NGK Standard Spark Plug - 14 mm Thread 0.500" Reach Gasket Seat - Stock Number 3133 HS210020 Intake and exhaust ports based

Intake and exhaust ports based on 2V design

COMP Cams developed Two-Piece Adjustable Guide Plates for high performance Big Block Chevy engine applications

For Use w/Flat Tappet and Hydraulic Camshafts

All headers are a direct fit bolt on replacement when used with the correct matching mid-pipes which are available with high flow catalytic converters and in off road race versions

NGK Standard Spark Plug - 14 mm Thread 0.500" Reach Gasket Seat - Stock Number 3133 HS210020 Intake and exhaust ports basedProduct Description: Spark Plug NGK Standard 14 mm Thread 0. 500 in Reach Gasket Seat Stock Number 3133 Resistor Sold Individually With over 80 years of automotive expertise, we are driven by extreme dedication to performance and quality. From OEM to aftermarket, our people push the boundaries of innovation to bring the latest technologies to market under the NGK and NTK brands. Since 1936, NGK Spark Plugs has been the world leader in technology,