The opti spark is the 'distributor' on the LT1/4 engines. It sits perpendicular to the engine front cover. It resides below the water pump and is driven off of the cam shaft. It is a bear to change and is usually changed during the installation of a new water pump that usually happens around 50 to 70k miles.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.