maverick0716 said:Oh, ok. I just assumed they would be the same difference as with the carbureted versions. On the carbureted version the regular Performer has smaller ports than the RPM.
actually for informational purposes only...don't want to start a war here...the RPM lower has slightly larger ports...1.05" by 1.88" and the regular Performer is 1.02" by 1.85"...not enough to notice but there is a slight differene...upper is what is the major difference...
http://www.edelbrock.com/automotive/index.html
under intake manifold/ford