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  #1  
Old 10-29-2007, 11:21 PM
it's all dodge it's all dodge is offline
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unless I'm getting forgetfull, the numbers 489, 741, or 742 should be on the bottom lefthand side of the gear carrier housing, yet this one from my 68 Newport parts car says nothing there, but I do see the numbers 2467 199, somewhere else, and it looks different from the other 741,742, and 489s I have, beefed up maybe, what is the pinion size?
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Old 10-29-2007, 11:27 PM
Jack_440 Savoy Jack_440 Savoy is offline
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My Guess is that it's a 742 Does it have a Big # 2 0n the side ??? I have some info put away , I'll try to find it .
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Old 10-29-2007, 11:31 PM
Jack_440 Savoy Jack_440 Savoy is offline
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Have a look at this , May help http://www.bigblockdart.com/techpages/875axle.shtml
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  #4  
Old 10-30-2007, 12:00 AM
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dave571 dave571 is offline
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It's my understanding that if it it doesn't have the usual numbers it's an earlier version, and is essentially a 741.

Whether that's true or not is anyones guess.
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Old 10-30-2007, 12:01 AM
it's all dodge it's all dodge is offline
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I'll have to wipe more grease/gunk off. Definitly beefier looking than my 742, I need to buy a camara!
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Old 10-30-2007, 12:06 AM
Shaun Shaun is offline
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A stock 68 Newport would have a 742.
It would be on the driver side,a big X(741,2-742,or 9-489).
Your numbers don't match with the 8 3/4 numbers at all.
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Old 10-30-2007, 12:06 AM
it's all dodge it's all dodge is offline
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after looking at bigblock dart, says 742s woulda been in the heavier cars I think, this thing has gotta weigh (used to weigh before I got ahold of it) 4000 pounds, had a 383-2 barrell
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Old 10-30-2007, 12:08 AM
it's all dodge it's all dodge is offline
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no numbers where they usually are, those numbers are at the top of the third member
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Old 10-30-2007, 12:09 AM
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ehostler ehostler is offline
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If it is factory original and it is an 8 3/4, it should be a 742.

Definitely clean off the grease and see if the numbers are just hiding under the muck.
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Old 10-30-2007, 12:11 AM
Jack_440 Savoy Jack_440 Savoy is offline
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Maybe the Grease/Gunk are making it look beefier LOL What engine was it the car . They usally put a 741 with a lower Horse power car
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Old 10-30-2007, 12:11 AM
Shaun Shaun is offline
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Quote:
Originally Posted by dave571 View Post
It's my understanding that if it it doesn't have the usual numbers it's an earlier version, and is essentially a 741.

Whether that's true or not is anyones guess.
It's not a guess. There were early 741s and early 742's,meaning a 742 without a big 2 and a different casting number,but with an inch and 3/4 pinion, cast number 1634985 and the little 'un was the 1820657. The change in casting numbers happened before 60 for the 741 and after 60 for the 742. The date code was on the ring gear.But...they were the same,beside the tapered axles.
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  #12  
Old 10-30-2007, 01:13 AM
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dave571 dave571 is offline
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I'm questioning whether this is a 742, simply because my 68 newport had a 742, and it was clearly marked as such.

Now it doesn't have a 742, because my 330 does.

After 40 years, the chances of the 742 being swapped out somewhere is at least as good, as it not being swapped out.
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