Results 1 to 7 of 7

Thread: Large cap HEI with HP to control timing.

  1. #1

    Default Large cap HEI with HP to control timing.

    I've been doing some reading for several days now and have not heard back from Holley support, so I figured I'd ask here.

    A customer dropped his truck off to be dyno tuned, and is using Holley HP EFI and has a large cap HEI distributor. 4-pin module. Is there a way to use this distributor, and have HP control the timing? Obviously I would have to lock out the mechanical advance, and remove the vacuum advance. I've read the thread on GM 7 pin HEI but am still a little confused:
    http://forums.holley.com/showthread....-Large-Cap-HEI

    Basically I want to use the pickup in the distributor for HP EFI. Can this be done? Thanks for any help. Jason

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    23,411

    Default

    Here's a better & more recent thread with pertinent wiring information:
    http://forums.holley.com/showthread....5501#post65501 (Large Cap GM HEI)
    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/3000 RPM converter, FPP aluminum driveshaft, FPP 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 & MT 245/45R17 tires.

  3. #3

    Default

    Danny, I have seen that thread before. Is that referencing a large cap computer controlled distributor, or a mechanical/vacuum advance distributor?

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    23,411

    Default

    Post #1 of that thread indicates it's an EST (Electronic Spark Timing) Distributor (C.C.C. Computer Command Control).
    Post #5 of that same thread, indicates how to connect the four external wires to the Holley EFI Ignition Connector.
    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/3000 RPM converter, FPP aluminum driveshaft, FPP 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 & MT 245/45R17 tires.

  5. #5

    Default

    OK, I just wanted to double check. So a mechanical/vacuum advanced distributor can not be made to work, or am I missing something obvious? Thanks for the reply. I appreciate it.

  6. #6
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    23,411

    Default

    Quote Originally Posted by Jay@HAP View Post
    So a mechanical/vacuum advanced distributor can not be made to work, or am I missing something obvious?
    Well, can't you install the 7-pin EST ignition module (LINK) into your similar distributor (with the centrifugal/vacuum advance locked out)?
    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/3000 RPM converter, FPP aluminum driveshaft, FPP 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 & MT 245/45R17 tires.

  7. #7

    Default

    That's the part of the equation that I was missing. I didn't know if it would be that easy or not. Again, thank you for the help.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us