Ask Away! with Jeff Smith: The Best Flexplate for Mating a 1994 5.7L LT1 to a TH400
I have a 5.7 LT1 from a ‘94 Trans Am I want to mate it to a ‘79 TH400 transmission. What flexplate do I need? This has been a very […]
Ask Away! with Jeff Smith: Advice for Replacing or Upgrading an Opti-Spark Ignition on a GM LT1 Engine
I was wondering if there is anything that is out there to get rid of the Opti-Spark Distributor in my 1994 Z/28 LT1 engine? R.P. There are a couple of […]
Ask Away! with Jeff Smith: Will LT1-Style Gen. 2 Aluminum Corvette Cylinder Heads Fit on an Earlier Gen. 1 Small Block Chevy?
Can I use a set of 1992 to 1996 aluminum cylinder heads from a Corvette on an earlier small block Chevy? I have a chance to pick up a set […]
Ranking the Top 5 Small Block Chevy Engines of All Time: (#2) The 1970 LT-1
That’s LT-1—with a hyphen. There have been three incarnations of the LT-1/LT1 engine now, including the latest version for the 2014 Corvette, but the first LT-1 (the hyphen differentiates it from […]
What the New LT2 Mid-Engine Corvette Reveals About the Future of GM LT Engines
Editor’s Note: With the excitement surrounding the General Motors’ confirmation of the new mid-engined C8 Corvette, we asked our friends at Summit Racing to share their thoughts about what the […]
The Top 10 American Performance Engines of the Last 30 Years (#3): Chevy LT5
Editor’s note: The 1980s was a transition period for engine technology in America. The iconic carburetor gave way to fuel injection. Cubic inches were out, and liter designations marked a new era for […]
Video: ATI Overdrive Pulleys for LT4 and Hellcat Engines
Check out the latest overdrive pulleys released by ATI Performance Products by watching the video below. ATI released 5-, 10-, 15- and 20-percent overdrive pulleys for the GM LT4 (the […]
LT4 6.2L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More
This is an engine specification guide for General Motors’ fifth-generation supercharged LT4 engine that launched in 2015. GM has built two different engines designated as the LT4: 1996–1997 LT4 – Gen II, 5.7L, […]
What We Got Right (& Wrong) About the Z06 & LT2 in Our C8 Corvette Speculation Story from 2+ Years Ago
We ran an article way back in April of 2019 in anticipation of the all-new mid-engine C8 Corvette release. The story evaluated some potential technologies featured in the Vette’s nascent […]
LZ1 6.0L Engine Upgrade Guide: Expert Advice for LZ1 Engine Mods to Maximize Performance
[Editor’s Note: This LZ1 engine upgrade guide is the second in a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing. The LZ1 engine […]