Best 273 and 318 builds (NO 360's please)
here is my 318:
KB-845 forged pistons @ .030 ($350/set on ebay)
stock 340 forged crank 010 010 ($120 on ebay)
stock valve sizes 302 heads ported by myself
11.3:1 compression
273 rockers
comp xe-274s solid cam
air gap intake
750 mech sec carb off my 360
3000 conv
4.30 gears
nuthin fancy, but it runs 13.40's here at 5800'
Build that 318, there is nothing wrong with them! I get alot more respect running 13's up here with a 318 than I did running 12's with a 360!