[SamBinfield]

Originally Posted by Duddha

Appendix J principles were applicable for both the Homologated and Non-Homologated car, 140L for a 4700cc Shelby Cobra 289 according to Form 115 and same for a Ford GT40 which in 1965 was considered a prototype, all that according to the scale available in the document.

The difference being that in production cars, this was sometime more restrictive as based on a production model rather than something built for competition purpose only.

Gear ratios were free in period for the Non-Homologated cars and remain so today as you cannot couldn't possibly tell what each cars were running at each Competition from one specification to another, just like springs are free, etc.

Makes sense - thanks for clarifying