Have built a 400/400 and mounted in frame. Need to hook-up fuel line and battery to crank. Too much money to miss any particulars. The engine is bored .030 with new pistons and rings. Rods are re-conditioned with new rod bolts. Every thing is balanced with mild cam that should lope a little and using 1800 to 2200 stall converter.
Heads are re-worked with all new valves and stronger springs. New oil pump (naturally) and primed before installing. Spent about two weeks on assembly and checked clearances with plasti-guage and checking ring gaps. Correct torque on every bolt and valve lifter/cam lube applied very generously. Spun pump with drill untill all rockers started oiling. Put repair sleeve on vibration damper to aid front seal. Adjusted all valves and topped it off with a new Edelbrock highrise with 600 cfm carb (I know the carb is a tad small but I'm not trying to set any records). I'm using stock electronic ignition at the present time and may go to a racing brand later. What I would like to get some feedback on is, what spark plug would be best for best performance with this engine? I have a set of R45TS but I can use them in a 305 that I am building stock if there is a better plug out there. Appreciate any info or suggestions.

Truck Tinker