Best 273 and 318 builds (NO 360's please)
My favorite 273 is a 4-14-64 block bored +.040 with the mains torqued to 85 ft lb and honed with FEL PRO blue head gaskets under the torque plates, head bolts torqued to 100 ft lb. TRW forged 10.5's with the domes milled flat, Total seal rings and TREND light weight piston pins on 340 floating rods with SPS bolts and resized big ends, 273 std forged crank, all ballanced. Buttoned up with a HV HP oil pump, a 340 windage tray and a stock 273 oil pan. "72" 340 J heads, milled .040 block side and .038 on the intake side. cc'd to NHRA minimum + or - .2 cc. Port matched and blended bowls. Hardened exhaust seats, 1.88 intakes and 1.60 exhaust. The cam is a used "72" 340 and springs with a cloyes true roller timing chain. It has the thrust plate bolt with the hole through it. "72" 340 rockers and shafts shimmed for about .03 preload. Buttoned up with a "71" 340 intake and TQ carb and a carter electric fuel pump. Gears are 8 3/4 and range from 3.91 to 2.76 depending on intended usage.