Thanks for the above Glen.and yes the 186's were professionally ported.with screw in studs and Guideplats..i bought this motor from a buddy who built it for his race car 10 years ago.he never did get to race the motor.dropped it in his tow truck and there it sat driven about once a month on the occasional tow.hints the current rv cam and stock stall in th400. I'm not sure what the deck height is because motor is a long block now.all i planned on doing was a valve job and cam.can still see all crosshatching.also I currently have 2 carbs.holley 650 vacumm sec.and quadrjet spread bore.you like the quadrajet from a performance standpoint?