EGR time delay module

[sigmfsk]

74 dodge
outside of California : no EGR time delay
3755800 : 360, 440 std eng w./calif. emission pkg (no pic)
3874010 : 318, 440 h/perf eng. w/ calif. emission pkg




75 & 76 dodge
3874300 : 318, 360, 400, 440:



3874310 : canada 318 (no pic)


The 77 catalog is in a different format than 74-76, so it wasn't immediately obvious what cars used what, although many used 3874300.

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I wondered why a 1974 california 400 wouldn't have an egr time delay module, but I see that a california 400 did not exist (a california car couldn't be selected with a 400 motor):



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from archived info around here:
www.bluesbrotherscentral.com/forum/topic/8176-angle-between-440-dual-snorkels/page__view__findpost__p__121416

[sigmfsk]

Oct 13, 2011 1:42:02 GMT -5 sigmfsk said:

74 dodge
outside of California : no EGR time delay
3755800 : 360, 440 std eng w./calif. emission pkg (no pic)
3874010 : 318, 440 h/perf eng. w/ calif. emission pkg

Here's a pic of the other 1974 EGR time delay module: 3755800:


from
bluesmobiles.proboards.com/index.cgi?action=gotopost&board=sedans&thread=813&post=5487

[sigmfsk]

More info in the SD found mopar video series:

[spanks79]

Absolutely fantastic video and information. Early emission controls systems are so greatly misunderstood, this helps shed some light.

[sigmfsk]

Dec 18, 2013 7:35:23 GMT -5 spanks79 said:

Early emission controls systems are so greatly misunderstood, this helps shed some light.

I can see that. Like when they said: The vacuum valve on the radiator externally looks exactly like the valve from 1973. Except that it works completely opposite (normally closed vs. normally open).

If someone didn't know that, but knew just enough to be dangerous, they'd get everything backwards.

Dec 18, 2013 7:35:23 GMT -5 spanks79 said:

Absolutely fantastic video and information.

I find it interesting to follow the different mindset to see these hardware solutions to various emissions problems (such as delaying distributor advance during certain situations), when today one would just write a few lines of code to do it.

[58hemifury]

Interesting stuff, I work with an older guy who's been a Chrysler tech for almost 40 years I wonder if he remembers all of this.