This damper is dimensionally the same as the 1969 through 1979 stock damper. To fit this damper on a 1961-'68 engine requires the use of '69 or later timing chain cover, water pump and related accessories. These parts are available from wrecking yards or Year One at 800-950-9503. This damper has the stock accessory pulley bolt circle plus a BB Chevy accessory bolt circle.

This is an externally balanced damper with a bolt-in counterweight. This damper will work on 350/400/455 cubic inch Olds V8 engines. This damper has the stock accessory pulley bolt circle plus a BB Chevy bolt circle. Some minor machining is required to use Chevy pulleys. This is a very affordable high performance race damper that can also be used on street applications.