What is the benefit of getting a 9 inch rear end. I have a 69 Mustang Coupe with 302 Boss motor with new intake, headers, exhaust, and carb. When I drive over 45mph rpms seem a little high but doesn't shift past that. The man I bought it from said the rear end will help that problem. He also said the rear end is holding it back. Is this true? Please leave me a detailed answer. I'm a tech guy not a mechanic. Please help!
1969 Ford Mustang 9inch rear end?
- Thread starter face
- Start date