with LS3 coil packs.
My goal is to gain driveability on this setup which is a 427 dart small block with a t56 6 speed and toms differential. It’s by no means a show car but I’m happy with how it turned out. What do you think of my mounting location:
That's a really cool project you have going there. I am currently restoring may LS% and am considering going with EFI. Any chance you could post more pictures of your engine and the EFI components? Looks like you are running side exhaust too? How did you do your Ox sensor?
Picture is a little fuzzy....but I mounted my Holley coils inside the car behind the dash and used MSD "passthroughs" to connect things. Short set of wires to passthrough from the coils and then another set from the engine compartment side to the plugs. Like you, I was able to run wires from underneath and avoid heat of headers and generally clean things up.
I like seeing everyone else’s solution for coil pack location. To answer one question above, there is at least 9 inches between the headers and the coil packs.
i took a few more picture of my current status but remember it is still a work in progress.
I posted a pic of my wideband location on the Sidepipe. It is as high as I can get it although not ideal. I also know that my heater core is leaking as you can see by the coolant drips in that same picture.
Nice! Thanks, I really appreciate you posting the pictures.
I also went with a Holley HP EFI and then LS3 generation truck takeoff coils. I haven't figured out how to mount the coils yet as I've got a lot of engine work ahead of me first, but I really like getting to see this solution.
I assume you made custom length spark plug wires to do this, right? (roughly how long is the longest wire?) -Did you make those coil brackets yourself, too?
-I've got the TCI EZ-TCU transmission controller computer in my glove box already, but I need to see if I can fit the Holley HP ECU in there, too.
Adam
Last edited by NewbVetteGuy; 06-11-2018 at 02:07 PM.
I did make my own custom length wires. I just cut down my old distributor wires and used the Taylor coil ends.
I made my own brackets for the coils but I would recommend just buying the Ebay kit that looks similar for $46 shipped. I had that into my setup plus the time.
Im very interested in seeing what you come up with. I modified my HP harness to accept some of the sensors that aren’t normally pinned including oil pressure. Then with the inputs and outputs I added vehicle speed, fuel level, oil temperature, fan control, reverse lockout and a/c control.
Why didn’t you opt to use the Holley dominator with trans control? I know it’s more expensive but one module does both for you, not to mention the increased number of inputs and outputs.
I did make my own custom length wires. I just cut down my old distributor wires and used the Taylor coil ends.
I made my own brackets for the coils but I would recommend just buying the Ebay kit that looks similar for $46 shipped. I had that into my setup plus the time.
Im very interested in seeing what you come up with. I modified my HP harness to accept some of the sensors that aren’t normally pinned including oil pressure. Then with the inputs and outputs I added vehicle speed, fuel level, oil temperature, fan control, reverse lockout and a/c control.
Why didn’t you opt to use the Holley dominator with trans control? I know it’s more expensive but one module does both for you, not to mention the increased number of inputs and outputs.
Matt
Good tip on buying the Ebay kit. My coils came with the stock heavy steel truck brackets; I'll probably just use them, but any time I can save weight...
I went with the Holley Stealth Ram / TPI harness, then bought the Coil-On-Plug sub-harness. I also bought the 60-2 crank trigger kit and a vortec 1x cam sensor. I'm using a TPI-style intake from "First Fuel Injection" so I'm doing sequential multi port injection, so the Holley HP was required.
I did the 4L60e trans swap BEFORE the EFI and wanted to do it in stages; I picked up the trans controlled for a good price off of ebay NIB. I thought that the Holley Dominator was a very race-focused product and wasn't self-tuning, but either way the Dominator seemed like a big jump in price for a feature I wasn't going to use because I already had the trans computer installed and ready-to-go.
Adam
P.S. I like seeing your painted frame; someone's been treating that car of yours nicely. (I spent 7 of the last 8 weekends getting my frame to look like that, and I only did behind the front wheels and back.
Last edited by NewbVetteGuy; 06-11-2018 at 02:54 PM.
06-09-2018, 05:50 PM
Holley HP EFI w/coil packs
