Our SB Ford Dampers are all made to the 1963 to 1969 length. This allows the use of both early and late style dampers in early chassis. You can use our late 5.0 damper with early three bolt pulleys and accessories. All of our SB Ford dampers also have both the three and four bolt pulley patterns.
They also have three sets of timing marks to suit all SB engines. If your stock damper is longer than 3 Inches, we make up the difference with a series of spacers. To determine which spacer you need, measure the length of your damper. Our standard spacers are made of aluminum and are very inexpensive.
If you have a 5.0 Liter engine running a belt driven blower, we recommend that you use our Steel Spacer instead of the aluminum one.