Tech

Ask Away! with Jeff Smith: Rectangle vs. Cathedral Port Heads – Which is Right for Your LS?
Q&A / Tech / Tech Articles

Ask Away! with Jeff Smith: Rectangle vs. Cathedral Port Heads – Which is Right for Your LS?

Everything I read says that the big rectangle ports for LS engines flow better than the cathedral ports. But then I know some pretty quick street cars running cathedral port […]

Carbureted vs. EFI: Fuelab Examines How Fuel Line Size Relates to Fuel Pressure Drop (and Why it Matters)!
Tech / Tech Projects

Carbureted vs. EFI: Fuelab Examines How Fuel Line Size Relates to Fuel Pressure Drop (and Why it Matters)!

Does size really matter when it comes to fuel lines? According to the fuel delivery system experts at Fuelab, it does. It’s because fuel line size and length have a direct […]

Monday Mailbag: Choosing Between Even and Split-Duration Camshafts
Q&A / Tech

Monday Mailbag: Choosing Between Even and Split-Duration Camshafts

You’ve got questions. We’ve got answers—Mondays, when the Summit Racing tech department tackles your automotive-related conundrums. This week in our Monday Mailbag, we’re evaluating even and split-duration camshafts. R.C.  Slidell, LA Q: I’m […]

Knock sensor replacement on your Chevy/GMC Silverado/Sierra/Tahoe etc. is an easier job than you think.
Tech / Tech Projects

Saving Silverado (Part 6): Replacing the Knock Sensor on LS-Powered GM Trucks

Search the Internet about it and you’ll quickly find that failing knock sensors in LS-powered GM trucks are a common occurrence. Replacing a knock sensor may seem like a daunting task once […]

Trans-Brake Tell-All: What a Trans-Brake Does & How to Use It
Tech / Tech Articles

Trans-Brake Tell-All: What a Trans-Brake Does & How to Use It

Before the advent of the trans-brake, racers using automatic transmissions were at the mercy of the foot brakes installed in their respective cars. The stick shift guys had a big advantage, […]

Quick Tech: High-Volume Oil Pumps and When You Might Need One
Tech / Tech Articles / Videos & Galleries

Quick Tech: High-Volume Oil Pumps and When You Might Need One

Most people know Jason Line for his on-track accomplishments. But Line and teammate Greg Anderson are hands-on gearheads. Both spend countless hours wrenching on their Pro Stock engines as well as their […]

Monday Mailbag: Finding Possible Causes (and Cures) for Engine Bog
Q&A / Tech

Monday Mailbag: Finding Possible Causes (and Cures) for Engine Bog

You’ve got questions. We’ve got answers—Mondays, when the Summit Racing tech department tackles your automotive-related conundrums. This week in our Monday Mailbag, we’re tracking down some possible causes of engine bogging. M.T.  San […]

The Vortec iron small-block Chevy head offer 1.94/1.60-inch vales and 64cc combustion chambers and flow better than any other production iron small-block Chevy head. Their limitation is a limited valve lift potential. Machining the guides to increase the retainer-to-seal clearance is an inexpensive way to convert these heads to use a bigger cam with valve lifts up to 0.550-inch.
Q&A / Tech

Ask Away! with Jeff Smith: Blueprint for a Budget Small Block Chevy Build

I want to build a mild, 350ci small-block Chevy for a ’77 Chevy pickup I’ll use as a daily driver. The trans will be a TH-350 with a stock torque […]

Head Start (Part 2): A Basic Guide to Choosing Aftermarket Cylinder Heads
Tech / Tech Articles

Head Start (Part 2): A Basic Guide to Choosing Aftermarket Cylinder Heads

In our Head Start series, we’re giving you the dos and don’ts of choosing aftermarket cylinder heads. Part One covered the don’ts — the most common mistakes people make when cylinder head shopping. Now we’re […]

Video: How to Choose the Right Crate Engine
How Tos / Tech / Videos & Galleries

Video: How to Choose the Right Crate Engine

If you’ve decided to go with a crate engine instead of the original engine or a used engine on your vehicle build, there are several choices you’ll need to make. […]