rochhound

i have a 86 c4 with about 20.000 miles on the motor. one of my plugs has fouled so im going to replace them,also plug wires.
the plugs in the motor were ac delco r43ts im looking for a plug that doesnt go through the roof in cost but will do the job my motor is stock.

thanks steve

Cjunkie

NGK UR4, stock #6630

Joe C

edit: I am in error. NGK 6630's are for iron head SBC - Cjunkie is correct -

from what the OP has presently in his engine, delco r43ts, indicates an iron head L98. NGK UR4 6630's if i'm not mistaken, are for aluminum head cars. my 2-cents - NGK 3547 #UR5GP plugs, about 2.20 each...

http://www.rockauto.com/en/moreinfo....041219&jsn=564

Tod Stiles

I have AC Delco in there right now but have used NGK on many, many cars. I don't know what they do at NGK but they really seem to make superior spark plugs.

Cjunkie

The plug I listed is for an IRON head L98. Your information is mistaken.

Joe C

I stand corrected - sorry -

don't know how I got that screwed up, but then again, $hit happens! I've corrected my original post -

rochhound

thanks guys for info