Moparts

When was the last year of the left-hand threads?

Posted By: RTDaddy

When was the last year of the left-hand threads? - 10/12/13 09:45 PM

When was th elast year of the left-hand threads on the left side lug studs/nuts on Mopars?

"IF YOU'RE UNDER CONTROL, YOU AIN'T GOING FAST ENOUGH."
Posted By: skajm

Re: When was the last year of the left-hand threads? - 10/12/13 10:05 PM

Pretty sure 1969 was last year of left hand lugs.
Posted By: 70AARcuda

Re: When was the last year of the left-hand threads? - 10/12/13 10:12 PM

my 70 aarcuda has left hand threads...my 71 Duster does not..my 71 dart does not..
Posted By: Mick70RR

Re: When was the last year of the left-hand threads? - 10/12/13 10:13 PM

My 70 Road Runner had them.
Posted By: hemi71x

Re: When was the last year of the left-hand threads? - 10/12/13 10:46 PM

1970
Posted By: moparfan53

Re: When was the last year of the left-hand threads? - 10/12/13 10:46 PM

Parts book shows 1970 as the last year for LH threads. My own experience is the same. In 1973 I bought a '71 Demon 340, it had all RH threads. My '70 Swinger 340 I bought in 1974 from the original owner had LH threads.

Posted By: ScottSmith_Harms

Re: When was the last year of the left-hand threads? - 10/12/13 10:47 PM

Agreed, 70 was the last year
Posted By: Alaskan_TA

Re: When was the last year of the left-hand threads? - 10/12/13 10:54 PM

Factory TSB about it at http://www.hamtramck-historical.com/images/TSBs/1971/71-22-1.jpg
Posted By: GTSDart340

Re: When was the last year of the left-hand threads? - 10/13/13 04:46 AM

my 72 D200 has them, the 72 B300 motorhome i scrapped had them also.
Posted By: therocks

Re: When was the last year of the left-hand threads? - 10/13/13 01:37 PM

I agree 70.But with Ma never say never.I had a 70 Imp built in July.Had rights all around and the guy was OE buyer.I also had a 67 Fury that had a poly motor from the factory.Supposed to be 66 for the last year.The Fury was an early build car and all OE.Rocky
Posted By: moparmarks

Re: When was the last year of the left-hand threads? - 10/13/13 02:00 PM

Quote:

Agreed, 70 was the last year



Yes for cars. Trucks I know through 73. My dad bought a D100 and a W200 new from our local dealer in 73 and both had LH lugs. I still own the W200.
Posted By: drew72

Re: When was the last year of the left-hand threads? - 10/13/13 02:44 PM

And heavy chassis vehicles like an ambulance went into the eighties.
Posted By: Rhinodart

Re: When was the last year of the left-hand threads? - 10/13/13 03:23 PM

I have seen them on 72 Darts, so I don't think you can say 70 as everything changed in 73, so I will say 1972.
Posted By: moparmarks

Re: When was the last year of the left-hand threads? - 10/13/13 04:09 PM

Quote:

I have seen them on 72 Darts, so I don't think you can say 70 as everything changed in 73, so I will say 1972.



Interesting. I have a couple 71's and a 73 A in the yard. I'll have a looksee.
All my 71 B's are RH including my 71RR built 10/70.
Posted By: Rhinodart

Re: When was the last year of the left-hand threads? - 10/13/13 11:30 PM

Of course I don't know the history of the 71-72 cars that had the left hand threads, they were drum brake cars and someone could have put used drums on it from 70 or earlier, but the rear axles were also left hand...
Posted By: moparmarks

Re: When was the last year of the left-hand threads? - 10/15/13 04:30 AM

My 71 A's are RH.
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