These are 1970 '786' castings that have been converted to Stage 1 specs and have received Finish Line's basic pocket porting job. I have gone a best of 12.63 on a 90 deg day with these heads in a 4000 lb GS. Sorry but I do not have any flow numbers on these heads. I had considered having additional porting done on these but decided to just step up to a set of aluminum heads. $800 plus shipping, located in SW Michigan.
