points (old school) vs. HEI (new school) - Pontiac GTO Forum
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post #1 of 17 (permalink) Old 10-13-2009, 08:18 PM Thread Starter
 
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points (old school) vs. HEI (new school)

I just bought a 66 GTO Tripower, factory A/C, power brakes, steering, etc. I am working through the engine/ exhaust issues to bring it back to a more original look, better running vehicle. I plan on driving it at least weekly. One question- go old school (which I am) with points, etc. or change to a more modern ignition system (which I drive everyday in my truck)? I don't want visible changes under the hood, but more reliable, and less maintenance concerns are on the HEI's side. I understand I can get an HEI system that should pretty much drop in as a replacement for the current distributor. Any expert opinions out there?
thanks much.
Bill
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post #2 of 17 (permalink) Old 10-13-2009, 09:42 PM
 
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Well, by no means an expert, but if you drop in an hei distributor you will change the stock appearance even using a small body one. Maybe go with a Pertronix or similiar manufacturer that converts the points to electronic using the stock distributor under the stock cap; that way it will appear factory correct but with less maintenance of the points setup.

Congrats on the new score BTW.
Mike
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post #3 of 17 (permalink) Old 10-13-2009, 10:03 PM
 
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I'm thinking of going to the petronix unit myself. find 68greengoat for his experience with it, he just put one in. bear in mind you'll need a coil with a bit more juice.
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post #4 of 17 (permalink) Old 10-14-2009, 07:02 AM
 
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The wide HEI distributors don't all clear the rear part of the trip/carb set up.....Personally, I would convert the system I have. Or stay with the points set-up.....Eric



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post #5 of 17 (permalink) Old 10-14-2009, 07:23 AM
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HEI will not fit a tri-power intake. I would keep the points and run an MSD unit. You will keep the stock look but have all the benifits of an electronic ignition. You can even hide the MSD unit so only you will know it's there.
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post #6 of 17 (permalink) Old 10-14-2009, 08:50 AM
 
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what's the advantage of MSD over the petronix unit? I'm a big fan of the simple plug and play nature of the petronix. I should really replace my coil anyway given it's 42 years old and probably operating at about 20%
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post #7 of 17 (permalink) Old 10-14-2009, 09:01 AM
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An MSD unit will give you Multipul Spark Discharge, or more then one spark per power stroke. It also gives a hotter spark making more power, easer starts, better mpg, etc.
It also changes the way the points are treated. In a conventional system 12v are sent through the coil and the points ground out that currcut and that causes the points to burn and wear.
The MSD unit only moniters resistance through the points much like a multi meter so it removes all the voltage from the points, no voltage, no burning, no wear making them last forever.
Some MSD units have RPM limiters too so you can set the max RPMs, which is sweet incase you spit out a driveshaft or whatever, it keeps the motor from gernading.
If you hide the main MSD unit your engine will look bone stock. I tell people I have one with the hood open and no-one can find it.
Every muscle car could benifit from an MSD.
EVERY person I've installed one for has been more then happy with them.
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post #8 of 17 (permalink) Old 10-14-2009, 09:14 AM
 
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I've been using the Petronix unit in my 62 Corvette for over 5 years. it's fantastic. I put one in my 65 GTO as well. Put in a black coil with "more juice" and you can't tell (externally) that the points (and related maintenance) were eliminated.

Hal
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post #9 of 17 (permalink) Old 10-14-2009, 09:56 AM
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I changed the points on both of my classics to the Crane Cams Electronic Conversion kit, without points you can remove the ballast resistor and/or the ballast coil wire and feed a full 13.8 volts to the coil. This unit also has an adjustable rev limiter.

Randy


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post #10 of 17 (permalink) Old 10-14-2009, 10:33 AM
 
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Rukee, the petronix ignitor III has an RPM limiter and multispark capabilites. Without points there's no need for concern. It also doesn't require any camoflage/stealth methods and costs $75 less. MSD may be a great unit, but it seems like there's a new kid in town.
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