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I use a ZEX dry kit with 60lb injectors. Works great. 347, AFR 185s, TFS stage 3 cam, handles it great. Have it with a single walbro 255. have also boosted the motor with 6 psi and a 125 shot and was able to keep 11.5:1 easily on the dyno. The 60s will handle 700hp at only 85% duty.
 

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Thanks PilotGuy. I wasnt sure how the AFRs would respond when the nitrous spikes the fuel pressure regulator. I know the kit was originally intended to use 19lbs. I read the sticky and saw the jets have been figured out for 24s, 30s, 42s, but I didnt see anything regarding 60s. Did you have to experiment with jet sizes?
 

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Rule of thumb on the NOS 05115 Dry kit

For every 6lb increase on the injectors, increase the fuel jet about 4. So from 42lb injectors to 60lb injectors, increase the fuel jet by about 12 sizes.

So say you want to run a 150hp shot with those 60lb injectors, use around a 72 fuel/73 nitrous depending what jet sizes you can locate close to that. Tweak from there.
 
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