Frank Enstein
Best. Day. EVER!
Small Block Vortec heads take a .708" reach, taper seat, 5/8" hex spark plug.
I recommend these;
I recommend these;
NGK Spark Plugs TR55GP NGK G-Power Platinum Spark Plugs | Summit Racing
Free Shipping - NGK G-Power Platinum Spark Plugs with qualifying orders of $109. Shop Spark Plugs at Summit Racing.
www.summitracing.com