Posted By: roy2345
323 gear - 12/18/09 02:44 AM
Changed out my rear end chunk 2day. from a 2.76 to a 3.23. I notice that the speedometer is off. How can this be corrected? it says 70mph but cars are flying by me. So I cant be going 70. 
323 gear
Posted By: stumpy
Re: 323 gear - 12/18/09 02:46 AM
Posted By: 340SHORTY
Re: 323 gear - 12/18/09 02:47 AM
look in the archives. there is a speedo gear 
chart
chart
Posted By: pushbutton
Re: 323 gear - 12/18/09 02:49 AM
Change the speedo gear in the trans. The older small gears are not repoed as far as I know. What year car or trans?
Posted By: joedust451
Re: 323 gear - 12/18/09 05:26 AM
Quote:
Changed out my rear end chunk 2day. from a 2.76 to a 3.23. I notice that the speedometer is off. How can this be corrected? it says 70mph but cars are flying by me. So I cant be going 70.
Hey, did you noticed a nice improvement with the change?
Posted By: scratchnfotraction
Re: 323 gear - 12/18/09 11:47 AM
yep.should be a nice seat of the pants diff with the gear swap
the plastic gear in the tail shaft of tranz were the speedo cable hooks up needs swaped out
the have # of teeth on gear and is clocked in the tail saft acording to how many teeth
the plug the gear rides in has diff #s to clock with the mark on the tail shaft for correct alinement
yes the chart will tell you what gear is needed and is easy to swap out
well do you like the 3.23s in there now?
the plastic gear in the tail shaft of tranz were the speedo cable hooks up needs swaped out
the have # of teeth on gear and is clocked in the tail saft acording to how many teeth
the plug the gear rides in has diff #s to clock with the mark on the tail shaft for correct alinement
yes the chart will tell you what gear is needed and is easy to swap out
well do you like the 3.23s in there now?
Posted By: roy2345
Re: 323 gear - 12/18/09 03:58 PM
ok...there is a difference in the take off for sure. However, I thought I would be able to just smoke the [Edited by Moparts - Family Friendly Site - Keep it clean] off my tires. That's not the case. Yes I have the 440 and 727 tranny. But my exaust is 2 inch pipe. I'm changing my exaust after Christmas and then I'll know the real deal. It's a stock engine from a 70 Chrysler New Yorker. But It responds so much better.
Posted By: JonC
Re: 323 gear - 12/18/09 04:07 PM
What vehicle do you have it in?
Posted By: roy2345
Re: 323 gear - 12/18/09 04:11 PM
a 70 plymouth Satellite GTX Clone.
![Attached picture 5675338-IMG00026[1].jpg](https://board.moparts.org/ubbthreads/upload2/5675338-IMG00026[1].jpg "5675338-IMG00026[1].jpg")
Posted By: Pentastar440
Re: 323 gear - 12/18/09 04:12 PM
A 440 even with the 2.76 should smoke the tires. 
Posted By: roy2345
Re: 323 gear - 12/18/09 04:14 PM
2.76 gear should smokem? I believe my exaust is too restrictive.
Posted By: Pentastar440
Re: 323 gear - 12/18/09 04:24 PM
What kind of car is this in ? The 2" exhaust is not ideal but a 440 should smoke street tires even with a high geared rear. Does your engine run 'strong' or does it bog ? You may have problems with your timing or carb setup. I don't think the gear is your problem.
Posted By: roy2345
Re: 323 gear - 12/18/09 04:28 PM
i just got the timing adjusted yday again. Adjusted to factory specs and no pinging. Carb is a rebuilt Holley 750 dual line.It runs strong I guess. I've never driven anything with a 440 to compare too. I'm putting a cam,timing chain and lifters in it next month if the cam bearings are ok..ADVICE?
Posted By: buildanother
Re: 323 gear - 12/18/09 04:29 PM
If you swapped to a wild cam and left stock converter in it, it could be a dog out of the hole. 
Posted By: roy2345
Re: 323 gear - 12/18/09 04:33 PM
I think I need a Cam in that bad boy..Cheep fix for now..I'll do a total rebuild next year.
Posted By: roy2345
Re: 323 gear - 12/18/09 04:44 PM
So do I need to put in a Cam. The engine is a non HP 440.
Posted By: Pentastar440
Re: 323 gear - 12/18/09 04:46 PM
A stock engine out of a '70 New Yorker should be able to pull a tree out of the ground in low gear. I would work with the timing curve and the carb before I made too many changes. If your timing chain is badly worn, then it could be part of your timing problem ? It looks like you have a nice car to work with. Don't go too wild with you new cam or it will kill your bottom end without gears/converter.
Posted By: roy2345
Re: 323 gear - 12/18/09 04:51 PM
ok...how about a mild cam, lifters and timing chain and gear?
Posted By: Pentastar440
Re: 323 gear - 12/18/09 04:57 PM
Quote:
So do I need to put in a Cam. The engine is a non HP 440.
