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Ok,I've read lots of post about Big Bores and have indulged with intake/exhaust. But does anyone make performance cams for the TBA? How about head work? Anyone do port and polish? Are pistons available? Where does one start the hot rodding of a TBA around here? Within the US hopefully... anyone already done this? Results? Likes/Dislikes? Price? Inquiring minds want to know.

There are a couple people doing cams , Thunderbike comes to mind, Head work is also being done as well as port and polish (head work) I think Bonneville Performance is doing that. Pistons are available with the BB kits. Not sure if higher compression stock bore pistons are out there yet.

Done it all so far, even the Megacycle cams.
The big bore kit (from 790 to 904cc) is the best bang for the buck.
Good pipes and jetting are cheaper and easier, but also need to be done with BB too.
Frank just had his done by Bill Gately and Bonneville Performance and we're waiting for him to get it together for final thoughts. Bill does good work, but be prepared to pay top dollar for top products.
That said, any decent machine shop can do a port job or even orersized valves for you as well as the big bore machine work. My site has Steve Seely's info and he has done quite a few of them for a lot of members here, for a very reasonable price I might add.
The list is endlest, lots of good stuff can be done, speed is money, how fast do you wanna go?

Hey Nick,
Since you live so close, why not drop in at D & D in Pensacola.

Click Here

Robert has simplified the big bore experience to the extent of trading your barrels for a set of his oversize ones.
He's also well versed on other mods like porting, different carbs, etc.
They also build and race Bonnevilles so he has some experience.

going to have to wait longer as my machine shop messed up my liners and i have to have it redone

Frank

Thanks for all the info guys. I bought my bike at D&D and make a monthly mecca over there usually just to check out all the bikes- I never thought of asking them about cams or head work, thanks for bringing that up. I know that they have some custom flywheels over there for our bikes. They take a stock flywheel and throw it on a lathe and knock several pounds out of it. What an amazing differance in the throttle response afterwards! Night & Day! Pretty sure it only costs $100.00 with your own core.

I tried the lighter flywheel and liked it better with the stock one. The lighter flywheel actually gives up torque in the lower range to get hp in the top range. I had them swap it back. I also had them do their BB kit with the bored and nickeled barrel swap. My goal was to get as much torque, especially early, as I could. The bike is now producing 66 ft. lbs. of torque and over 70+ hp. The key stat is that at 5250 rpm the bike is making 60 ft. lbs. of torque and 60 hp at the rear wheel. Hard not to be happy with that. I haven't seen any dynos that beat that.

My only complaint with the flywheel is that I use the 18T counter sprocket and starting 2-up the lighter flywheel actually took away power starting off. It was definitely quicker with the stock one. They primarily designed those for racing where you continually are keeping the rpms up all the time and the starting loss is meaningless. I have a street bike, not a racing bike. D&D have lots of experience and do really good work. I feel lucky they are my servicing dealer.