buddy wants to know what spark plugs he should use on his 347 hes building. It has a Vortech SQ trim @14psi, TW heads, TF intake, Kenne Bell custom grind cam, #42 injectors(might go 50), and he has a new PMS to tune it. He also has MSD ignition. The compression of the motor is gonna be around 9.2- 9.8:1 I believe.
what plugs would you suggest? Thanks.
what plugs would you suggest? Thanks.