Ask Away! with Jeff Smith: How Camshafts Relate to Exhaust Smell
I have a ’68 383 Road Runner, I bought it as a non-running car and it had a considerable cam in it when I got it—I think it is the Purple cam with 0.509-inch lift. The engine idles with only about 8-9 inches of vacuum. I have a 5-speed Tremec TKO 600 in the car. I
Carburetor Basics 101: A Quick Overview of Primary and Secondary Barrels for Street or Race Applications
There is much to consider when choosing a carburetor for your vehicle. Airflow, choke style, and even the physical height of your carburetor will come into play. But what about the barrels? How do they work? And what type of secondaries do you want? Here are the basics you need to know about primary and
A Quick Guide to Carburetor Heights (and Why They’re Important)
When it comes to choosing a carburetor, there are lots of things to consider: airflow, choke style, and secondary type, to name a few. But what about the physical height of the carburetor? The main reason carburetor height is important is hood clearance, especially on certain applications such as Corvettes, and big block Chevelles and Camaros. Most air cleaners and intake manifolds are listed with
Ask Away! with Jeff Smith: A Step-by-Step Guide to Curing Engine Hesitation
My neighbor kid just bought a ’69 C10 pickup with a 350 small block with a Holley carburetor an aluminum intake, cast iron exhaust manifolds, and a TH350 automatic. He’s been driving it around when the weather’s nice and since I’m the old guy in the neighborhood with a couple of hot rods, he comes
Ask Away! with Jeff Smith: Comparing EFI vs. Carburetion on a 6.0L LS Swap
I’m considering swapping a 6.0L truck LS engine into my ’69 Chevy pickup and I’m trying to decide which intake system to use. My engine has the stock plastic, truck intake manifold and injectors but I don’t have a wiring harness or a computer. Would it be cheaper just to buy an intake manifold and
Mailbag: Tuning Your Carburetor for Mid and Upper RPM Power
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re setting up a Holley carburetor for mid and high rpm power production. Q: I have a small block Chevy 350, bored .030-inch over, in a 1970 Buick Skylark. It has TRW flat top pistons, stock 1.94-inch intake
Mailbag: Matching Carb to Cam with Demon Carburetion
We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help choose the right carburetor for ’64 Fairlane 500. R.H. El Dorado Hills, CA Q: I have a 1964 Ford Fairlane 500 with a 289 small block. Upgrades include an Edelbrock intake and carburetor, MSD ignition, Hooker Super Competition
Mailbag: “What is Causing My Car to Hesitate?”
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we find possible causes and cures for engine hesitation. R.H. Grand Rapids, MI Q: I have a 1979 Trans Am powered by a 406 small block Chevy. The engine has 9.67:1 compression, GM cast iron cylinder heads with Crane
Video: How to Tune Electric and Manual Carburetor Chokes
Learn how to tune electric and manual carburetor chokes to help you start your carbureted vehicle on a cold morning. You’ll also learn how to find the correct choke position on your carburetor. It’s 11 minutes of the geniuses at Summit Racing spitting knowledge. Get some.
Video: How to Adjust the Accelerator Pump on Your Holley-Style Carburetor
Prevent engine sputtering by learning how to properly tune your Holley-style four-barrel carburetor’s accelerator pump. Watch this 24-minute video and learn everything you’ll need to know to achieve smooth, consistent launches at the track, and the pedal response you seek on your next drive. Before you dive into tackling your accelerator pump adjustments, you may
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