65 shot
 

I am about to throw on a dry Zex kit with a 65 shot. It will have two stop colder coper core ngk's. My question is will I need to worry about retarding timing 2 degrees like recomended or worry that it will lean out? I'm not too worried about it leaning out cause it already runs a little rich like most ludes with intake and full exhaust but just want to make sure.

i'd retard the timing, some people spray that size shot w/out retarding it and they're fine. look into the msd digital 6 for a.) a soft touch rev-limit(i.e. it cuts spark not fuel like the factory rev-limit, which can be very bad when spraying) b.) you can wire it in with the nitrous so that it will automatically retard timing only when your spraying.