Zbadboy Posted December 27, 2012 Report Share Posted December 27, 2012 Okay I am looking to purchase either a 421 cub or 421 serval. My understanding is cub has high end power mostly for dragging, and the serval port timing makes a more useable power curve mid to low, for duning. Here is my question if I dune port a 421 cub am I lowering the power curve making it similar to a serval? And if I dune port a serval what am I gaining there? I am trying to figure which to purchase I just don't want to buy a cub and port it if the end result I am creating is closer to a serval, just I spent more money to make it. If someone could please help me better understand what I would be getting with the dune port work on each top end I would greatly appreciate it. Personally I mostly ride the dunes and bowls but I do like to hill shoot so I'm trying to figure which way to go on these motors to fit my style of riding. Thanks in advance for your responses to help me understand the differences. 1 Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted December 27, 2012 Report Share Posted December 27, 2012 Okay I am looking to purchase either a 421 cub or 421 serval. My understanding is cub has high end power mostly for dragging, and the serval port timing makes a more useable power curve mid to low, for duning. Here is my question if I dune port a 421 cub am I lowering the power curve making it similar to a serval? And if I dune port a serval what am I gaining there? I am trying to figure which to purchase I just don't want to buy a cub and port it if the end result I am creating is closer to a serval, just I spent more money to make it. If someone could please help me better understand what I would be getting with the dune port work on each top end I would greatly appreciate it. Personally I mostly ride the dunes and bowls but I do like to hill shoot so I'm trying to figure which way to go on these motors to fit my style of riding. Thanks in advance for your responses to help me understand the differences. I have a ported 421 Serval from Redline Racing and would HIGHLY recommend calling him to do yours. He has a solid setup for them that not only adds power in the upper RPM (which they are lacking) but gains throughout the curve and loses no bottom. Its one of those rare WIN-WIN scenarios. Quote Link to comment Share on other sites More sharing options...
Pastrykiller Posted December 27, 2012 Report Share Posted December 27, 2012 You can also make a 421 cub very dunable. From what I've been told, different pistons with altered crowns will change port duration. Not the expert but read up on what Nate McCoy does to the 421 cub. Quote Link to comment Share on other sites More sharing options...
Zbadboy Posted December 30, 2012 Author Report Share Posted December 30, 2012 Thank you for the responses. Quote Link to comment Share on other sites More sharing options...
nastyracing Posted December 31, 2012 Report Share Posted December 31, 2012 Decked cub... Talk to a good builder who can make power everywhere. Quote Link to comment Share on other sites More sharing options...
camatv Posted January 3, 2013 Report Share Posted January 3, 2013 either casting can make nice power if your shooting for more drag oreintated you should start with a cub. if for more rideable ( depending on your description of "rideable") shoot for a PORTED serval. most as cast servals left banshee owners somethign to be desired. i felt they did what they were meant to do adn deliverd lower port timings to make a "builder" have to work for a good running motor.. cubs you can go in there and fart around with a file and build the motor half ass right, run it on alcohol, buy "drag parts" and blamo you got a decent drag mill. Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted January 4, 2013 Report Share Posted January 4, 2013 If this is what you want " personally , i mostly ride the dunes and bowls but also like to hillshoot"....... Then i recommend looking into a well tuned Serval !! Good sale on them in our sig. below..... Quote Link to comment Share on other sites More sharing options...
possum Posted January 4, 2013 Report Share Posted January 4, 2013 servals can be setup to run good. i believe jeff has a good grasp on the proper dome for the serval. Quote Link to comment Share on other sites More sharing options...
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