Decided to fix speedometer on my '73 L82 4spd. It has a STOCK right angle adapter. It's busted. Speedo cable tests good, speedo driven gear good.
Where can I get this fixed or replaced? I want to keep this car stock.
Second question is the GM part # on the adapter. It is 6478879, ratio
.882 which is listed in AIM (12j, 6.5) for a 4.11 rear axle. I believe this was only available with M21 and Z07 package. I haven't been able to read the code on the rear end yet, the flange is covered in undercoating. I don't have a tank sticker and haven't found the build sheet yet.
.882 which is listed in AIM (12j, 6.5) for a 4.11 rear axle. I believe this was only available with M21 and Z07 package. I haven't been able to read the code on the rear end yet, the flange is covered in undercoating. I don't have a tank sticker and haven't found the build sheet yet.
My transmission is an M20, matching vin #. Speedo driven gear is natural 19 teeth as listed for a 3.70 rear in AIM 12j, 6, but it lists a different adapter, part #6477965.
Is there a chance GM just put on the same adapter for both since the
4.11 rear has a silver 22 teeth driven gear?
4.11 rear has a silver 22 teeth driven gear?
Maybe someone has a similar optioned car. Thanks for any info, this is really a puzzle!
Chris

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