I have a 70 ls-5 10.44 cr,stock heads,hi rise w/700 dbl pumper,.544 ,.544 lift,230 230 dur, 6al msd with blaster 2 coil,pro billet dist.,4spd,3.73 rr. could anyone recomend a good plug and what gap?Thanks.

Those heads require tapered or gasketed plugs?

Gene, Im running Autolite APP 24 platinum tapered plugs ,not sure what the gap should be with the msd verses the old stock ignition.Thanks.