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Jeff Karls's Articles
Jeff Karls
Member since Oct 28 2016

Jeff is the Product Manager for the street and muscle side of Speedway Motors. He has been a life-long hot rodder with a variety of projects over the years. Whether he's working on his '46 Ford, '54 Chevy, or his upcoming project - a '67 Chevelle - Jeff is a knowledgeable resource with a real knack for thoroughly explaining the process.

Jeff Karls's Articles

by Jeff Karls - Posted in Tech
3/22/2021
In this article, Jeff provides tips on how to successfully install a custom length driveshaft into his 1967 Chevelle. This guide explains how to take accurate measurements while choosing your specific length, slip yoke, and u-joints for a perfect fit.
by Jeff Karls - Posted in Tech
3/18/2021
See how this natural fitting Speedway Motors stainless steel coolant expansion overflow tank is installed in a 1967 Chevelle. Learn tips on how to prep the canister for paint work and recommended paint brands to use for this project.
by Jeff Karls - Posted in Tech
2/22/2021
This project consists of installing a RetroSound head unit into a 1967 Chevelle. Learn the advantages of this type of unit from accepting multiple faces to the extensively adjustable equalizer.
by Jeff Karls - Posted in Tech
2/9/2021
Jeff's Chevelle gets a dash overhaul. Follow along as he assembles the dash components and installs the A/C evaporator unit. This project highlights a refinished dash top, Astro vents and a new padded dash bumper.
by Jeff Karls - Posted in Tech
1/22/2021
This Dakota Digital Instrument Cluster, modeled after a factory SS dash, is a must for your Classic car or Muscle car. Check out this article to learn about the unique features and how it requires only one cable to plug in for install!
by Jeff Karls - Posted in Tech
1/15/2021
Follow this detailed guide on installing a FiTech EFI system in a '67 Chevelle. Learn helpful tips along the way including how to route the blue trigger wire away from the coil and ignition system.
by Jeff Karls - Posted in Tech
1/7/2021
Follow this guide on how to install a splined sway bar for GM A-body applications. See the installation process on a '68 Chevelle frame using stock control arms and factory chassis bolt and pad locations.
by Jeff Karls - Posted in Tech
12/31/2020
See the final steps of installing a custom exhaust system on a '67 Chevelle. Learn some tips on how to offset and install the exhaust U bend tailpipe.
by Jeff Karls - Posted in Tech
12/21/2020
Next up, Jeff installs a custom exhaust system in his '67 Chevelle. See how he applies tailpipe tips and incorporates exhaust cutouts during the process.
by Jeff Karls - Posted in Tech
12/16/2020
Follow this guide on how to mount a single electric puller fan in a '66 - '67 Chevelle. Learn tips on taking measurements and installing a rubber spacer to prevent the fan from rubbing.
by Jeff Karls - Posted in Tech
12/9/2020
Learn the basic function of a torque converter along with alternative ways to cool your Chevy transmission.
by Jeff Karls - Posted in Tech
12/1/2020
See how to properly install a DeWitt's Direct Fit radiator in a 66-67 Chevelle. Learn the benefits of Black Ice coating on this radiator including optimal heat transfer.
by Jeff Karls - Posted in Tech
11/24/2020
Follow this guide to see how Jeff upgrades his power steering system. Learn how to cut and assemble a -6 AN hose and fittings for optimal connection to the power steering pump.
by Jeff Karls - Posted in Tech
11/17/2020
Learn how to assemble a Gotta Show transmission cooler line kit for common GM transmissions. Jeff shares some helpful tips on measuring and cutting the braided stainless steel hose for an easier installation.
by Jeff Karls - Posted in Tech
11/10/2020
Learn about the G Force crossmember and how the symmetrical product design makes for a smooth installation on Jeff's 1967 Chevelle.
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