Repair Guides | Engine Electrical | Distributor | AutoZone.com Fig.Early Gm Hei Wiring Illustration - General Motors developed the High Energy Ignition, also known as the HEI system. The HEI uses a pointless distributor. It was first equipped on some GM cars and trucks beginning in the early seventies, and became standard equipment by the mid-seventies.. So you need to run a new wire to power the new HEI distributor properly. An HEI distributor draws more power than a points ignition, and the power wire should be the same as GM used on factory HEI installations (12 gauge wire) or larger (10 gauge wire). Don't skimp - do it right.. Instructions for Installation of Summit HEI Distributors Equipped with an Adjustable Vacuum Advance Kit 1. Remove the air cleaner if necessary to gain access to the base of the distributor. It is a good idea to cover the carburetor with a shop rag or a piece of plastic to protect against the accidental dropping of any small parts into the.
Jun 19, 2008 · not all tbi systems use an electronic advance disy - the early 454 tbi had a HEI, with a mechanical advance -- do you have a electronic advance system ? are you using a 7 pin ignition module ? is the disy mechanical advance locked or removed ? get a system diagram and check the wiring - what engine and year harness ? _____. Early Ford and GM: To solve the Run-On problem, a Diode is supplied with the MSD in the parts bag. By installing this Diode in-line of the wire that goes to the Charging indicator, the voltage is kept from entering the MSD. Page 9. C.. Features & Benefits. The ultimate HEI kit has everything you need to make your early model GM HEI distributor a great performance distributor! The kit is supplied with MSD’s digital heat module (PN 83647), MSD s GM HEI coil (PN 8225) pro billet HEI cap (PN 84111), and rotor (PN 84101)..
Wiring Connect the tachometer wires as shown. The wiring diagram shown is a typical installation. diagram illustration on the right. 4 Cyl.- Both switches down 6 Cyl.- Switch #1 down. Switch #2 up 8 Cyl.- Both switches up GM HEI CD, and electronic ignitions. Accel Laser I & II, and BEI ignitions are compatible with the Auto. May 18, 2008 · No resistor wire with GM HEI! No ballast resistor with GM HEI! If the wire is not connected thru a switched source you will have no way to shut it off. Wiring directly from the starter solenoid will make the ignition "ON" all the time.. Jan 04, 2010 · I would use a GM HEI style module with that distributor. It runs about $20 or $25, And you ask for a module from a '79 Chevy Impala. Then use a wiring diagram I've posted before to wire up your ignition, This will give you an electronic ignition that doesn't require a.
High energy ignition, also known as H.E.I., is an electronic ignition system designed by the Delco-Remy Division of General Motors, and introduced on some GM vehicles in 1974, including the Camaro Z28 Special High Performance (with 3123 units factory installed).. Jan 01, 2006 · I put an HEI in my '57 GMC V8 years ago. Easy to do and works well. Assuming it is an early HEI (pre-computer with only two connections) one connection is tach output and the other is +12V.. The HEI module I use is from a '79 Chevy Impala with a V-8 engine, Or any GM HEI 4 Pin Module for a V-8 engine used from about '75 to about '81 The same module was used for every car, 4, 6 or 8 cylinder, and more places have the 'V-8' version in stock.
Mar 22, 2016 · HEI's need 12V power you can't use a Resistor or Resistor wire. If you do they wont operate properly = weak or no spark. That is what I was thinking, as the voltage goes lower the current will have to go higher to try to fire the coil.. On other designs, the control module was mounted outside the distributor with external wiring to connect it to the pickup coil. On many General Motors engines, the control module was inside the distributor and the coil was mounted on top of the distributor for a one piece unitized ignition system. GM called it High Energy Ignition or HEI for short..