Holley HP EFI conversion
12-19-2020, 06:44 PM
#121
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Yeah, I'll have to change out valve covers. Spent all day mocking up different ways with current setup. 5hrs today and all I got accomplished was drilled out 2 aluminum spacers and figuring out I can't use my current valve covers. Need to strip and paint new valve covers. They will mount on my current bracket on the side of these valve covers and clear my E-Tops.
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AusScarab29 (03-19-2021)
12-19-2020, 06:49 PM
#123
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Jason, My son found a oem app for regular bbc valve covers with coil mounts, Ive used stock cast aluminum factory valve covers with drippers ground out, stop tabs ground off around perimeter with extra thick rubber/steel bonded gaskets on them, they clear all manifolds and every kind of rocker arm, shaft rocker etc except stud girdles. I bought a set of used 496 valve covers with coils mounted on them, extremely shallow, wouldn't clear anything in a million years BUT as long as these other ones clear manifolds/headers with coils on them , they may be a nice option for you. Ill post a pic when I get time, smitty
I also paid Valako for the exhaust spacers and we'll bring them when I dyno. We'll square up then.
Also terminated my Ford TPS to Holley/LS ends.
Last edited by Rookie; 12-19-2020 at 06:55 PM.
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articfriends (12-21-2020)
12-20-2020, 11:43 PM
#124
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I modified a Moroso mount and used the exhaust bolts .
There`s a ton of different mounts for coils, most of which won`t work for me but might for you just google em .
These guys make some cool ones
https://mavenspeed.com/
saw these at PRI
There`s a ton of different mounts for coils, most of which won`t work for me but might for you just google em .
These guys make some cool ones
https://mavenspeed.com/
saw these at PRI
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Rookie (12-22-2020)
12-22-2020, 11:40 AM
#125
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Jason, heres a pic of the factory valve covers that were full height WITH coil mounts. The one on the left is a 496 vc which was talked about working w spacers, etc. I put two bolts in a imco powerflow manifold on a head on the bench and put vc on and it cleared, not 100% positive will clear w coils bolted on it. Your welcome to take them and do a mockup, i could ups them to you or meet up, i have to go to Dennis rogers in cedar springs in near future too
Last edited by articfriends; 12-22-2020 at 11:45 AM.
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Rookie (12-23-2020)
12-22-2020, 11:44 AM
#126
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identical in height to the "normal" vc overs used on most these too,, as a bonus, no oil drippers inside that need to be ground out. Now, there is a right and left part number too, prob for clearance for some other part like a ac compressor
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Rookie (12-23-2020), sutphen 30 (12-23-2020)
12-25-2020, 01:15 PM
#127
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So heres a little more info on the V covers I posted, the oem app they go to is a BBC L-21, they use a d 580 coil on the oem application, from what Jason told me, a D580 has mounts acrossed from each other vs swtaggered on a D585. The IGNa1 coils posted appear to have the mounts acrossed from each other too fwiw, 78 each onine from gm (the valve covers), Smitty
12-27-2020, 07:18 PM
#128
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A little bit of progress today. I was able to flash the firmware on one ECU today. The firmware on the ECU was V4 64 and downloaded V4 I had on my tablet was V4 110. I was a little nervous about the ECUs. I purchased these early 2018 and they are late 2017 ECUs. I bought the the pair discounted not knowing their condition. They were "NEW" in sealed package when I got them.
When connected to the ECU I was able to get some sensor readings and telling what sensors needed calibration. Next I'm going to figure out how to upload my file I created with all of my engine and sensor parameters.
When connected to the ECU I was able to get some sensor readings and telling what sensors needed calibration. Next I'm going to figure out how to upload my file I created with all of my engine and sensor parameters.
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abones (12-27-2020), articfriends (12-27-2020)
12-27-2020, 08:49 PM
#129
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You don`t wanna do the latest V5 version?
12-27-2020, 09:46 PM
#130
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I could never find V5 software. I didn't search that hard. https://www.holley.com/support/fuel_injection/hp_efi/
I don't know if there would be a big difference with my application. I thought it had more traction control stuff. I do like to have the latest updated software though.
I now found it and just loaded it on my tablet. I'll Flash the ECU tomorrow. You'd think they would update all of their software pages.
I don't know if there would be a big difference with my application. I thought it had more traction control stuff. I do like to have the latest updated software though.
I now found it and just loaded it on my tablet. I'll Flash the ECU tomorrow. You'd think they would update all of their software pages.
