Re: Speedometer calibration
As far as I know all ZR-1s came with 3.45 ratio. The power band of the engine is very friendly to a quicker gear - a very desirable mod if it's in place, and no cheap to do right.
That tag appears to be a common "mod". Our car has one too, but it's not factory.
And don't let the opinion of one uninformed guy bother you one bit!
Cheers, and welcome,
- Jeff
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