98" Big Bore Kit

[Lone Ranger]

When ordering a Fuel Moto 98" Big Bore Kit they ask which cam option you want either Wood TW-6-6R or Wood TW-555-6R. Considering putting it in a 2002 fuel injected stock 88 ci Fatboy with Bassani 2 into 1 exhaust, K & N air filter and Dynojet PV-2 tuner. What's the difference between the 2 cam choices? Dyno sheets I've seen they appear similar.

[Hossamania]

Fuel Moto will be more than happy to explain the differences and make sure they set you up with what you want based on your riding style.
But I'm also interest to hear.

[RoadKingKohn]

If I remember correctly Woods had dyno sheets on his website for different cams.

[Lone Ranger]

If I remember correctly Woods had dyno sheets on his website for different cams.

Yes, I was able to see more dyno sheets on woodscarbs.com website. All things comparable appears the tw555-6R cams hp & torque numbers are 10-15 higher than the tw6-6R cams. The tw6-6R might be better with stock compression and the tw555-6R might prefer more compression, just a guess.

[kd]

Compare the graphs between the 2 from 2,000 to 3500.  The one that produces more low rpm torque will be best for spirited lower rpm style riding.  The cam that produces better from 3500 and up will have to be ridden in the higher rpm to have a peppy ride.  If you don't ride that way then the higher torque and HP will not get used so it's a moot point.  How do you ride now most of the time and will you continue that way when you get more power.

[JSD]

I would get your heads upgraded to take advantage of the kit 

[Hossamania]

I would get your heads upgraded to take advantage of the kit

I'm with JSD. If going thru the trouble of building the motor, include the heads in the formula. Talk with your builder, or Fuel Moto at the very least, to come up with a designed package to take advantage of the work going into it. Don't forget exhaust system.
What are your goals? What is your budget? What is your intended use, your intended riding style?
What model bike?
And most important, have you budgeted for a proper tune?
Good luck and have fun with it.

[Hossamania]

I almost forgot, what are your plans for the clutch?

[Coff 06]

Although mine is more of a hot rod. I run the Woods 9B in my 06 98" FXSTSI set at 11.0/1 ,10.2/1 corrected. This setup was put together with the advice of Don at HDSP. I couldn't be happier.
With my 2-1 on it the lower RPM range still has good performance.
With my 2-2 exhaust it was pretty lazy in the lower RPM range.
I did also upgrade my TB and injectors.      Coff 06
     

[Lone Ranger]

I almost forgot, what are your plans for the clutch?

I need to visit with mechanic and get his thoughts. Fuel Moto has Aim variable pressure clutch for $285 which seems reasonable. Leaning toward Fuel Moto 98" Big Bore kit with the TW555-6R cam and Level B CNC heads. I would need to update valve springs anyway so might as well do the whole heads. I plan on keeping Bassani 2-1 exhaust I currently have. Wanting to try and keep build under $4,000. Just these 3 items I'm up to $3730. No idea what labor cost might be?

[rking1550]

 I believe the 555 cam will need valve springs on 2002 heads to handle the extra valve lift.  Just something else to keep in mind when planning. 

[Lone Ranger]

I believe the 555 cam will need valve springs on 2002 heads to handle the extra valve lift.  Just something else to keep in mind when planning. 

I know, the Fuel Moto heads I plan on getting come with.650 lift Beehive style valve springs. I need to find out if I can use my original Rocker Boxes with them.

[rking1550]

I believe the 555 cam will need valve springs on 2002 heads to handle the extra valve lift.  Just something else to keep in mind when planning. 

I know, the Fuel Moto heads I plan on getting come with.650 lift Beehive style valve springs. I need to find out if I can use my original Rocker Boxes with them.

You can use the original rocker boxes.  Sometimes they need to be clearenced, with high lift cams,  but with the .555 lift I don't think there's any issues.

[FXDBI]

I believe the 555 cam will need valve springs on 2002 heads to handle the extra valve lift.  Just something else to keep in mind when planning. 

I know, the Fuel Moto heads I plan on getting come with.650 lift Beehive style valve springs. I need to find out if I can use my original Rocker Boxes with them.

You can use the original rocker boxes.  Sometimes they need to be clearanced, with high lift cams,  but with the .555 lift I don't think there's any issues.

Still need to check them in the corners at full lift.  Also you might need to clearance for the cam lobes in the cam chest to insure you have adequate clearance.  Bob

[Colvinb]

With the headwork you'll want the 555 cam. It has more lift and slightly more duration so it would take more advantage of the 98 cubes and upped compression.