66-67 Dodge Charger Source Guide

Intake Manifold Casting Numbers

Posted by Mike on 01/10/08

You can look up (the meaning of casting numbers on intake manifolds by) using a guide like the one found here: www.mymopar.com/intakecastnumb.htm

Intake Manifold Insulation

Posted by Al on 06/13/03

Performance Car Graphics says: "Bet you didn't know your 361-383-426W-440 engine originally had noise insulation between the intake manifold and the pan! Used on ALL VERSIONS of these engines, silencer package #1879747 is two pieces of fiberglass insulation wrapped in tin foil, as original."

Posted by David on 06/16/03

My local Mopar guru uses a thin board of asbestos wrapped in tin foil to provide insulation and still allow air to circulate between the valley pan and the intake itself.

Intake Manifold Q & A


Ken Westerlund: Anyone running a Edelbrock Performer RPM manifold? I am thinking about changing from a stock four barrel to the Performer RPM and I want to know if I am going to loose any bottom-end torque or MPGs. The engine is a stock 440 with dual exhaust and a mild cam.


Bruce Blum: You may lose some low end and idle smoothness with a Performer RPM...its power band starts at about 1500 rpm's. You will gain top end with it. With a 440's natural torque you may not notice any change with the new manifold.

I have a 383 with a standard Edelbrock Performer and Edelbrock carburetor. It's essentially a stock intake made of lighter aluminum. I'm quite pleased with how it runs, but I don't run it for competition, just smooth running.