Quote:

Plug gap is dependant on cylinder pressure/voltage , those cut-back plugs are/were 'marketed' for high HP motors running high cylinder pressures , hence the tighter gap.............some guys on here running NGKs will be pulling em out & cutting the straps back , will also go through two sets of cut-backs to one set of standard type plugs...........maybe the cut-backs worked better in you're application due to problems elsewhere , might not gain in every application , the NGK 'V' series plug definatly did'nt help regards my combo.

With respect.



I never seen the V or 4 point grounds do anything for
power but did get a lot longer life out of them...
I had a set given to me for my street rod(I would
have never bought a set)... same principle ... electricity
goes to the easiest ground path