Hi Folks,

In searching I've found a lot of conflicting opinions/information, most of which is 3+ Years old, so I wanted to get an up to date response on this.

I have a set of RC550cc Injectors (Part Number: SL4-550) that I picked up a few years back for my build at a price that I just couldn't refuse.

I'm getting ready to install them as part of the build but (I was aware of this when I bought them) they aren't compatible with my Fuel rail (And possibly the Intake manifold as well).

The Intake manifold is the Edelbrock PerformerX (#4774) and the Fuel Rail is the BDL Fuel rail.

Question is, what do I need to use these injectors, are there adapters? Do I need to buy a tap to enlarge the openings on the Fuel Rail?

Any help you guys can provide would be great as this project is coming together quickly.

Thank you!