so lets look at a little more fair comparison....although it is in no way fair.
continental tire challenge cars.
ford mustang boss302. built by ford on the same assembly line as street mustangs.....till it comes time for the racing equipment. it is then pulled off of that line, sent out to a welding shop, has the roll cage welded in, is returned to the autoalliance plant(you know? the one that the ford haters said was closing?) and from that point it is assembled by hand. when it leaves the ford factory, it is ready to race, with the exception of a driver, fuel and spare tires.
it must(per the rules) run the ecu delivered in it from ford, and it runs an air intake restrictor. it carries 17 gallons of fuel.
chevy camaro gs-r. built by chevy on the same assembly line as street camaros. it leaves the factory as a street camaro, and goes to riley racing, where they prep it for racing. it can run aftermarket ecu's, has no air restrictor, and carries 18 gallons of fuel.
they both weigh approximately the same. yet........in this series last year, the only 2 races won by camaros, were races in which the top mustang and bmw teams were either knocked out of the race by accidents, or severely set back due to accidents.
it was the ford mustang that came within seconds of taking manufacturers championship from bmw last year. not the chevy camaro. this year, this series started off much the same. ford mustang won, followed by a flotilla of bmw's. there wasn't even a camaro in the top ten. and this was at datona, where supposedly the camaro's 6 liter should have a massive advantage on the long straights. oh yea...almost forgot..the bmw's are factory built racers too....and they too run air intake restrictors.
the 24 hours of daytona was finished by fords 1,2,3 in daytona prototype.
someone earlier up mentioned that the vettes don't do well.....they did kick but in the 24 hours in the gt class.
pot stirred.