Chevy Big Block V8 Mark IV 402 L34 Cylinder Block Components

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

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.

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!

How to maintain coolant temperature for a Big Block Chevy engine. Installation instructions for a double pass radiator and electric fan in a 1954 Chevy Bel Air.

Kevin W. walks through each step of installing a new alternator bracket on a 454 Big Block Chevy.

How to install a chrome radiator hose kit and aluminum thermostat housing on a big block Chevy for an added touch to your engine bay.

In this follow-up installment, Speedway Motors employee Tim M. continues his journey to revive his 241 Hemi destined for his '29 roadster build. We pick up as Tim prepares to drop his disassembled long block with a machine shop to be inspected.

Engine Cylinder Numbers