Spring pan is different twixt 4 and 4A. Spacing on shock mounting studs is
wider and shocks not interchangeable unless matching spring pan also changed.
Ask me how I know thatâ?¦
Nick in norcal
Sent from the wilds of NorCal
> On Oct 10, 2022, at 11:17 AM, Allen Hess <allen.k.hess@gmail.com> wrote:
>
> I have a 63 TR4. Moss and Roadster Factory list different part numbers for
> the 4 and 4A. Physically I think that they must be the same, so different
> damping rates? Does anyone know the difference? Could it be the change to IRS
> and overall handling characteristics?
>
> Thanks
> Allen
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