The blacktop has lighter internals that happen to be also weaker, but it's kind of quicker. No damage if you're not executing any big mods, but any forced induction and you'll be needing to uprate the blacktops internals.As a result they aren't interchangeable concerning one another unless the matching VVT pulley can also be equipped, for instance

16V and Silvertop engines all use a rubber dampener between the middle Element of the principle crank pulley and each of two outer pulley rows. The Blacktop Alternatively only has dampening about the pulley row which is around the facet nearer for the engine, as a result the outwards going through row on the pulley which is the one that most likely