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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: DPelletier]
#1074672
09/14/11 04:04 PM
09/14/11 04:04 PM
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Joined: Jan 2003
Posts: 1,607
Western Washington
Sixgun
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,607
Western Washington
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I personally have 2 '489 carriers out of big cars (Cs)2.76 sure grip.Never seen a 2.41, but my ex GFs LeBaron had 2.20s in the 8&1/4.  P.S A-12, Nice Pic.
Last edited by Sixgun; 09/14/11 04:06 PM.
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: jcc]
#1074676
09/14/11 06:03 PM
09/14/11 06:03 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
If I saw one, I likely would buy it, and a 3.08 to boot. 
So wood I ....
And to patrick .... ONLY to me ...and Double D ... 
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: 1_WILD_RT]
#1074678
09/15/11 12:00 AM
09/15/11 12:00 AM
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Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
Never argue with a fool - they will drag you down to their level, then beat you with experience.
GREAT! I love it!
Another favorite: "I'd agree with you, but then we'd BOTH be wrong!"
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: Chi_Town_Runner]
#1074679
09/15/11 12:43 AM
09/15/11 12:43 AM
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Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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Quote:
Quote:
Maybe slightly interesting, how many note that only odd tooth counts are used on gears and why?
Not always odd count for both:
3:23
42 teeth ring
13 teeth pinion
4:57
32 teeth ring
7 teeth pinion
4:86
34 teeth ring
7 teeth pinion
As was explained to me once by an engineer:
The reason for having ratios that are in the decimals is that with each revolution a single tooth on the pinion will not contact the same tooth on the ring with every revolution.
The pinion tooth advances one tooth per revolution so that it will contact each tooth on the ring gear through numerous revolutions.
Hope I explained that correctly.
Frank 
Find another engineer.
There are repeating and non repeating patterns, not to mention the one tooth theory is wrong. I'm going to use Ford 9" ratios, since they are the most common.
A 3.00 is a common pickup gear and has a 13/39 tooth count. Each pinion tooth hits the same 3 teeth on the ring and is a repeating pattern. A 3.50 ratio has 10/35 and each pinion tooth hits the same 7 teeth during 2 rev's and is (semi) repeating.
As to the "one tooth" theory. A 3.08 ratio has 13/40 teeth and each pinion tooth is one tooth off, so after 3 pinion rev's it has went 39 teeth and is one tooth off the 40th tooth. A 3.23 ratio is 13/42 - again, after 3 rev's has went 39 teeth, but it is 3 teeth away. A 3.55 has 11/39 so 3 turns, 33 teeth, 6 off. Follow? 
Free advice and worth every penny...
Factory trained Slinky rewinder.........
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: WILD BILL]
#1074680
09/15/11 12:45 AM
09/15/11 12:45 AM
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Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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A high gear is for high speed plain and simple and a low gear is for low speed. Doc needs to lay off the crack pipe. I supose you start your transmission out in high gear and work your way to low gear when your really goin fast 
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: Evil Spirit]
#1074682
09/15/11 02:34 AM
09/15/11 02:34 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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... you  s ... lay off the  .... The transmission inner gearing is way diff than the final drive rear-end ratio. PLUS the resident Xpert here (Doc Diff) labels this whole deal as a 2.76 being a low-ratio BUT IS a high-speed gear. I will accept that ... but you just keep "hitting the pipe". Well you can HITit by yurrself. 
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: JohnRR]
#1074683
09/15/11 05:52 AM
09/15/11 05:52 AM
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Joined: Jan 2005
Posts: 4,862
the frozen wastes...
Pale_Roader
OP
Swears too much
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OP
Swears too much
Joined: Jan 2005
Posts: 4,862
the frozen wastes...
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Quote:
All I see is a lot of this ...
*** You are ignoring this user ***
makes the thread a little confusing though ....
Hah! I guess that means you dont have me on that list then. Can you 'ignore' the original posters ov threads? That might get confusing. I dont use that feature, so i dont know how it works.
So yes, i guess i am looking for a 489 or 742 2.76 geared sure grip pig. That 68 Charger in Hotrod years back went 190mph on that pig with a '505HP' 440, so i guess it'll work for what i need. I'd still prefer something higher (numerically lower, for the topically-challenged), but i'm sure the 2.76's will bad hard enough on clutches as it is.
