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FCR Carb needle options 07

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I think I already know the answer to this question, but do you guys know if some of these FCR needles are interchangeable between years? For example I have 2 JD jet needles for my 01 426. Will these work on my 07 FCR carb? Does anybody know what the correct stock needle is for the 07 carb? I bought my carb used on ebay for my 426 and want to know what my options are.

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All the FCR carb needles for all years are interchangeable. I would suggest that you try out the earlier JD needles in the '07 carb and see how they perform. You will need to use the JD recommended main jets.

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All the FCR carb needles for all years are interchangeable.

 

 

Really?  The '01 is not the same carb as an '07.  The needles for the '01 were from a completely different series.  Double check the lengths and diameters.

 

Stock for an '07 is the NFLR (5TA-14916-LR).  If you're looking for an alternate needle to help the off-idle response some, that would be the NFLQ or NFLP (5TA-14916-L1 or 5TA-14916-LP).  These have smaller diameters in the upper straight portion, which makes them a half and a full step richer, respectively, in the 1/8 to 1/4 throttle range.

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