lms1977 Posted July 5, 2011 Report Share Posted July 5, 2011 (edited) looking to by a crank and cyls that are dune ported by F.A.S.t it is a 4 mil do they run well for open trails and hill climbing coal hills. Edited July 5, 2011 by lms1977 Quote Link to comment Share on other sites More sharing options...
DallasGDub Posted July 5, 2011 Report Share Posted July 5, 2011 I do not know about the hills in PA other than what I have watched on here, but looks to me like you can never have enough power for those things. However, a ported stock cyl 4m is great for adding power all around. You will pick up both HP and Trq. The 421 serval would be better, but cost a little more. Your current set up will be restricting the full potential of it. I ran PT mids on a ported stock cyl. Great pipes in the trails and lugging around, but they do hold back a lot of topend power. I never thought it was a big deal until I tried a different set of pipes. The difference was night and day. Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted July 5, 2011 Report Share Posted July 5, 2011 Out of all the motors I've ran, my FAST stock cylinder dune port was my favorite motor. Plenty of power and zero issues. Although I just rode a FAST 4mil serval all weekend and it flat out boogies! Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted July 6, 2011 Report Share Posted July 6, 2011 Yep the fast dune ported 4 mill will have the power you need. Super strong mid and top end. Quote Link to comment Share on other sites More sharing options...
Infamous039 Posted July 6, 2011 Report Share Posted July 6, 2011 Best motor I have ever owned hands down. Quote Link to comment Share on other sites More sharing options...
barahonapr Posted July 6, 2011 Report Share Posted July 6, 2011 How much will it run to get that done? Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted July 6, 2011 Report Share Posted July 6, 2011 How much will it run to get that done? Just start adding up prices on jeff's web site, or give him a call. He might be able to give you a better deal on a complete engine package vs adding up all the individual prices. Quote Link to comment Share on other sites More sharing options...
barahonapr Posted July 6, 2011 Report Share Posted July 6, 2011 Yea man sounds good ill definitely do that Quote Link to comment Share on other sites More sharing options...
toytech Posted July 7, 2011 Report Share Posted July 7, 2011 (edited) Jeff's 4 mil dune port rips!! good all around power Edited July 7, 2011 by toytech Quote Link to comment Share on other sites More sharing options...
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