Just to add.... Your current cam is not your problem , and there is nothing special about an HP. So don't worry that yours is not an HP. I still think that you may have a problem somewhere in timing/carb or possibly a badly worn timing chain (that you said your are changing).
Posted By: roy2345
Re: 323 gear - 12/18/09 04:59 PM
ok....does the timing chain effects oil pressure?
Posted By: Pentastar440
Re: 323 gear - 12/18/09 05:01 PM
Quote:
ok...how about a mild cam, lifters and timing chain and gear?
That sounds like a good plan to me.
Posted By: Pentastar440
Re: 323 gear - 12/18/09 05:09 PM
Quote:
ok....does the timing chain effects oil pressure?
The answer is no. However, your cam bearings, mains, oil pump, etc. can affect your oil pressure. A cheap oil filter could also affect your oil pressure.
Posted By: roy2345
Re: 323 gear - 12/18/09 08:50 PM
ok I have a Fram Filter on it now. I'm changing the old tomorrow. Oil Filter recommendations?
Posted By: stumpy
Re: 323 gear - 12/18/09 09:00 PM
Wix.
Posted By: roy2345
Re: 323 gear - 12/18/09 09:05 PM
Thanks for all you guys help. Getting oil changed and tweaking my timing...
Posted By: Pentastar440
Re: 323 gear - 12/18/09 11:42 PM
Quote:
ok I have a Fram Filter on it now. I'm changing the old tomorrow. Oil Filter recommendations?
Ditch the Fram , try something like NAPA Gold .
Posted By: joedust451
Re: 323 gear - 12/19/09 07:46 AM
I had a 69 New Yorker beater that i drove for about a year untill i pulled the drivetrain to put in a 67 Coronet, it had 2.76 gears & was bone stock with single exhaust, at 4000 ft. Alt. it would fry the "tire", when i made a trip to 2700 ft. it was a total 'monster", this car had 87000 & a wooped timing chain & point ignition, so if your haveing problems frying those street tires in a B body, something is not right or the tires are VERY good, this may not be a good compareason, but i just put together a 360 magnum with bolt-ons in my 71 dart, it has 2.76 gears, all i can say is trying to "not" fry the tire is a challenge to say the least, i can't even get into the secondaries at 30 MPH without the speedo jumping to 50-55 & a wall of smoke lol.
Posted By: MoparforLife
Re: 323 gear - 12/19/09 01:06 PM
Quote:
ok....does the timing chain effects oil pressure?
No - it will not effect oil pressure
Very seldom do the cam bearings need replacement unless the block is cooked out for thorough cleaning and major rebuild.
Posted By: roy2345
Re: 323 gear - 12/19/09 06:39 PM
i just went out today and ran her hard. I moved the timing a little and put some premium gas in her. It flew like a rocket. Smoking tires and all. I also adjusted my kickdown on the tranny. She has woke up! I hit 150mph and the speedo came around to the counter numbers on the speedo. Since I still have the speedo gear from the 2.76 gear I know that reading of 150 mph+ is not accurate. More like 145-150 mph. 
Posted By: stumpy
Re: 323 gear - 12/19/09 06:42 PM
More like 120-125. 
Posted By: roy2345
Re: 323 gear - 12/19/09 06:47 PM
lol.....not even 130? You just broke my heart 
Posted By: stumpy
Re: 323 gear - 12/19/09 06:48 PM
Maybe. try playing witth this. http://vexer.com/68rt/speed.html
Posted By: SomeCarGuy
Re: 323 gear - 12/19/09 07:15 PM
Exhaust will help but won't net much if you have as tock lo po engine.
It likely could use a new chain and that would make a noticeable difference right there. Did the timing bounce around while you were setting it?
If you want a little more cam, you can switch to a grind closer to HP grind and you can get away w/o changing the convertor. Might free up a little power but won't be all that much.
NEVER run a Fram filter on a BB Mopar. Those are junk on anything but REALLY bad on the BB Mopar as the filter sits horizontal and the Fram lets the oil drain back. Wix is good and you can get them at Napa and CarQuest although they will be labled house brand.
It likely could use a new chain and that would make a noticeable difference right there. Did the timing bounce around while you were setting it?
If you want a little more cam, you can switch to a grind closer to HP grind and you can get away w/o changing the convertor. Might free up a little power but won't be all that much.
NEVER run a Fram filter on a BB Mopar. Those are junk on anything but REALLY bad on the BB Mopar as the filter sits horizontal and the Fram lets the oil drain back. Wix is good and you can get them at Napa and CarQuest although they will be labled house brand.
Posted By: joedust451
Re: 323 gear - 12/19/09 09:02 PM
Quote:
i just went out today and ran her hard. I moved the timing a little and put some premium gas in her. It flew like a rocket. Smoking tires and all. I also adjusted my kickdown on the tranny. She has woke up! I hit 150mph and the speedo came around to the counter numbers on the speedo. Since I still have the speedo gear from the 2.76 gear I know that reading of 150 mph+ is not accurate. More like 145-150 mph.
