Im ready to make that leap now fellas, I snatched me up a 4 mill 115 crank, already trued and welded. Now im on the hunt for a set of cylinders ill be pleased with. Ive seen a few posts that a set up 4mill drag ported stockers will hang with a 421 cub, so is it just a matter of being incognito?? This sucks because i just spent 700 on these cylinders i got, (port, bore hone,complte top end kit)......but thy have to go, I need more and frankly these 4 strokes are getting faster and faster, theres sveral at my track running 4.5's and better and my lil stockrs cant keep up. Best Ive got out of em was a 5.0 but the guy at track said clocks wre screwed and i was running faster.
So ill mainly be running 300 ft dirt, what do i want? 68mm 4 mill and go with the 421 or stockers drag ported for a 4 mill? I do have a extra set of stockers unported. With the 68mm big bore ill have to have big bore pipes right???