Re: '70 Chevelle Front Rotors
 

Hey Guys great info.
I just checked my Build sheets from 1970 Chevelles and I have a few "AS" coded in box #12 (Steering Knuckle) that are dated from April.
The latest being my own former LS6 car that had a scheduled date of April 23, the next date I found is April 16 and so on.

Some of you mentioned January as the change over date but there are many that are in February March and April.
Maybe the average date was January/February from most plants before switching over to the one piece but there are many going into cars as late as April especially the Atlanta Plant were I have many with "AS" but they did indeed switch over to the 2 piece rotors as of May as all my May build sheets have "DT" for the Atlanta Plant, on average the other plants are earlier.

My Ls6 Built on April 23 1970 did have the original 2 piece rotors with the correct backing plates of 5463496 & 5463497

Re: '70 Chevelle Front Rotors
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: XXXBlackLs6M22</div><div class="ubbcode-body">they did indeed switch over to the 2 piece rotors as of May as all my May build sheets have &quot;DT&quot; for the Atlanta Plant, on average the other plants are earlier
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In the above comment it is supposed to be a 1 not a 2 piece rotor from this quote. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img] Went to change it but ran out of edit time.

Re: '70 Chevelle Front Rotors
 

My 1970 Canadian built Chevelle has a built date of January 12, 1970 and has the # 5463496 &amp; 5463497 backing plates.

Re: '70 Chevelle Front Rotors
 

if you buy the re popped 2 piece rotors (they are Nice) I have bought two pair. ..check them for being straight..3 out of 4 required a cut to be true..prob from drop! shipping!

Re: '70 Chevelle Front Rotors
 

I have also used the repops and they are very nice. I used the original hat from the car and the repop rotor, had them recut correctly and they were a perfect bolt on with no issues and look OEM.

Re: '70 Chevelle Front Rotors
 

is there more than one place repoping these?
thought there was a good and a bad one out there.

Re: '70 Chevelle Front Rotors
 

Thanks for all the replies. I am going to go with a pair of the repop 2 piece rotors.

Re: '70 Chevelle Front Rotors
 

Does anyone know if the rotor info applies to other GM cars of the era such as Camaro and Nova? I've got a 1967 Camaro I'm going to need rotors for.

Re: '70 Chevelle Front Rotors
 

1967-69 Camaro &amp; 1967-70 Chevelle &amp; Nova all shared the same 2 pc. rotor.