HEI low profile distributor crab cap, remote coil by MaxCubes
Started on : 12-15-2018 09:44 PM
Replies : 25 (692 views)
Last post by : MaxCubes on 01-11-2019 06:12 PM
Dec 15th, 2018
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
In response to PM's regarding the old thread of fabricating a low profile cap for HEI distributor for various GM V8's
...photos from old thread not viewable, sorry.... Will use Pennock's PIP on this one
09:44 PM
PFF
System Bot
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Start with a distributor cap from a 1976 Chevy C10 with the 250 inline six engine...
09:48 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Cut the top off like shown...
09:50 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
09:51 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
You'll need to trim off these ribs (red arrows)
09:54 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
You may need to open it up a little more with a hand file so that you can insert the top half into the lower half... You want it to fit snuggly, but not too tight
09:57 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
File the rough cut with a course but flat surface... a cinder block works good!
09:59 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Get a distributor cap from a 1997 chevy pickup with 5.7 vortec engine, and cut it shorter like shown...
10:02 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
10:05 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Need to trim these ribs so you can insert the vortec half into the lower half..
10:08 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Get a rotor from same 1976 Chevy 250 motor..... you do not need to modify it
10:23 PM
PFF
System Bot
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
Before you glue anything... install the 76 rotor to a loose distributor and install your new low profile cap to the distributor. Spin the distributor with your hand to make sure your rotor is not getting stuck or hitting anything.. if it hits, you need to sand the upper vortec cap shorter and/or you have the top part pushed too deep in the lower part
10:25 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
The hold down hooks need to be centered between the inner brass terminals... the square alignment tooth (green arrow) needs to be positioned as shown in relation to the upper vortec cap
10:27 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
You see the little rib that the red arrow is pointing to?... the cap must be oriented like this
Also... this screw must be dead center between the coil post and number 6 post
10:30 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
I've noticed JB black plastic weld comes out the nicest... other glue brands look lumpy
10:34 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
10:36 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
These are instructions and diagrams I printed to customers back when I was selling these on eBay...
wiring if you want to use a vortec coil...
Wiring for a conventional coil...
For this coil, you would need to cut and crimp a different boot and terminal on the coil wire
10:41 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
These are distributor cap firing orders depending on which engine you install this cap on
This is how the rotor is supposed to be pointing when you install the distributor.... make sure the engine is at TDC with cylinder number one at beginning of power stroke
10:44 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
10:45 PM
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
10:48 PM
Jan 6th, 2019
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
.... By the way does anyone know where one can purchase a transparent vortec distributor cap ?
06:02 PM
PFF
System Bot
Jan 8th, 2019
wgpierce Member Posts: 376 From: Australia Registered: Aug 2016
Wow!
08:09 PM
Jan 9th, 2019
Neils88 Member Posts: 4045 From: Jeddore,Nova Scotia Registered: Aug 2013
Blacktree Member Posts: 20770 From: Central Florida Registered: Dec 2001
This needs to go in the How-To section.
11:41 AM
Jan 10th, 2019
Spadesluck Member Posts: 2069 From: Georgia Registered: Jul 2016
Very awesome. I assume here this is primarily for aesthetics?
02:30 PM
Jan 11th, 2019
MaxCubes Member Posts: 693 From: El Paso, TX Registered: Aug 2004
quote Originally posted by Spadesluck: Very awesome. I assume here this is primarily for aesthetics?
That or one may need clearance, like a supercharger, air filter, etc
06:12 PM