for stock 68 307 with HEI. should it be the stock plug with a wider .45 or .60 gap (cant recall exactly)...or should it be like a 1975 HEI spark plug for a 350ci for example ??
...should have asked years ago....currently running accel shorty plugs with .45 or .60 gap (cant recall exactly) and no probs, however curious to know....thx
...should have asked years ago....currently running accel shorty plugs with .45 or .60 gap (cant recall exactly) and no probs, however curious to know....thx
