Anyone have a stock 1968 Dart 340 4 spd ? I was wondering what your vacuum reading is. I bored mine 20 over with eddy heads KB pistons same cam . My vacuum is only 13 at idle. Engine Acts like it has a vacuum leak but cant find any. This includes putting a vacuum gauge on the dip stick tube after sealing valve covers and vacuum ports.I cant remember but I thought it should be around 16 In.
Thanks
That's about all my pure stock 340 4sp back in the day would pull. No worries. Same with another friend of mine. with his 69 340 4sp Dart. We compared and the best at idle was 13 - 13.5 Cars ran great.
