Model A & B

Ford Garage

Intake and Exhaust Valve Details

This page details some of the examples on NOS genuine Ford intake and exhaust valves, as well as similar era replacements.

Model A and B valves are interchangeable, and the original A-6505-A part number was changed to B-6505 with the introduction of the Model B Ford in 1932. There was no distinction between intake or exhaust valves.

The pics above and below shows a comparison of two styles of NOS Model A valves on the left, and the comparable unmarked era replacements made by Rich on the right.

The table below details the magnetic properties of various valves and their components.

Part Number Style Description Head Stem
Ford
A-6505-A
B-6505
Smooth stainless head
Stamped Ford script marked "R"
Slightly magnetic Some magnetic
Some non-magnetic
Rich
V600L
Smooth stainless head
Unmarked head, number on stem
Slightly magnetic Magnetic
Ford
A-6505-A
B-6505
Indented dish head
Forged Ford script marked "R"
Magnetic Slightly magnetic
Rich
600
Indented dish head
Unmarked head, number on stem
Magnetic Slightly magnetic

More related web pages on Ford Garage:

  1. Model A & B Valve Push Rod Discussion
  2. Model A & B Valve Tappet Adjustment ~ Rule of Nine
  3. Model A & B Original Ford Camshaft Details
  4. Model A & B Bill Stipe Camshaft Specifications

March 2017