71 Torino, 351c-2v, .60 over spark plug gap
Yeah stock is 30 to 35 thou.
But how much gap you can run is totally dependent on the whole ignition system, the better/stronger the ignition system the bigger the gap. To the point where the holden commodore with the (chev) 5.7 has a coil per plug and spark plug gap of 1.4mm...thats pretty big.
1991 GQ Patrol 351c CHI Aluminum heads, Funnelweb manifold, Biggs 750 HP DP Stage 5 246/256@50 4inch suspension lift, 2inch body lift, 33inch muddies 6 point rollcage.