Chev plug question

[350RRC]

Hi,

Haven't changed the plugs in my POS for at least 50k kms and found some old ones, NGK BP6(6 I think) FS and the same ES. FS have the longer thread length. ES are in it at the moment (eon).

Runs on gas all the time........... which should I really be using?

TIA (bee utey :D ), DL

[bee utey]

Hi,

Haven't changed the plugs in my POS for at least 50k kms and found some old ones, NGK BP6(6 I think) FS and the same ES. FS have the longer thread length. ES are in it at the moment (eon).

Runs on gas all the time........... which should I really be using?

TIA (bee utey :D ), DL

Whatever works best for you, I don't normally fit NGK, so don't have experience with their suitability. Are they taper seat or flat seat? Chev heads vary a bit over the years.

[350RRC]

Taper seat on both varieties. One is long thread, the other is short.

There must be some advantage with one or the other. Have had all good experience with NGK.

thanks Jilden, DL