Leaderboard

You need to have your cylinders ported specifically for a four mil. You won’t gain anything by dropping in a 4mil crank. Best bet is get fresh cylinders and have them ported for the 4mil and get a new crank for them. ( some minor port work on stock cylinders can be modified into 4mil. Just depends on how heavily ported the are. ) Or you can just drop another stock stroke crank in it. I have OEM cylinders and an OEM crank for sale on the sales section. FYI. Sent from my iPhone using Tapatalk