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Re: What is the last year for LH threads?
[Re: V194]
#2491730
05/03/18 10:36 PM
05/03/18 10:36 PM
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Joined: Feb 2009
Posts: 1,149
NW New Jersey
RSI700VIPER
super stock
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super stock
Joined: Feb 2009
Posts: 1,149
NW New Jersey
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My 70 Cuda with an SPD date of July 30th, one of the last Cuda's built, has left hand threads.
1970 Superbird 440 Six BBL, 4-Speed, Dana, FJ5
1969 Daytona Charger 440 4-Speed, Dana, EV2
1971 340 Challenger Conv. Flemington Speedway Pace Car, FC7
1970 340 Six Pack Callenger T/A 4-speed T8 Tan
1971 340 Challenger RT Formal Roof, EV2 w/ V2 Stripe & Orange Houndstooth
1969 Talladega Torino, 428CJ
1969 Gurney Special Cyclone Spoiler II, 351 Cleveland
"Id rather have a bottle in front of me than a frontal lobotomy" Ben Franklin 1755
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Re: What is the last year for LH threads?
[Re: Rhinodart]
#2493316
05/07/18 06:29 PM
05/07/18 06:29 PM
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Joined: Apr 2003
Posts: 1,331
Clinton, NJ
njmopar
pro stock
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pro stock
Joined: Apr 2003
Posts: 1,331
Clinton, NJ
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What about Dodge? I have had a 71 and 72 Dart with left hand 7/16" lugs.  Wasnt it a-body drums had LH until 73 but disc had RH? I am getting flashbacks about reading this. A parts manual should settle it.
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Re: What is the last year for LH threads?
[Re: njmopar]
#2493324
05/07/18 06:50 PM
05/07/18 06:50 PM
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Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
hemi71x
master
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master
Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
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What about Dodge? I have had a 71 and 72 Dart with left hand 7/16" lugs. Wasnt it a-body drums had LH until 73 but disc had RH? I am getting flashbacks about reading this. A parts manual should settle it. Nope.
RF-4C Phantom 69-370 Zweibrucken, Germany
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Re: What is the last year for LH threads?
[Re: njmopar]
#2493329
05/07/18 07:35 PM
05/07/18 07:35 PM
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Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
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A parts manual should settle it.
It does; read my last post.
The INTERNET, the MISinformation superhighway
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Re: What is the last year for LH threads?
[Re: 340mouse]
#2493386
05/07/18 09:36 PM
05/07/18 09:36 PM
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Joined: Jan 2007
Posts: 7,664
IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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Why LH threads? On serious acceleration the torque on the wheels tends to loosen RH threads on the left side. This is a very slight effect but can lead to loosened lugs if you really hammer it on sticky tires.
Newer cars use higher torque (vs 65 ft lb in the FSM I use for a '70). My '2014 Avenger calls for 90 Ft lb (I think) on studs that are not bigger.
I run aftermarket studs (RH) on my '70 E that originally had LH. I use 75 ft lb on lubed studs. More than original. I also check regularly when I am hammering it.
Last edited by ahy; 05/07/18 09:38 PM.
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Re: What is the last year for LH threads?
[Re: ahy]
#2493679
05/08/18 04:16 PM
05/08/18 04:16 PM
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Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
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I use 75 ft lb on lubed studs. Most newer FSM's that I've seen specifically warn against lubing lug studs.
The INTERNET, the MISinformation superhighway
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Re: What is the last year for LH threads?
[Re: John_Kunkel]
#2493900
05/09/18 11:08 AM
05/09/18 11:08 AM
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Joined: Sep 2003
Posts: 19,408
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,408
north of coder
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I use 75 ft lb on lubed studs. Most newer FSM's that I've seen specifically warn against lubing lug studs. very true. but here in the rust belt, a dab of anti-seize and 80-85lbft keeps the salt spray from galling the threads from rust on the exposed threads under the hubcap[s]. no problems with wheels loosening in over 40+ years doing this. 
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Re: What is the last year for LH threads?
[Re: V194]
#2493935
05/09/18 01:25 PM
05/09/18 01:25 PM
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Joined: Jan 2004
Posts: 4,566
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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I own (4) 1970's (2) are RH thread & (2) are left hand threads. It does make me think before I hit the impact gun of which car has which threads. So to answer the O.P. question I believe it was a mid 1970 change over.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: What is the last year for LH threads?
