440 Stroker jetting [Archive]

drew416ex

12-05-2007, 04:45 PM

Im building a 440 stroker. Have a sparks full system, K&N no lid, hot cam stage 2, oversized intake valves, and ported and polished head, with a 39mm FCR. Could anyone with a simmilar setup help me with jetting so i can order them before i get it built. Please only answer if you have an FCR since they are a little different from the stock carb. THANKS! :D

yz426exrider

12-06-2007, 05:40 PM

i use a 165 main and a 42 pilot air screw turned out 2.5 turns and the clip is in the 4 position, i really have a big port and polish also i dont know how good this information will be consdering who built your motor and stuff.

drew416ex

12-06-2007, 07:16 PM

Currently with my 416 im running a 170 main, so that 165 would be too small. I cant remember what pilot i have because it hs been so long since i put it in. I just need a good starting point.

drew416ex

12-07-2007, 02:52 PM

Does anyone out there have a 440 stroker and 39mm fcr? Need some help.