440 Block Question

Old Nov 29, 2007 | 02:02 PM
  #2  
440roadrunner's Avatar
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I'm not familiar with 440 casting no's but remember that model years used to be introduced pretty early, or even late in the previous year, so I would not find a date late in '65 to be "very early", It simply would have been in a car made for the 66-67 model year. so far as heads, I cannot find the casting no with a Google search, but the '66-67 heads were an "odd" year and were considered "very good."

Remember that '68 was the big year federally for smog engines, and by then the Chivvies all had smog pumps. I think that was the reason that the "good" 66-67 heads were only used on those years. Seems to me the casting no. for the "good" 66-67 heads were 90x something, 906, 907? I wish someone could find out and post, it's been a LONG time for me.

As old as all those cars and engines are by now, ANYTHING could have happened over the years.


HMMMMM here's a page, and they claim that those heads were 915. I don't remember that they were every used on 383's, as shown here:

http://www.mymopar.com/headcastnumb.htm


This page shows the 915 heads -- and I'm sure those are the ones I'm thinking of, only being used on '67 440's. I THOUGHT they were used in '66, too, but maybe not

http://cowtownmopars.com/CastingNumbers.html


Google 440, heads, "casting numbers"
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Old Jul 20, 2010 | 12:32 PM
  #4  
mats's Avatar
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Unhappy overheating 440 TNT Chrysler 300-68

Hi, I just recently ended a 1.5 hour drive / that took 5 hours!!!) as my -68 300 that I just purchased started running hot! The car is a mint condition -68 chrysler 300 with a 440 TNT. Yesterday I took it for a test ride and everything turned out ok, went back to the seller today and took it for another spin and everything was just sweet. After the purchase was done I was heading home cruising at roughly 65mph, when the red "hot" lamp came on!!! ( after ca 31 miles..)

Ok, I stopped, checked, no leaks, filled up with water and continued for another 25 miles when I had to stop again.. this was repeated 4 times before I made it home.

Car has probably sitting still for 1- 3 years, and the oil cooler for the transmisson is huge and is just in front of the radiator.. could this be blocking air flow?

Any help to a new mopar guy is greatly appreciated,

nice greeting from Sweden!

Mats,
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Old Jul 20, 2010 | 04:01 PM
  #5  
67 GTX's Avatar
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From: Brooklyn, N.Y.
if you had to constantly refill the radiator, there is a leak somewhere
how do the hoses look?
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