Motor Trend

Edelbrock RPM Air Gap LT1 Intake Manifold Testing - Top End

For years LT1 enthusiasts have been running well into the nines with factory LT1 and LT4 intake manifolds. With some porting the factory castings have proven capable competitors, even on big-cube and ...
Hot Rod

Edelbrock's Air Gap Performer Intake Manifold - The Street Game

Although good for its day, the original Edelbrock Performer intake--as tested in the January 1982 issue of PHR--still appeared to be based on design philosophies of the mid 1950s. The thinking of the ...
Motor Trend

Edelbrock LT1 Cylinder Head, Cam And Intake Manifold Test - Top End

In our last installment, we visited RaceKrafters Automotive Machine in Lancaster, PA to test the Edelbrock RPM Air-Gap LT1 Intake Manifold on a nearly stock 355cid LT1. Using a much smaller plenum ...
Hot Rod

Differences In Power - Edelbrock’s RPM Vs. Air-Gap

We've often said the Edelbrock RPM Air-Gap dual-plane intake manifolds are the best choice for carbureted engines under 6,500 rpm and sometimes up to 7,000. In previous testing we noted that the RPM ...