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Thread: MSD 8360 Distributor & 6AL to HP Wiring Harness

  1. #1

    Default MSD 8360 Distributor & 6AL to HP Wiring Harness

    Need Help With MSD 8360 Distributor & 6AL, to HP wiring please. The HP wiring diagram doesn't show how to wire to this setup when controlling timing with the HP. The only diagram I can find is figure 8.6, which shows using a crank trigger. I don't have a crank trigger, and I'll be using the Holley ECU for this. Any wiring help on this would be much appreciated.

    Thanks, Morey
    Last edited by smalliehunter; 05-17-2014 at 12:17 PM.

  2. #2
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    Quote Originally Posted by smalliehunter View Post
    Need Help With MSD 8360 Distributor & 6AL, to HP wiring please.
    This isn't an ECU controlled timing application?
    Why are you using an MSD 8360 distributor?
    Why wouldn't you use a GM small cap HEI (computer controlled) distributor?
    For about $70, you can purchase a new GM small cap HEI distributor from RockAuto.com (Link)

    Excerpt from Holley EFI manual:
    NOTE - It is not advised to use a magnetic pickup distributor to directly feed the magnetic trigger input of the ECU. If the
    magnetic pickup distributor is connected to the ECU via the inductive pickup trigger wires, the pickup/rotor/cap phasing
    must be corrected. This operation may require a phaseable cap or rotor or possibly machining to the distributor and is
    therefore beyond the scope of most users. Even with the phasing corrected, the electrical noise inside the cap
    (due to the high voltage cap & rotor terminals) may be strong enough to cause electrical noise interference.
    It is advised to use a crank trigger system or a computer-controlled distributor.

    http://forums.holley.com/showthread....stem-Questions (Related Forum Thread)
    http://forums.holley.com/showthread....ributor-Timing (Additional Information)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3

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    Hi Danny, thanks for your reply. I was going to use the MSD 8360 as that's what I have now, and just thought it would work with the HP. But if you think the GM small cap HEI would work better, then I'd rather go that route anyway, as my 6AL is mounted under the dash and makes a lot of audible noise (can really hear the spark). Am I correct in assuming that if I go the HEI route, I won't need any other components like the coil and 6AL? Will I need a special harness from Holley? I'm using the unterminated kit, as I want to hide all the injector wiring going to my converted Hilborn 8 stack.

    Thanks, Morey

  4. #4
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    Quote Originally Posted by smalliehunter View Post
    I was going to use the MSD 8360 as that's what I have now, and just thought it would work with the HP.
    Again, is this an ECU controlled timing application?

    But if you think the GM small cap HEI would work better, then I'd rather go that route anyway...
    If you're willing to purchase this for ECU controlled timing, then yes.

    Am I correct in assuming that if I go the HEI route, I won't need any other components like the coil and 6AL?
    I would still run the MSD CD ignition box with the GM small cap HEI distributor:
    http://documents.holley.com/techlibr...10555rev17.pdf (Holley EFI Wiring Manual - Figure 4, Page 13)

    Will I need a special harness from Holley?
    https://www.holley.com/products/fuel.../parts/558-304 (Holley EFI Ignition Adapter Harness)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  5. #5

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    Yes, I want to control my timing with the Holley HP EFI, so I will get the small cap HEI distributor.
    Does MSD make one that would work? Model number would be much appreciated.

    Thanks, Morey

  6. #6
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    Quote Originally Posted by smalliehunter View Post
    Does MSD make one that would work? Model number would be much appreciated.
    MSD 8366: http://www.msdignition.com/product.aspx?id=5365

    Defective ignition modules - common problem with MSD 8366 distributors.
    Replace the ignition module with a genuine GM ignition module.
    (This same rationale applies to Ford TFI distributors too.)
    ‒ Ignition module for MSD 8366 Pro-Billet Distributors:
    GM 19179578
    ACDelco D1943A
    http://www.rockauto.com/dbphp/x,cata...CO_D1943A.html
    http://www.msextra.com/doc/ms1extra/...EI_modules.jpg
    ‒ I'd also verify the GM HEI module polarity is wired correctly:
    http://www.msdignition.com/forum/showthread.php?t=15
    http://www.megamanual.com/ms2/GM_7pinHEI.htm

    ‒ Apply heat sink (thermal conductive) paste on the bottom of the module before installing it.
    Often times, dielectric grease is wrongly used and will lead to an overheated (failed) module.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  7. #7

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    OK, I think you've answered all my questions in a well detailed and very timely manner! Very much appreciated.

    Thanks, Morey

  8. #8

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    I really suggest getting one from your local auto parts store and putting a original GM module in it, like Danny said. I just went thru this...after a couple of months nothing but problems with the MSD 8366 unit. Bought a NEW distributor locally and GM module for $129. My engine runs and starts GREAT!
    Tom

  9. #9
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    Quote Originally Posted by FuelieNova View Post
    I really suggest getting one from your local auto parts store and putting a original GM module in it, like Danny said.
    I was going to mention this, but he specifically asked for an MSD version (probably because it looks better than an OEM unit).
    For about $70, you can purchase a new GM small cap HEI distributor from RockAuto.com (Link). Either way, install a genuine GM module.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  10. #10

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    OK, thanks guys. I have a pretty clean engine compartment that's painted red. The color of my car and MSD red, blends right in. I'd add an image, but I can't figure out how to upload to this page from my PC, it just gives me a URL, not a browse option.

    Morey

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