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pater - 27 Aug 2006 02:01 GMT

What year did GM switch from points to HEI. Was the first year for HEI
73 or 74

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Nate Nagel - 27 Aug 2006 02:39 GMT

> What year did GM switch from points to HEI. Was the first year for HEI
> 73 or 74

Not sure about passenger cars, but a '73 pickup still had the "window"
distributor with points.

nate

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Steve W. - 27 Aug 2006 03:25 GMT

>> What year did GM switch from points to HEI. Was the first year for HEI
>> 73 or 74
[quoted text clipped - 3 lines]
>
> nate

late 74 on some models. 75 across the board.

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Steve W.
Near Cooperstown, New York

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ray - 27 Aug 2006 16:00 GMT

>>> What year did GM switch from points to HEI. Was the first year for HEI
>>> 73 or 74
[quoted text clipped - 5 lines]
>>
> late 74 on some models. 75 across the board.

There was also a breakerless non-HEI offered from 71-73 on some pontiacs
called Unitized...
http://www.highperformancepontiac.com/tech/0304pon_pontiac_ignition_option/

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Kruse - 27 Aug 2006 03:26 GMT

> What year did GM switch from points to HEI. Was the first year for HEI
> 73 or 74

If my memory hasn't completely failed me, Cadillac had the first HEI in
'74, and the other GM makes had it in 75. It's possible Cadillac had a
few HEI units in 73. Maybe my CRS syndrome has failed me......

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pater - 27 Aug 2006 14:46 GMT

Thanks ,bought an old truck with a pontiac motor & it has a breaker
point dist in it. Looks like an older restoration with a Nova (or
probably ventura) subframe welded in at the front. Traced the engine
code to narrow it down to a '73 400 or a '74 455 all other engines
using a Y4 code are 76 & 77, so providing the dist is OE, I've narrowed
it to 2 choices. Will check the rest of the #'s to figure it out,
Thanks again for the input.

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