[Re: njmopar]
#2493953
05/09/18 02:14 PM
05/09/18 02:14 PM
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Joined: Jan 2003
Posts: 43,553
Round Lake Beach, Illinoisy
Rhinodart
Rhinotruck
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Rhinotruck
Joined: Jan 2003
Posts: 43,553
Round Lake Beach, Illinoisy
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What about Dodge? I have had a 71 and 72 Dart with left hand 7/16" lugs. Wasnt it a-body drums had LH until 73 but disc had RH? I am getting flashbacks about reading this. A parts manual should settle it. Once again nobody here or anywhere else can say for certain when Chrysler did something, it has bitten us all before. What is solid for a B or E-Body is not for an A-Body and visa-versa. 
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: What is the last year for LH threads?
[Re: hemi71x]
#2494033
05/09/18 05:09 PM
05/09/18 05:09 PM
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Joined: Jan 2003
Posts: 43,553
Round Lake Beach, Illinoisy
Rhinodart
Rhinotruck
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Rhinotruck
Joined: Jan 2003
Posts: 43,553
Round Lake Beach, Illinoisy
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No is isn't, I have personally had a 72 Demon with left hand threads, NEVER been altered, so you believe what you want and I will rely on my 40 years of owning and restoring A-Body's.
Last edited by Rhinodart; 05/09/18 05:13 PM.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: What is the last year for LH threads?
[Re: Rhinodart]
#2494101
05/09/18 08:21 PM
05/09/18 08:21 PM
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Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
hemi71x
master
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master
Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
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No is isn't, I have personally had a 72 Demon with left hand threads, NEVER been altered, so you believe what you want and I will rely on my 40 years of owning and restoring A-Body's. You the original owner of the car? You haven't got a clew as to the original history of that vehicle when it got off the transporter truck at the original dealership, back in the day. And i will rely on my ownership of a Mopar automobile since i factory ordered one new, back in 71, and being an auto mechanic for 30 years when i was a healthy human being.
RF-4C Phantom 69-370 Zweibrucken, Germany
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Re: What is the last year for LH threads?
[Re: Rhinodart]
#2494336
05/10/18 12:00 PM
05/10/18 12:00 PM
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Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
hemi71x
master
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master
Joined: Jan 2003
Posts: 5,357
Rancho Cordova, California (Sa...
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Hey Rhino, you sure danced around the reply in not answering the question in regards to knowing the mechanical history of a 72 automobile since it left the factory, since you didn't purchase it new.
Lots could have been done, replaced, on it early in it's life that you don't have a clue.
And John K. posted an August 1970 TSB stating when Lefties weren't to be used anymore, not two years later on a 1972 automobile like you say.
I might concede to you a 1971 automobile build during the first days of production, could have sneaked thru on the assembly line, but not a 72, two years later.
RF-4C Phantom 69-370 Zweibrucken, Germany
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Re: What is the last year for LH threads?
[Re: hemi71x]
#2494418
05/10/18 03:37 PM
05/10/18 03:37 PM
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Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,808
Rio Linda, CA
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Bottom line, unless you sat in the car as it was transported from the factory and it never left your sight after that, you have no way of knowing what's been done to the car.
Anybody who's worked in a dealer can testify to how often parts are robbed from new cars on the lot to satisfy parts room shortages and then later replaced with what ever was at hand.
The INTERNET, the MISinformation superhighway
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Re: What is the last year for LH threads?
[Re: hemi71x]
#2494430
05/10/18 04:17 PM
05/10/18 04:17 PM
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Joined: Jan 2003
Posts: 10,719
North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,719
North Dakota
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Hey Rhino, you sure danced around the reply in not answering the question in regards to knowing the mechanical history of a 72 automobile since it left the factory, since you didn't purchase it new.
Lots could have been done, replaced, on it early in it's life that you don't have a clue.
And John K. posted an August 1970 TSB stating when Lefties weren't to be used anymore, not two years later on a 1972 automobile like you say.
I might concede to you a 1971 automobile build during the first days of production, could have sneaked thru on the assembly line, but not a 72, two years later. Hmm. I have to side with Rhinodart on this one. To think that someone would take a car with all right hand lugs and swap out both the front hub and rear axle to left hand is a real stretch.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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