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Vitesse
Yes, SCCA made the GTV's run at those weights because they imposed a 1.2lb per cc penalty (1.2x1779cc=2135lb). Internationally, FIA homologation papers dictated weights based on what they weighed on the showroom floor and parts based on if they were factory options. I don't think adding 200cc engine volume and 2 headlights added 251lbs to the same 105 chassis. My car ran in the Bulova series in Canada from 1970 til the series ended. They appear to have followed FIA group 2 touring car rules with a weight around 1950lbs. I say appear because interestingly enough the FIA databases have 30+pages of homologation papers for the 1750 GTV and GTAM but have "misplaced" the weight pages for both. Also, I have found brochures for the Bulova series and talked to a few knowledgable people about the series but no one has documentation of their specific period rules. I have my car to nearly exactly as it ran in the series but it weighs 1930lbs. VSCDA will allow it to run at this weight if I can document it being "Period Correct" for the car and series, otherwise I must prepare the car to SCCA period specs and make it weigh 2135. (That would be like strapping my wife and 5 year old in to go racing with me!)
A side note to this. The GTAm was simply a 1969 1750 american spec GTV altered with lots of trick parts from the performance parts catalog. The GTam never raced in the US because it had no series to race in. With Vintage racing allowing cars prepared to rules all over the world, we could have an opportunity to build a GTAM and race it wheel to wheel if we could only document the constraints it ran under. (You hear me Erik? drop in a modern ts with a modified cam cover to look like the GTAm cover get 250hp and drop the weight to around 1900lbs.)
Andy
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