The yenko was a dealer option,you couldnt order it at any other dealership.Same for the Berger Camaros with 400hp in 2002,and the 69 ZL1's would deffinattely be considered the fastest,but they werent street legal.

 

69' ZL-1 would be hands down the fastest production fbody. Although what is stated below says they ran low 13's. This was done while babying the car almost halfway down the track. With a good driver, and a good track, the cars ran mid 12's. The trap speeds of these cars showed the amazing power plants tire shreading power. Half the time why you see low 13 sec et's being quoted for this car are because of the magazine that tested them. Imagine a magazine editor who was used to driver who had never sat behind 500 hp motor. Of coarse they crapped in their pants. People who actually purchased these cars and raced them at the strip, were the ones who had anychance of making a car like this perform on street tires. Amazing car!

"Overshadowing these dealer modified Camaros was the factory Camaro ZL1. Specially designed to compete in the NHRA Super Stock drag classes, Chevrolet made it an option under the COPO system (code 9560). The cars began as SS396/375bhp Camaros with the F41 suspension. The SS trim and engine were deleted, and the 427 engine, cowl-induction hood, front disc brakes, a choice of heavy duty 4 speed transmissions or Turbo Hydra-matic, and a 4:10 posi axle were added. But instead of the regular iron-block and head L72 found in the dealer installed Camaros, the ZL1 sported aluminum heads and the first aluminum block ever made by Chevrolet. It shared the L88 aluminum head/iron block's engine rating of 430 bhp but made closer to 500 bhp -- making it probably the most powerful engine Chevrolet ever offered to the public. And the engine weighed just 500 pounds, the same as Chevy's 327 small block. The car was blessed with a 5 year/50,000 mile warranty and was fully street legal. With factory exhausts and tires, it turned low 13s; with headers and slicks, it could turn 11.6s @ 122mph. This was the fastest car ever produced by Chevrolet. Performance had its price -- $4,160 for the ZL1 engine alone pushing the price of the Camaro ZL1 to an unbelieveable $7,200 (about double the price for a SS396 Camaro). Chevy needed to build 50 to qualify the car for racing, and in the end built 69 Camaros and 2 Corvettes with the ZL-1 engine. Their high price made them difficult to sell and at least 12 engines were removed and about 30 cars were returned back to Chevrolet. It took until the early 1970s to sell them all. One can only wonder what they are worth today."

 

actually the baldwin motion phase 3 camaro was faster than the zl1.it ran 11s.

 

Factory cars would not include bergers or yenkos or Copos....ZL1 I believe was a factory option and it has to be the fastest production car ever...69 Trans Ams were also fast but I dont think quite as fast as a Zl1...89 Turbo TA I would have to think is one of the fastest too...I dont think anyh 4th gen or 3rd gen could take honors over a ZL1 though...Firehawks and SS's and WS6's run low 13's and a Zl1 is capable of much more than that,back in the day with a inferior tire to what we have nowadays...

 

http://www.autofacts.ca/classics/fast.htm