I'd have to guess you didn't break the 120 mark, maybe 110-115 tops, but either way it runs better now & your happy with it, if it feels good, i'd just drop in a new chain/sprockets & call it done internally, just add bolt-ons like a good aluminum intake & a set of headers (if you don't have these), put a good tune on it with good timing curve, in all honesty, it'll respond much better with these things then installing a mild cam & the headaches that go along with it, if you ever do decide to change cams, step it up abit over the HP grind, then get some more gear & a converter that matches, you'll be quite satified.
Posted By: roy2345
Re: 323 gear - 12/19/09 09:13 PM
I checked the formula and I was only doing 125-130 mph. But I'm happy with that because it was wanting more but I was scared of meeting a cop.
Posted By: roy2345
Re: 323 gear - 12/19/09 09:21 PM
what gain will it be to add the lifters and chain but no cam?
Posted By: Pacnorthcuda
Re: 323 gear - 12/19/09 09:25 PM
Quote:
what gain will it be to add the lifters and chain but no cam?
I new chain will only fix whatever timing chain stretch (and nylon cam sprocket issues) may be present. Stretch retards the cam.
If I were you I would put a MILD performance cam in there while I was at it.
Posted By: roy2345
Re: 323 gear - 12/19/09 11:22 PM
ok....Any more sugguestions?
Posted By: roy2345
Re: 323 gear - 12/22/09 03:08 AM
what lets you know if the torque converter is bad in your Tranny?
Posted By: stumpy
Re: 323 gear - 12/22/09 04:10 AM
Basically the motor revs up and you don't go anywhere because the tran will be full on scrap metal.
Posted By: Von
Re: 323 gear - 12/22/09 04:16 AM
[quote you'll be quite satified.
Yeah, if you send my carb parts from 2 plus years ago back to me.............................
Yeah, if you send my carb parts from 2 plus years ago back to me.............................
Posted By: patrick
Re: 323 gear - 12/22/09 12:39 PM
Quote:Quote:
ok I have a Fram Filter on it now. I'm changing the old tomorrow. Oil Filter recommendations?
Ditch the Fram , try something like NAPA Gold .
which are a rebranded wix....same with the carquest premiums. Purolators are also good filters, and the cheaper carquest, and I think the napa silvers are purolators.
if you want to up the cam a bit, I'd look at a comp XE268 or a lunati voodoo 60302 for your stock converter and tall gears. you'll need to change the valve springs to comp 916's.
as far as the speedo, multiply the indicated by 2.76/3.23, or .85 to get acutal speed. if your speedo was accurate with the 2.76's, an indicated 150=128 mph with the new gears.
Posted By: roy2345
Re: 323 gear - 12/24/09 05:14 AM
there is a roaring in the rear end at coast or whenever you don't press the gas. The guy that build the rear end said it can be adjusted and take it easy til he can get to it. It's a 742 case. What did he do wrong? Just curious
Posted By: unclemike
Re: 323 gear - 12/24/09 05:33 AM
Sounds like a bad pinion bearing.
2" inch exhaust?
Who put that on?
If it was a shop that uses a shoe bender the curves are way less than 2" cross section. Check Jeg, Summit, TTI and others for a decent mandrel bent system. Go for 2.5" unless you want to terrify the ricers, then look at the 3" systems out there.
Having had a 350 hp New Yorker 440 in a 1964 Savoy and a 365 hp in a 1968 GTX I can say there is a world of difference between the two as far as power output goes.
2" inch exhaust?
Who put that on?
If it was a shop that uses a shoe bender the curves are way less than 2" cross section. Check Jeg, Summit, TTI and others for a decent mandrel bent system. Go for 2.5" unless you want to terrify the ricers, then look at the 3" systems out there.
Having had a 350 hp New Yorker 440 in a 1964 Savoy and a 365 hp in a 1968 GTX I can say there is a world of difference between the two as far as power output goes.
Posted By: roy2345
Re: 323 gear - 12/25/09 01:33 AM
OK will this tear up while driving?
Posted By: stumpy
Re: 323 gear - 12/25/09 01:40 AM
If it is the pinion bearing it will tear up the rearend when it goes. Bad news. Best bet is to put the rear up on jack stands and yry to move the rear end yoke upp and down by hand. If it moves it's bad. You can also turn the driveshaft with the trans in neutral to see if you feel any grinding at the yoke. Then if you're still not sure you can run the car in gear and listen at the axle housing.
Posted By: roy2345
Re: 323 gear - 12/25/09 01:45 AM
how could that be bad when it was rebuilt with new bearings and seals? Curious
Posted By: stumpy
Re: 323 gear - 12/25/09 01:49 AM
Maybe it wasn't put together correctly. It does happen.