Breaking in of my fresh 360, nothing over 4000 RPM yet, but soon.Original, numbers matching 1975 Dodge Dart Sport 360 with only 70,000 miles. Brand new rebuild front to back. Fresh 360, 10-1 comp., XE275XL Comp Cams .525 hyd cam, heads ported / polished / cc'd/flowed by FHO (ForHemisOnly http://www.forhemisonly.com/ , 2.08" intake valves and 1.60" exhaust valves., Comp cams roller rockers, Edelbrook Torker 340 with 750 Holley, Hooker Super Comp Headers, flowtech X pipe with Thrush welded 2 chambers, 727 with Transgo reprogram kit, 2500 stall, 3.21 posi.