VIDEO: Boosted and LS-Swapped ’87 Grand National
Ray Lichtenberg builds an awesome blown and LS7 powered 1987 Buick Grand National, as featured here at LS Fest West 2022.
VIDEO: TRX vs. Raptor vs. R1T vs. Syclone (Sorta)
It's the latest and greatest muscle trucks facing off, with a dash of nostalgia thrown in!
VIDEO: AWD Turbo GMC Syclone at Holley LS Fest East
This GMC Syclone is LS swapped, but still retains a its AWD and a turbocharger.
VIDEO: Hagerty Dives Into the GMC Syclone
Hagerty takes a closer look at the one-time fastest truck ever made.
Announcing the 2021 750HP V8 AWD Syclone From SVE
SVE announces their latest version of the GMC Syclone!
SVE Announces their Version of a 2019 Syclone — with ...
Specialty Vehicle Engineering has announced a new twist on the GMC Syclone, with their modern 455hp version!
GM EFI’s Guide to Buick Turbo Regal
Everything you wanted to know about the '78-87 Buick Turbo Regal!
Car Feature: Throwback Impala SS
The Owner's Love for the Impala SS Goes Way Back!
Car Feature: Black Switchblade S10 Xtreme
Building upon the Xtreme theme, this S10 is no ordinary pickup. What's so sinister about this 2002 S10 Xtreme? Read more to find out!
VIDEO: Crew Cab GMC Hurtin’ Feelings!
BigKleib34 catching this spooling' GMC Sierra in action!
eBay Find of the Day: GMC Typhoon Prototype
We spotted this 1991 GMC Jimmy Typhoon Prototype on eBay the other day, and it's defiantly an affordable way to acquire a piece of GMC performance history!
Former GM EFI Feature Colorado Hits Mecum
This beloved former feature Colorado is up for grabs, through our friends at Mecum Auctions!
Car Feature: The Hated Syclone
Crafting an LSX-swapped GMC Syclone into the most flattering form of blasphemy.
VIDEO: Turbo LS-swapped Syclone Lays Waste to… Everything
This LS-swapped Syclone lays waste to everything in its path!
GM EFI’S Guide to the GMC Syclone and Typhoon
We take a closer look at the GMC Syclone and Typhoon.
VIDEO: Upgrading a Turbo ATS with a CORSA Catback
We upgrade the stock exhaust of a 2014 ATS turbo with one from CORSA Performance!
VIDEO Jay Leno Takes a Drive in the 2016 CTS-V
Jay Leno takes the 2016 CTS-V for a spin in a segment for Jay Leno's Garage!
VIDEO: AWD Syclone Blasts its Way to the 9s!
The world's most elusive man owns this 9-second Syclone. Watch the launch as all four wheels slingshot this beast to the other end of the 1320!'
VIDEO: This GMC Canyon Features A Boosted 5-cylinder Powerplant!
Looking for something just a little bit different? Then look no further than this boosted GMC Canyon!
eBay Find of the Day: LS2-Powered Syclone Pro-Street Truck
We just spotted this LS2-swapped GMC Syclone on eBay - with NO RESERVE!
VIDEO: Mr. Syclone Just Doesn’t Quit!
The fastest Syclone in the world still shakes up its Swedish locals after twenty years.
VIDEO: One of None Typhoon-C Takes on All Competitors
This one-off custom Typhoon takes on all comers in this recent video.
VIDEO: LS1 Sonoma GT with a Rear-Mounted Turbo
This 1-of-806 1992 Sonoma GT has waved bye-bye to its naturally-aspirated 4.3L V6, for something a bit more unusual. And brutal.
Reader’s Rides: January 2015 Edition
We put together four new Reader's Rides for the month of January 2015!
VIDEO: Jay Leno’s GMC Syclone
Take a tour of Jay Leno's personal GMC Syclone in this recent clip of Jay Leno's Garage!
Video: Meet The 500 AWHP HIllclimbing Psycho Syclone
The Psycho Syclone surfaces right here on GM EFI in this #TBT segment.
Charging Forward: The Shortlist
Editor Rick Seitz narrows down his Top Five factory-produced, GM EFI-era vehicles of all time.
VIDEO: GMC Syclone Runs a 5.61 at 130+ mph in ...
This example weighs in at 3,890-lbs. and runs on E85. The boosted 6-cylinder pulls 1/8-mile times of 5.61 seconds and traps at over 130 mph!
VIDEO: 90’s Flashback – Jeremy Clarkson Tests the GMC Syclone
If you were to rewind the clock all the way back to 1991you would find a very different version of Top Gear UK. One with a largely unfamiliar cast, and one that featured plenty of ...
A Closer Look At GM’s 4.3L LV3 V6
Back in the mid-1980s, General Motors released a small, reliable, torquey, and somewhat powerful 4.3L V6 version of its small-block V8 as an economical and cost-effective solution to utilitarian vehicles. Being installed in a varying ...