Just for comparison, I'm running a Jegs #200161 in my 273..441 lift,split duration, intake 218 @.050 exhaust 228 @.050.lobe sep 114*. Got a lumpy idle but smooth driving/cruzing with a great sound.I am running TTI shorty headers with full 2 1/2'' exhaust,DynoMax mufflers.Edelbrock Performer with a Edelbrock 600 AFB.Now the 273 is no powerhouse(2.76 gear) but runs well for what it's worth.I like it. Summit #K6901 along with the Comp SK20-210-2 are all pretty close for the 273/318/340/ 360 small block.
