Does anybody know much about  S&S E Series carby fitted with a Thunderjet, that I'm thinking about putting on my 05 Dyna

If you have headwork, compression, cams, big cubic inches/stroked you could be a cantidate.. If your thinking about putting it on a stock to mild build of cams/air cleaner/exhaust only you are wasting your time. Need more info on your build but::::

I have heard pro and con about these-- some say difficult to set up to never got it right--others love them.

Maybe some one will come along that has one or used one-- personally I wouldn't. I have a standard E Series on my 80" Evo with headwork/compression/cam/ignition/etc and it's more than enough carb for the job-- just depends on what your putting it on. If I had it to do over again, I would have gone with a 42mm Mikuni....

Cheers,
V2Evo96

The thundrejet, is just another fuel circut, like miki carbs have i think four.

myself i think the E is ok, but i think the old B is a much better carb performance wise, as it has a longer body to help with vellocity. the E is a short carb that was mostly to help with people complaining about leg room with the B & D series, the E has the same size butterfly as the B but the B has a larger diamiter Venturi.

personally i would not replace a CV40 with a S&S E as i think i could tun a CV40 to kick an S&S E's but. the thundrejet was sort of helpfull in tuning the ol s&s B and s&s D, becase as the s&s B came it was a bit of a dog to ride with on the street, but as soon as you drilled out the stock air bleed and fitted a lare air bleed via useing a main jet ( not really needed, but alows you to ajust airbleed ) thing is once you found to ideal size airbleed you don't need to change, so you could try enlarging air bleed hole size from stock 43 and going up, till you found ideal. once you have the ideal size airbleed in you can increase your itermediate size as it will run on intermediate jet longer with a larger air bleed. this helps the carb throtle better, then you have the main jet, if you want speed you have to run a large enough man jet. but runing a fat main jet will make the midrange feel less responcive, so if you run the main jet a few sizes down you get a good crisp throtle responce, but at high revs your power will be down, so you put a thunderjet to add some fuel up high, i think they start feeding fuel in from about 4,500 rev up. but as KiwiDave has stated it's debateable if the thuderjet helps or if it hinders. i have one on an S&S D it made my 95 cubic inch twin cam fly but i just left the thunderjet as it was never changed the jet size just played with other jets. Cow " L A Cycles is a master at tuning them i road a 98 inch stroker shovel for a about 15 years on the street with s&s D and Cow put a killer tune into it also built me a motor thats still runing hard today, just i took the D off b4 selling bike to my mate, the S&S G it has on makes that shovel feel like a baby , the D made it wild to ride on the street.

in the end m8 up to you, but as i said a CV40 would kill a stock s&s E with thunderjet.

cheers