Sure Grip Rearend Value Question
- Thread starter wes beem
- Start date
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340doc
Well-Known Member
diymirage
HP@idle > hondaHP@redline
, so far ive been very successful about trading chebby parts for mopar parts .
Fixed it for ya
wes beem - dont worry about calling it a "posi", these people all mean well and are really good sources of info. Just dont ever do it again...LOL! If you want a number for a good working "sure grip" unit with 4.10 ratio it will sell $400-450.00 all day long.
But you really need to verify the ratio on the ring gear (stamped in to it) and in the case like jerkyboy showed you. The case has the number we all are looking for cast into the drivers side of the lower pinion area.
The last 3 digits are what most look for. 742, 741 or 489 is the number they are referencing. This will tell pinion size and style.
Is it large yoke or small yoke
Then, what style is the "locking portion" or "posi" as you call it. Some are cone styles and some are clutch styles. I wish I had pictures to show you but if you research there are pictures on Google or even
on here thru search.
When you swap it out, take some photos, especially of the wear pattern on the ring gear. Let us know if there was anything in the oil and how much play there is and the more info the faster it will sell.
Remember shipping isn't free for a heavy unit like that.
Good luck,
Joe
Last edited:
You mean 742, not 721
Got it... Already fixed
MoparMike1974
Well-Known Member
"Do you know how a posi trac works in a hemi??
...it just does. "
3.55 or 3.91 are excellent street gears. I dont think I would go any lower in my cars.
If I was buying the main factor on price would be cone vs clutch sure grip. Im not fond of the cone types at all.
...it just does. "
3.55 or 3.91 are excellent street gears. I dont think I would go any lower in my cars.
If I was buying the main factor on price would be cone vs clutch sure grip. Im not fond of the cone types at all.
famous bob
mopar misfit
I prefer Detroit lockers my self.
you completely butchered that quote.....
the quote from Joe Dirt's Dad was
"How exactly does a posi-trac rear-end on a Plymouth work? It just does."
I was trying to remember that quote all night and just could not get it right.... "whaaaaat?"
sireland67
Well-Known Member
Where are you in OH, I may be interested in it for a reasonable price, it you are not too far away.
Really? What are the Jet-Ski versions used in the water called? Are they SEA DOO ?
Also...Were there ever any 4.11 ratios offered in a Mopar differential? I know it is being picky but I thought the 4.11 was a Ford ratio. GM had 4.10, Mopars had a 4.10 too. Personally, I have never seen a 4.11 in a Mopar.
the condition and cobbled together state every aspect of the car was in very much reflects the lack of knowledge of the guy who "built" this car before i bought it. I got it from a guy who bought it off of his son to settle some debt. All he had to go by was what his son told him, and in turn thats all ive had to go by. This is my first mopar, my first classic car ever actually, so all i can go by is what i was told.
The originals from the late 60's were called Bombardier Sea-Doo's. Not the greatest PWC but for the time they were fun.
I believe "JetSki" is a Kawasaki name for their PWC.
Just call it a limited slip differential and your covered.
My best guess, assuming the following to be true....
All gears in nice, unworn, and undamaged condition
742 or 489 case
Clutch style SG unit
Bearings in good condition
Unit serviceable and install ready
$400 for 3:23 gears
$450-$500 for 3:55 gears
$500-550 for 3:91 gears
$600 for 4:10 gears
Yes, they can be cheaper, and definetly more expensive, but this is a guideline to go by when buying or selling!
Subtract $100 for 741 case
Subtract $100 for cone style SG
Of course, there is no such thing as a 4:10 gearset for 741 case, at least not in today's world, so I would bet it's a 489/cone style SG, which would put the value at around $500
All gears in nice, unworn, and undamaged condition
742 or 489 case
Clutch style SG unit
Bearings in good condition
Unit serviceable and install ready
$400 for 3:23 gears
$450-$500 for 3:55 gears
$500-550 for 3:91 gears
$600 for 4:10 gears
Yes, they can be cheaper, and definetly more expensive, but this is a guideline to go by when buying or selling!
Subtract $100 for 741 case
Subtract $100 for cone style SG
Of course, there is no such thing as a 4:10 gearset for 741 case, at least not in today's world, so I would bet it's a 489/cone style SG, which would put the value at around $500
I just changed the thread title. I hope no one minds. It was bugging me. LOL
It's like calling my Swinger paint color "Bahama Blue"
THANK YOU. This is what i needed to know. I had a guy offering to trade me what i had for some custom upholstry work and i was just trying to make sure the rearend wasnt worth way more than the work quoted in trade. Based on the price spread it sounds like a fair trade to me.
Are you Posi....tivly sure?
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