Chevy 350 has 4" bore size.Chevy 400 has 4.125" bore size.
Most sets available in oversizes030, 040 and 060.
What personally identifiable information is being collected? You may be asked to provide us with personally identifiable information when you visit the Speedway Motors website in order for us to provide you with the products or services that you have requested. For example, when you order a product we may ask you to become a registered user of our site. You will be asked for your shipping and billing addresses, your email address, and your credit card number or other payment-related information. If you request one of our newsletters or send an inquiry to one of our customer service representatives we will store a record of your request along with your email address. Additionally, our web servers track various technical details about your visit, such as your computer's IP address and which pages you visited. That information does not typically contain any personally identifiable information about you. How is the information being used? The information we collect is used to provide the products and services that you have requested or in which we think that you might have an interest. It is also used to improve the content of our website, to notify you of problems with your requests, or to update you about changes to our website. This is an abbreviated portion of our Privacy Policy. The entire version can be read here.