I was wondering if anyone had run 390s on there tunnel ram set up. I am putting together a bbc small roller 238/244 @ .050 comp cam,1.8 rockers,old 1984 weiand tunnel ram, dart 269cc. I was just thinking the small carbs might be better drivability than the to 750carbs I have. I will dyno both sets I just trying it to see if the power would be close @ useable rpms.