NGK spark plugs..
 

Looking for the part number for the NGK plugs you guys recommend for the 1970 L78 motor....saw this once before.

thanks, wilma

Re: NGK spark plugs..
 

this is what I found in a search
the 5671 is for the 840s, the UR5 is for the 291.
hope this helps

Re: NGK spark plugs..
 

Tom, I run the UR5 in my motor in the Nova, 70 L78 Motor. Thats the correct plug for that motor. They are great!! Really woke the combustion chamber up.. I was using the new AC Delcos and they were junk. I was getting a surge in the RPM range at about 3,500. I put the NGK plugs in and it made a huge difference, much smoother at idle and strong the through RPM range.. I highly recommend them!! You can pick them up at Advanced Auto Parts. Thats were I got mine last summer. I think they were like .95 cents a plug.. Well worth it!!

Rich

Re: NGK spark plugs..
 

What about aluminum heads? I'm running NGK's in my iron heads. Can I reuse the same plugs?

Re: NGK spark plugs..
 

Yeah UR5 rings a bell. NGK only in my cars...

Re: NGK spark plugs..
 

I ran across this NGK link the other day and saved it

http://www.ngksparkplugs.com/about/i...amp;country=US

Re: NGK spark plugs..
 

What about the gap...??? that web link shows .060....what do you guys set them at..??

wilma

Re: NGK spark plugs..
 

Tom;

Set them at .035" if the car still has an OE points style distributor.

Eric

Re: NGK spark plugs..
 

thanks.... https://www.yenko.net/ubbthreads/imag...iggthumpup.gif

Re: NGK spark plugs..
 

Coitenly!

http://www.nndb.com/people/973/00004...etas_curly.jpg