MSD Hemi Tube Replacement 8-Pack Black H770003S Results on the dyno of

Results on the dyno of up to 20 horsepower

1982-1992 GMC Jimmy

1962-1970 Pontiac Strato-Chief

Less under hood heat results in a cooler air charge for improved performance and keeping exhaust gases hotter within the exhaust system helps in decreasing exhaust density & increases exhaust flow

MSD Hemi Tube Replacement 8-Pack Black H770003S Results on the dyno ofProduct Description: Spark Plug Wire Tubes Hemi Tubes Plastic Twist Lock Cap Black Set of 8 Racers never stop experimenting as they search for every way to wring out more power or handling performance to to gain an edge over the competition. The team at MSD is no different as we strive to deliver the products you need to meet your performance goals. We continue to innovate and invent components and technology that deliver performance and reliability