Inliners International Forums General Discussion Engines The right carb for a 292

67chev,

Jets are stock "out of the box". The step-up springs are the "Orange" 5" hg and the metering rods are #1427.

This is what Edelbrock recommended when I described my "off-idle" stumble. It fixed the problem and I haven't done any further tuning. Your results may differ. There is a lot you can change on any carb, it's a trial and error routine.

My best MPG was about 13-14 highway with 3 model B Rochesters on a McGurk log intake. City driving was horrible, about 9 MPG. Changing to the Edelbrock 4-barrel on a CLifford intake increased this to about 12 city, and 18 on the road. Still not great, but a big improvement.

According to the formula above a 500 CFM Edelbrock would probably work as well as the 600 (maybe better) for a 302 that rarely sees 5000 RPM, but the 600 is actually cheaper if you want the electric choke version. BTW, the Edelbrock "Performer" carbs are just Carter AFBs under another name.