4.125". They haven't been sent out to be ported any more yet though. There just like they were when they came off a nascar engine. Just their cnc porting. They will be sent out later on to be hand ported, but I wanted to see what they would do as is for now.

 

I was over at Dave's place yesterday and he fired up the car for me. This thing is Billy ****ing Badass!!! The car sounds great, idles nice and rings up fast. Everything on this car is tweaked, but done w/ precision and accuracy. The amount of time, money, effort, committment and dedication Dave and his Dad put into this project is unbelieveable. I look forward to seeing it on the track.

 

updated pics please.

 

They had to sell their digital camera to help buy parts for the car.