in my 440 i was thinking about giong w/aftermarket vavles and stuff...which ones and are they titanium?and where can i get em?what else will make it scream besides a crank...got hotcam stage 2 cam,port work,10.5:1 comp piston,big gun pipe,440 kit,think thats it...i need an aftermarket carb too?or who can bore out a stock carb besides sparks b/c they take to long and are too expensive???

 

You don't need valves unless you are going to change your ignition to allow the machine to rev higher. At that point, you will need heavier valve springs and lighter valves. White Brothers and Kibblewhite make nice valves, I've installed both in customers' motors. They usually come as a nice kit, and there are different materials & springs depending on what you need.

Instead of boring a stock carb, try to find an FCR39 carb from ebay or something, that should help your carburetion needs if you think the boring of your stock carb is too much. Depends what you can find an FCR39 for on ebay or where ever.

 

Rocky Ridge bores carbs-270-259-9604. I know a few people that had it done and said it was well worth it. They charge $125, and have a quick turn around time.