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Ecklers AutoMotive
Username Post: Gm hei wiring diagram in 59        (Topic#354134)
Hourston 
Poster
Posts: 5

Reg: 01-24-17
11-29-18 06:21 PM - Post#2752835    

Hey guys about to put a gm big cap style hei in my 59 impala
I have done it before in other cars but the years have past and i cant seem to figure it out for the 59.
I dont know yet if it will even fit with the fire wall clearance.
Any help appreciated




 
Ecklers AutoMotive
ARTEMIS1759 
Contributor
Posts: 139
ARTEMIS1759
Reg: 04-12-09
01-31-19 12:29 PM - Post#2758674    
    In response to Hourston

I can't help you to a T. But, I have done this on my 58 and Dad's 59. I believe you are looking for the green wire to the coil, get a 10 pink wire and that hooks to the pink wire on the cap. The other goes to the S terminal on starter. To verify, the best way is get a manual for a vehicle with HEI and check the wiring diagram. Then cross reference to the 59 diagram. That's how I always do it.

To those who dance to the beat of a different drum and dare to make they're dreams come true...


Edited by ARTEMIS1759 on 01-31-19 12:30 PM. Reason for edit: No reason given.

 
4spd409 
"13th Year" Silver Supporting Member
Posts: 599
4spd409
Loc: Sherwood ND
Reg: 10-10-02
01-31-19 02:08 PM - Post#2758681    
    In response to ARTEMIS1759

The s terminal on the starter activates the starter so that won't work. You need to find 12v ignition power for the bat terminal on the hei. You can't use the power wire from your old system as it has a resistor wire and will not provide 12v. Should be able to find a spot on the fuse box. Make sure that it has 12v while you are cranking the motor also. Use a 10 gauge wire. The other terminal on the hei is for a tach.

61 Impala Bubbletop


 
ARTEMIS1759 
Contributor
Posts: 139
ARTEMIS1759
Reg: 04-12-09
01-31-19 02:27 PM - Post#2758682    
    In response to 4spd409

It's been a couple months. Not near my car. Thanks for chiming in. I got mine hooked up right. Like I said I just crossreferrence wiring diagrams..

To those who dance to the beat of a different drum and dare to make they're dreams come true...


 
japete92 
"5th Year" Silver Supporting Member
Posts: 1156
japete92
Loc: No. Virginia
Reg: 01-18-13
02-01-19 06:58 AM - Post#2758733    
    In response to Hourston

  • Hourston Said:
Hey guys about to put a gm big cap style hei in my 59 impala
I have done it before in other cars but the years have past and i cant seem to figure it out for the 59.
I dont know yet if it will even fit with the fire wall clearance.
Any help appreciated




On my '63 there was NOT enough clearance for the large (1 inch more in diameter) cap. I've read that some other '63s do fit. Something to check.

There are 'small cap' distributors w/o points. A separate coil is required. This set up looks very original. It's what I have on my '63 sbc.

Pete



 
ARTEMIS1759 
Contributor
Posts: 139
ARTEMIS1759
Reg: 04-12-09
02-01-19 07:34 AM - Post#2758736    
    In response to japete92

I am going that route because of clearance issues. It works but everything is too close.

To those who dance to the beat of a different drum and dare to make they're dreams come true...


 
DonSSDD 
Silver Supporting Member
Posts: 7012
DonSSDD
Loc: Nova Scotia, Canada
Reg: 08-21-01
02-02-19 09:57 AM - Post#2758821    
    In response to ARTEMIS1759

A stock distributor with pertronics works great.

63 Pontiac Parisienne Sport Coupe(CDN Chev mechanically (409, 4 speed),62 Bel Air SC (sold), 59 El Camino (sold), 62 Bel Air SC(sold), 63 SWC Vette (sold),
Member #2194


 
acardon 
Ultra Senior Member
Posts: 11146
acardon
Loc: DFW TEXAS
Reg: 03-25-05
02-02-19 11:27 AM - Post#2758823    
    In response to Hourston

There is no place on the fuse block that provides switched power during cranking.
Run a larger gauge (at least 12 gauge) wire from the ignition switch directly to the HEI distributor "bat" terminal and splice the tan wire, that was on the switch, into the new wire. Tape back, or remove, the white wire that went to the coil.


Don
66 Corvair (driving)
57 2dr HT (driving)
56 2dr HT (waiting to be restored)


Edited by acardon on 02-02-19 11:33 AM. Reason for edit: No reason given.

 
ARTEMIS1759 
Contributor
Posts: 139
ARTEMIS1759
Reg: 04-12-09
02-02-19 09:52 PM - Post#2758870    
    In response to acardon

That's what I thought. I ran a bigger wire in place of the original coil wire. Thanks for clarifying. Had me questioning how I did it. Lol.

To those who dance to the beat of a different drum and dare to make they're dreams come true...


 
AZRodney 
Poster
Posts: 6

Reg: 05-20-15
03-14-19 10:21 AM - Post#2762068    
    In response to ARTEMIS1759

On mine with a zz4 crate engine I was having some missing at higher RPM it seamed like. So I also ran a an 8 ga wire from the battery back to the starter switch and 10 ga to the HEI. Seams like everything in the car originally was fed off a 12 ga wire from the battery and from what I read was most people suggested 12 or 10 ga to the HEI. I also cleaned up a bunch of wiring and added some additional grounds so not sure what actually helped but it is running much better now.



 
Ecklers AutoMotive
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