L-72 spark plugs
 

Finishing up my motor and need to put some plugs in it.What do you use..brand..number. Motor is all stock but for a small solid roller(under 600 lift). Thanks

ALbert

Re: L-72 spark plugs
 

Autolites for cars..like one guy said to me one day when I questioned them going in a Chev and he said good enough to go 9's good enough for the street...NGK's for the two stroke stuff.

Re: L-72 spark plugs
 

NGK's all the way...the dyno doesn't lie... https://www.yenko.net/ubbthreads/imag...ns/burnout.gif

Re: L-72 spark plugs
 

Ran them forever they don't lie on the track!! https://www.yenko.net/ubbthreads/imag...mlins/flag.gif

Re: L-72 spark plugs
 

Alright then NGK's it is..what number do you guys use? Is it a crossed over stock one or something else. Thanks again.

Albert

Re: L-72 spark plugs
 

In our 840s we run plug R5671A-7...

Re: L-72 spark plugs
 

Thanks

ALbert