Ohan,
I believe the correct number for the O/D transmission is 1504 not 1020.
Good luck finding one.
Also, the rearend ratio on the standard transmission is 3.89:1 the ratio on
an overdrive rearend is 4.11:1.
I find with the 195 60 13 tires on my car the speedo is exactly 5% low. So
when I am indicating 60 mph I am actually going 62.3 mph.
Here is an idea. I was told some speedo shops can do calibation to your
particular setup by adding a device at the transmission that can be
calibrated.
Just do a search for speedometer calibration in the phone book.
Philip "Commodore Blues" Hulse AKA "Ross"
> Hi folks. Here is my dilemma.
>
> I recently installed an overdrive in my SV. Although I am having issues
> with the o/d solenoid engaging, my main concern for now is that the speedo
> gauge reads 20-25 MPH over. The gauge SN5324/50 1020 is what I have on
> right now.
>
> My question is this. If I was to replace the speedo, what would be the
> best or closest ratio gauge should I go with.??
> "Keep the 'beam alive"
> Ohan Korlikian
> Vancouver, BC
> http://www.sunbeamcanada.org
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