macdrew77 said Yes I have 2.73 gears by the way. Leaning towards 71-74 360 2bbl 410/412 252/256 75+ 360 2bbl 410/410 252/252 Meling RV cam 420/443 204/212 (@.050) Not sure if 302 heads and 273 manifolds will want the extra exhaust lift duration Click to expand...