Underhood Automotive
Engine Build: Turbocharged 6.7L Powerstroke Engine

Caranci Performance Diesel recently built the ultimate tow rig — a 2017 F450 with a 6.7L Powerstroke diesel.

Gapping Spark Plugs

For modern fine-wire spark plugs, you should not measure the gap unless instructed by the manufacturer.

Engine Build: Toyota Supra B58 Inline 6-Cylinder Engine

Boasting 335 hp from the factory, find out how Stephan Papadakis tripled the power output!

Engine Build: Twin-Turbo 508 cid LSX Engine

This Pontiac Trans Am drag car has nearly 1,900 horsepower coming from its twin-turbo 508 cid LSX engine.

Engine Build: Roots Blown 540 cid Big Block Chevy Engine

Check out this Roots blown 540 cid big block Chevy Hilltoppers Speed Shop recently built for a street rod.

Engine Build: 434 cid Dirt Late-Model LS Engine

Blue Chip Racing Engines builds high-performance engines. Find out what went into this build.

Import Transmission Upgrades

It’s crucial to use a transmission with enough torque capacity and proper gearing for the application.

Engine Build: AJPE 521 cid ProCharged Hemi Pro Mod Engine

After a recent crash at the NHRA U.S. Nationals, Steve Matusek of Aeromotive was fortunate enough to bounce right back.

Engine Build: 383 cid Turbocharged LS1 Engine

Find out what went into the build of this 383 cid LS1 engine that a customer wanted to turbocharge.

Subaru HVAC Diagnostics

On some more modern Subaru vehicles, you might be better off grabbing your scan tool.

Engine Build: 3.0 Class 6.6L Duramax Engine

Paulhamus Diesel Performance does everything from regular maintenance and repairs to full performance engine work.

Fuel Pumps And Voltage Drop – Still A Valid Test

Voltage drop testing compares the battery or charging voltage to the voltage at the component.