; Upper cylinder wall distortion is greatly reduced when these 3/4 NPT plugs are installed in the water passage holes in the decks of Small Block and 90° V6 Chevy engines; Water holes must be tapped before the plugs are screwed in block must also be decked after installation; Plugs also restrict water flow to the cylinder heads by reducing size of water passage holes to 5/16; Packaged six to a kit
- Small Block/90˚ V6 Chevy
- 3/4NPT plugs
- Reduces upper cylinder wall distortion
- Must tap water holes before screwing plugs in
- Must deck block after install
- Plugs restrict water flow to cylinder heads by reducing water holes to 5/16
- 6pk