Thanks to all who replied. These will give me something to work with.
John
On 6/11/2021 4:26 PM, John OBrien wrote:
> Hi Guys and Gals
>
> I am trying to calibrate my tach. I installed a Spiyda RVI - RVC
> conversion board, because my tach was acting wierd. Anyway, I am
> still trying to get this setup to read correctly. My question is, on
> my BJ8 with standard 3.9:1 diff. what should my RPMs be in fourth gear
> going 50 MPH , without overdrive engaged. I'm running 165/80R15
> tires. I'm just looking for a reference point to compare what should
> be, and what I am reading.
>
> Any help is appreciated.
>
> Thanks
>
> John
>
--
John O'Brien
'61 Bugeye (Lucy)
'65 BJ8 (Madelyn)
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