Modified Chevy 604 Parts

Learn all about what is a 604 crate motor and what it takes to run this small block Chevy in your race or street car.

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Decode small block Chevy engine suffix codes and block casting numbers with our SBC decoding info guide. Learn how to find and decipher your small block Chevy engine codes quickly and easily!

Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. We’ll help you determine the correct flexplate for your Chevy engine in this buyer’s guide.

In this Tech Tip, John advises a customer on the parts needed to slip a small block Chevy engine in his 1953 Chevy 3600.

Identify SBC heads using casting numbers, style tips, and year-by-year guides for your small block Chevy engine projects

Learn how to successfully upgrade the cooling system for a 400 small block Chevy. Read tips for installing a water pump and auxiliary coolant lines using fittings and fuel hoses.

Tips and tricks to pull the most from your GM 602/604 platform.

Small block and big block Chevy engines were designed with two styles of water pumps, short and long. Before you purchase a new pump, it's important to determine which oneyou have.

Learn the differences between Chevy 2-bolt and 4-bolt main blocks, how to ID them, key years, and whether a 4-bolt is worth it for your build