Category Archive: 1320 Engine Tech, 1320 Tech Story, Apex Engine Tech, Apex Tech Stories, ENGINE, ENGINES, TECH, Tech Stories, Tools, Videos, XL Engine Tech, XL Tech Stories

Daniel and the Crew at Powell Machine Show How To Rebuild Gen 3 HEMI Heads The Right Way. Valve Job, Surfacing, And Removing Broken Bolts

Powell Machine Inc. is known for building some pretty impressive engines, and for being experts in valve train and lifter technology, particularly in those classes of racing that require a flat...

FLYWHEEL VS FLEXPLATE-DOES A LIGHTWEIGHT FLYWHEEL ADD ANY POWER? 45 POUNDS VS 16 POUNDS-WHO WINS?

In a lot of racing, folks are real big on the weight of their flywheels because it effects how the engine accelerates. But on a lot of occasions I’ve seen folks go with the lightest flywheel...

DIY Engine Tech: How To Replace Valve Springs and Do A Budget Refresh On An LS Head At Home.

I know a lot of folks who get a junkyard LS and then start doing upgrades and are intimidated by the thought of replacing their own valve springs or cleaning up their own cylinder heads in general....

CHEAP, HIGH-RPM, 7000-RPM JUNKYARD 4.8L WITH STOCK SPRINGS! STOCK TRUCK INTAKE VS HOLLEY HI RAM TEST

No Springs Required. These are the magic words for so many folks interested in upgrading the camshaft in their LS engine. Cams aren’t cheap, and either are springs, plus most folks don’t...

Tearing Down The Blown Up K24 Swapped StanceWorks Ferrari After A Bad Day Of Racing That Threw The Rods Out Of It.

I’ve only blown up a couple of engines in my day, but when you do there is always the disappointment of tearing stuff up, but then once you get over that there is the desire to tear it apart...

HOW MUCH POWER DO ACCESSORIES ROB FROM YOUR 4.8L LS MOTOR? STOCK ACCESSORIES v ELECTRIC WATER PUMP!

So how much power does it really take to spin the accessories on your LS engine? Is an electric water pump actually giving you real horsepower gains? How about that alternator and power steering? Or...

DIRT CHEAP, $100 4.8L LS BOOST! JUNKYARD V6 M90 BLOWER TO THE RESCUE! IT FINALLY WORKS ON THE 4.8L!

$100 Supercharger for your LS engine? Wait, what? Has Richard lost his mind? Or will this actually work? The answer might surprise you. Sure it is going to take a little bit of work, but if you are...

Derek Got Ahold Of This Beast At An ESTATE SALE! Cadillac EFI V8-6-4 – Will it RUN AND DRIVE 500 miles after sitting for 12 years?

My dad worked as a Service Advisor at a Cadillac dealership in the late 1970’s and 1980’s and I remember the 4-6-8 Caddy engines. They sucked. The mechanics and service guys all bitched...

Dyno Testing: CAMARO VS MUSTANG, WHICH MAKES MORE HP STOCK AND MODIFIED? 5.0L COYOTE VS 6.2L LS3, CRATE VS CRATE

The age old battle between Chevrolet and Ford will end no time soon, and we love it! And within that rivalry, none is stronger than that of the Camaro vs Mustang. These two pony cars are the best...

MOST POWERFUL LS3 INTAKE EVER? SUPER RICHIE DUAL-PLENUM, ADJUSTABLE RUNNER LENGTH AND PLENUM VOLUME

One thing some of his casual fans may not realize is that Richard Holdener has not only done all the testing and tech stories for magazines and websites for decades, but has also done a LOT of...

COYOTE VS JUNKYARD LS-WHICH MAKES MORE HP? 5.0L YOTE VS 5.3L LS, STOCK, HCI MODIFIED AND HIGH RPM!

If you take brand loyalty out of the equation, can you really put an LS and a Coyote up against each other head to head to see if one of them really is a better engine than the other? In this video...

THE ULTIMATE JUNKYARD 5.3L SHOOTOUT. 512-HP 5.3L VS 542-HP 5.3L-WHICH ONE REALLY WORKS BEST?

If all you knew about these two engines was the final peak horsepower number, there isn’t anyone reading who wouldn’t choose the 542 horsepower 5.3 in this stock bottom end NA shootout....

JUNKYARD LS MONSTER MAKEOVER! HOW TO TRANSFORM YOUR JUNKYARD 5.3L INTO A 7,700 RPM, 542-HP DEMON!

A stock bottom end 5.3 that makes 100 horsepower per liter? Yep, and the recipe is right here for you to check out and duplicate with your own junkyard 5.3. Plus it spins 7,700 RPM! Check out what...

WHAT IS THE BEST LS INTAKE UNDER BOOST? SINGLE PLANE vs DUAL PLANE BLOW-THROUGH DISTRIBUTION TEST!

I’ll never forget the first time I was in a dyno cell while testing an engine with 8 oxygen sensors. Instead of just having one or two, which is the norm on most of what we work on around here,...