What one is faster?

[*Quad*King*1986]

I have a stock cylinder that has been FLOTEK trail ported, the head has been milled for higher compression & 90+ pump gas, and port matched for a +3 stroker crank... Now I also have a Vito's 240 BBK head & cylinder (not an oem sleeved kit) that has been trail ported, and also the head has been milled for a bigger piston (73mm I believe) but it's not set up for a +3 crank like the other one. Keep in mind I am running a Keihin 34mm PJ carb, and an FMF gold series fatty pipe w/power core2 silencer (I know it's restrictive so I won't run it for too much longer) I have the vitos +4 timing degree key too. So with that in mind, what one will produce more power with all of my current mods? Oh and by the way I don't have the +3 crank but let's pretend I ran the +3 with the first topend I described or even with both of them and only the 1st one is port matched for it. Do you think the first top end will out perform the BBK? I'm curious to hear your oppinions, both cylinders need to be bored & a new piston but I only want to get one up & running for now. Which one should I bolt on & ride with? Thanks guys!

 

[sicivicdude]

So what you're asking is, which one is faster, a stock bore stroker or BBK stock stroke?

I would think they're probably about the same really. The increase in displacement from the BBK is offset by the increased torque from the stroker crank. The BBK might put out more horsepower simply because it's setup to turn slighty higher rpm but I doubt you'd even be able to tell that...

Personally, I would let your decision be based on your future plans. If you never see yourself going for a high hp big bore blaster build, sell the vito's kit and keep the +3 ported top end. It has a LOT more lives in it (if both are stock bore!) and will run pretty strong.

 

[*Quad*King*1986]

Yah I was thinking the same thing, I figured it would be a close call. Thanks for your input. And to be honest I think im going to hold onto both top ends and make a BBK monster, then if something goes wrong with that I can always swap back to the +3 crank.