Here's why:
* 153 teeth: This is the standard for most small-block Chevrolet engines from that era, particularly those with a manual transmission.
* 168 teeth: This is more common for later model small-block Chevrolets and is often used with automatic transmissions.
To confirm the tooth count, you should:
1. Look at the flywheel itself: If the flywheel is accessible, the tooth count should be stamped on the face of the flywheel.
2. Check the transmission: The starter and transmission have matching tooth counts. Refer to your transmission service manual for the tooth count.
3. Consult your engine's service manual: It might list the standard flywheel tooth count for your specific engine.
Note: The tooth count is crucial because it determines the starter motor compatibility. Using the wrong tooth count can lead to the starter not engaging with the flywheel.
