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[Lennie]

I bought a 103 from a 2005 cvo eg I am putting it on my 2005 ultra classic. I am building it up some with head work and cams. My question today is about the throttle body and injectors. What should I be using the motor did not have it on it. Will the intake from my 88 work. Thanks

[VANAMAL]

the 88 tb should be fine. The 103 from this time was an 88" with the the 95" big bore and a stroker crank. The injectors may be different though. i replaced my cvo 103 injectors with a pair from zippers recently. they also had the hemi head design. Great engine

[Unbalanced]

As long as the throttlebody is a 43mm or larger you should be ok.  The injectors were 4.35  some of the SEEGS came with 25 degree and some with the 8 degree injectors most cases the 8 degree were swapped out to the 25 degree injectors by harley.   Back in the day a lot of people swapped out the 43 for the FLHX 50mm that came out in 06 or bought the 50mm SE Throttlebody.