[Keithc8]

The Blue Thunder head with this chamber is pretty big at about 88cc and we have milled the head as much as .080 to get the chamber volume down. The Medium Riser BT head will work with the MR intakes just may want to raise the roof a little on the intake. The exhaust port is a little higher and this might cause some problems with the exhaust pipes at the car exit. The flow on the BT MR head is the same as our Edelbrock stage 3 on the exhaust and a little less on the intake but I developed it to be better below .600 lift for street/strip applications. I think the picture also seems to make the BT head look a little higher on the ports than it is. I believe it is about .100 on the intake and .200 on the exhaust. I have not dyno tested any of heads on an engine yet to give you a comparison. The price of the castings is about 500.00 higher than the Edelbrock. We have done some of the HR heads and they nhave a filled in floor and look about like the MR port in size just raised up. The heads that we did flowed 402 @ .800 with very good through out the range. It has the same exhaust port as the MR heads. To use a regular HR intake you would have to fill the floor about .500 at least. Hope this helps a little on information about the heads.
We are still trying to get some more pictures posted as well. Thanks, Keith