plugs?

[DNELSON]

i am looking for some opinions on plugs. i have been running ar3933 on a sbf w/ a 250 shot. we built a new sbf with the plans of 2 kits with a total of 400-450. i am thinking of switching to a ngk plug and need opinions on heat ranges 8,9 or 10. thanks for your input.

[Scott Wasko]

My preference is the Autolite 3932. If you go NGK, go with R5671a-10.

[Jim Monson]

I like the NGK 10's.

[81 olds]

i like ngk also

[beebemotorsports]

I like the NGK 10's.
me three

[Ken Cooper]

10's or 11's that what Prock told me to use!

[DNELSON]

thanks guys.