Spark plugs?

[tomtbone]

Building a 454 big block, pre -1980 not sure about what spark plug to use for good performance, , washer style.
Thanks, Tom.

 

[DozerII]

I have never had any luck running Champion in a GM have always found AC or Autolite very reliable.

 

[redidbull]

I almost always buy Autolites. Always use them in American cars but the Japanese cars seem to run better on NGKs. Jim

 

[Dr Crankenstein]

I won't run Champion in a Chevy, either. AC Delco or my personal favorite, NGK V-Power Copper.
.

 

[lowbudget50]

Ac for Chevy auto lite for ford in my shop

 

[Old Iron]

Yep, yep, yep and yep

 

[sneakysnake]

I won't even run a Champion in my lawn mower.

 

[Blue Eyed Devil]

Autolite.

 

[05snopro440]

I won't even run a Champion in my lawn mower.

Agreed.

 

[sgtpontiac]

Run what comes in the car...

A/C Gm...Autolite in Fords, Champion in Mopars.... as for the Foreign ones...whatever they use...use those.... JMHO

 

[tomtbone]

R45 XLS AC Delco is the answer.
Thank you!