Articles written by: Richard Holdener

Richard Holdener is a technical editor with over 25 years of hands-on experience in the automotive industry. He's authored several books on performance engine building and written numerous articles for publications like Hot Rod, Car Craft, Super Chevy, Power & Performance, GM High Tech, and many others.

Tech Articles

Dyno Test: 120+ HP Gains and No Low-End Loss with Cam Swap on 6.2L LS Engine

by × on December 26, 2019 at 11:17 am × 3 comments

Why were we so excited about swapping cams on the all-aluminum L92? Many reasons. The first was that we had previously run the Summit Stage 4 Pro LS cam (SUM-8711) […]

Tech Articles

Dyno Test: Adding 120 HP with Cam Swap in Turbo LS 5.3L

by × on December 12, 2019 at 3:51 pm × 0 comments

LS engines respond well to cam swaps. It’s probably the #1 upgrade for any LS, because the gains can be dramatic. The reason is that the LS engine family, from […]

Tech Articles

Clash of the Turbo Titans: Summit vs. eBay Turbos

by × on November 27, 2019 at 3:37 pm × 7 comments

Turbos rule. If you’re a turbo guy (or gal), there has never been a better time to be an enthusiast. Just look around, turbos are everywhere and on everything. Not […]

Tech Articles

Truck Cam Swap Testing to Add Low-End Torque

by × on October 31, 2019 at 12:26 pm × 10 comments

The LS engine remains the darling of the performance world, but does that mean all LS owners are looking for the same thing when it comes time for upgrades? Obviously […]

Tech / Tech Articles

Four-tify Your LS: Summit Racing Stage 4 Pro LS Camshaft Test

by × on July 4, 2019 at 9:45 am × 2 comments

So what would you do if a company called you and offered up a 5.3L test motor? Now what if these same guys gave you their blessing to throw the […]

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