I now return you to your bickering. And for when this finally gets resolved i will say this: long rods make more power....
HAHAHAHAHAHAHAHAHAHAHA (groan... i've been here too long...)
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: A12]
#1074684
09/15/11 07:39 AM
09/15/11 07:39 AM
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Joined: Jan 2003
Posts: 4,664
Newfoundland
mopar_man
master
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master
Joined: Jan 2003
Posts: 4,664
Newfoundland
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Quote:
It's the difference between "drive" and "driven" regardless of the mode of power.......the pinion gear ring is the "driven" gear not the "drive" gear......hence the term "overdrive" (over, above, taller, higher.....)
MikeR
Everything from the flexplate or flywheel back is "driven"
However , we don't use the term in its correct meaning .
we could say the tranny is driven by the crankshaft
the "driveshaft is driven by the tranny
the diff is driven by the driveshaft but it would just complicate things more for the newer crowd that is just learning the mechanics of our automobiles.
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: A12]
#1074685
09/15/11 11:12 AM
09/15/11 11:12 AM
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Joined: Jan 2003
Posts: 10,030
Wisconsin
Aero426
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,030
Wisconsin
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Quote:
Anyone know the ratios they used in super speedway Mopar NASCAR's back in the day? 
Teams had racks of 8 3/4 center sections with different gears ready to go. There were many choices. In the area of 2.76 or 2.94 for Daytona and Talladega. We just switched my car from 3.23 to a 4.75 to make it easier to move around at low speeds because the tire diameter is so large. The 4.75 gear set installed was used in a different car on mile dirt like Springfield and DuQuoin.
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: MoparforLife]
#1074687
09/15/11 02:45 PM
09/15/11 02:45 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Haven't you guys learned to not argue with the Doc? he's not always right, but he'll never admit he was wrong. yes, we all know that EVERYONE EXCEPT the doc, calls a 2.76 gear a "tall gear" and a 3.91 gear a "short gear"
he'll refuse to admit that, and will argue to the death that he's right.
Often times, it's best to let his comments go and ignore them.
I'm actually kind of surprised he hasn't told us about how perfect his car is and will run 12s and get 20 MPG with a 2.76 rear gear and a t-quad, and that the rest of us are all doing something wrong because we can't duplicate what he's doing.
**Photobucket sucks**
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: 70Cuda383]
#1074688
09/15/11 06:08 PM
09/15/11 06:08 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
but he'll never admit he was wrong.
I'm actually kind of surprised he hasn't told us about how perfect his car is and will run 12s and get 20 MPG with a 2.76 rear gear and a t-quad, and that the rest of us are all doing something wrong because we can't duplicate what he's doing.
I am "WRONG" ? .... for calling a gear-ratio that is low numerically a "short gear" ? No ...I will not admit that I am "wrong". But I am BIG ENOUGH to admit I uNderstand the reasoning behind the opposite point-of-view or opinion. But then others here can not offer me the same consideration...
You allege that I have never admitted when I was wrong? ... there have been several instances over-the-years where I have mis-spoke or didn't have my facts right OR had all my ducks in-a-row ...and have admitted same.
And as far as my car ? ... so I like an odd-ball combos. WHO else here specifically sets-out to put-together a SHORT GEAR combo that runs half-way decent. And as far as someone DUPLICATING these efforts? ... I would hope that if anyone here tried ... that they could do-it with no-effort. The motor that was in the car then was a blow-by special.
And Tom ...I never claimed 20 mpg. I said that I would like to eventually put-together a combo that would run 11.99 and get 20 mpg.
Now will you admit when YOU are wrong?
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Re: How rare is a 8 3/4" 2.76 sure grip?
[Re: stumpy]
#1074690
09/15/11 07:10 PM
09/15/11 07:10 PM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
Doc F on this one maybe you should open your eyes and realize that you are on a one way street going the wrong way.
Well stumpy ...when Doc Diff refers to a 2.76 gear as a HIGH SPEED gear and does not refer to it as you do ... and HE is the resident Xpert here on moparts ....WHO is going the wrong-way on that "street" ..? ....
.... 
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