I just installed some Edelbrock E street aluminum heads and they recommend Champion RC-12YC spark plugs. These are quite long and not a lot of header clearance. Is there a spark plug with a shorter porcelain part that any of you would recommend that will fit these heads? Thanks
Check out the AC Delco equivalent plug and see if it's any shorter.
1973 L-82 4 spd
You might look at a set of ACCEL spark plugs. They make a shorter porcelain plug that is made for headers. I installed a set on my '79 L48 and they run fine.
Thanks , I did end up buying shorty plugs from Accel.