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Tag Archives: LS intake

Speed Secrets: 408 Fast Intake Test

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Single plane carbureted intakes are notorious for making big peak power, and the Fast LSXR intake is the best of the best when it comes to LS EFI applications, but how do the two compare? To find out, on an episode of Speed Secrets Richard Holdener and the guys from Fast stage an intake shoot out. For a test engine, ... Read More »

Speed Secrets: What’s So Great About the FAST LSXR Intake?

Speed Secrets: What’s So Great About the FAST LSXR Intake?

When GM designed the LS1 engine, they didn’t give it an intake to do it justice. Thankfully, FAST came up with a solution. Richard Holdener explains the magic behind the FAST LSXR intake in this episode of Speed Secrets. Of all the intake manifolds GM has produced over the years, the LS1, the beginning of arguably the best GM engine ... Read More »

Fast Under Boost: LS Intake Test Part 2

Run with the FAST, the normally aspirated 5.3L also produced 486 HP, but at 6,800 RPM. Torque production was up with the FAST intake, to a peak of 425 lb-ft at 5,000 RPM.

Words & Photos By: Richard Holdener Back in Part 1, we compared a couple of popular intake manifolds on a normally aspirated 5.3L. The FAST LSXR and LSXRT have long been the go-to intake of choice for performance LS applications, but with so many new intakes available, we wanted to see if the FAST design was still a player. More ... Read More »

Fast as Ever: LS Intake Test Part 1

With so many intakes now available for LS applications, is a FAST intake still the hot set up?

Words & Photos By: Richard Holdener For some time now, the LS engine family has been the proverbial hot button of the automotive industry. The LS took the reins from the original small-block Chevy and has never looked back. Even after the introduction of the direct-injected, Gen V LT engine, the LS remained the engine of choice among Chevy enthusiasts, ... Read More »