Does anyone know the stock throttle body size on a 2011 Dyna?

 

46mm.

 

Thanks for the information. If im running a 107 kit with head work , woods 888 cams, high flow air filter, bassani exhaust, woods lifters and pushrod. I may just buy a bigger throttle body, high flow injectors and either keep my woods 888 cams or bump up to woods tw-999-6A cams. Although the Woods 888 cams seem to keep going up until 6k rpms until they drop off. Right now Im running cylinders with pistons that are 10;2;1 compression. I may consider running cylinders with 10;8;1 compression with pistons. I have automatic compression releases in my heads/

 

If you're going to up your game to a 107" at least go with a HPI 51mm and 6.2 injectors.

 

If your heads flow say more than 260 CFM@28, I'd go to a bigger throttle body. Some of the vendors here might be able mod the stock throttle body for more flow. You'll need to know the intake port diameter at the head.

 

You can get a 50mm screaming eagle cable driven throttle body that comes with larger 4.9 injectors for around $330. It’s a good deal since it comes with everything you need and may fit your build well. I’ll be using it with a 110 with fm level b heads and woods 999-6a cam, as it was recommended by the guys at fuel moto.

 

I just did a 110 with SE CNC heads and SE259E and used the SE 50mm/4.9 and got 117HP. I've heard they're good if you'll be under 120HP. I paid about $350.00.

 

Do you happen to have the part number of the SE 50mm throttle body? And the throttle body already comes with the larger 4.9 injectors? Do I have to get a new manifold?

 

u

27623-05A Comes with larger 4.9 injector. Manifold not needed. https://shop.newcastlehd.com/part/27623-05a

 

3
B. SCREAMIN’ EAGLE PRO 50MM
EFI THROTTLE BODY*
Higher flowing for larger displacement race engine applica- tions. Includes throttle body and unique intake flanges and seals. This big bore throttle body features a 50mm throttle plate (a 4mm increase over the ’06 Original Equipment throt- tle body) to provide increased airflow and more power. Higher flow rate injectors provide 25% more fuel to complement the increased airflow. Sensors, injectors (with a flow rate of 4.9 grams/second) and the IAC stepper motor are fully assem- bled on this bolt-on unit. All EFI-equipped models require ECM calibration (priced separately). For race application only.