The NGK R5724-10 (7993) is a heat range 10, but it is a protruded tip plug, do they make a NGK in a 10 heat range that is a Non-protruded tip plug? if so please whats the part # for a LS style head, or what are you N20 guys running for a 10 non-protrude plug?....Thanx.

 

NGK R5724-10 (stock number 7993)

or

Autolite AR92



possibly B10EFS?

 

Those plugs have protruded tip, I am looking for a 10 in a NON-protruded tip plug.

 

B10EFS shows as a non-projected tip plug with a heat range of 10.

 

I know of some nitrous guys that still use that projected heat range 10 when it's really cold outside.

Turn the timing down a 2*-3* and use this plug again only when it's cold and the DA is really really low as in - numbers.

B10EFS is the non projected tip -10 NGK.

I wouldn't use an Autolite unless you are familiar with the way they read.

 

this is the plug I use NGK R5671A stock #5820 HEAT RANGE 10