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Stylized picture of ethanol bled fuel pumps at a gas station

Ask Away! with Jeff Smith: What is Safe Effective Compression Ratio for E85?

What is a general safe effective compression ratio on E85? The internet results in varying opinions from 13:1 up to an extreme 20:1. Jeff Smith: This is an interesting question […]
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tri power engine in a hot rod

Ask Away! with Jeff Smith: The Pros and Cons of the Chevy Inline Six for Old-School Hot Rods

I was at my local car show the other day and I talked with a guy who built an inline Chevy 6 for his street rod. I was interested in […]
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an ls engine on a stand

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 […]
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Quick Fuel E85 carburetor

Ask Away! with Jeff Smith: The Pros and Cons of E85 in Performance Applications

Old guy up in Canada scratching his head and wondering: A: Is the oxygen in ethanol as hard on aluminum parts as the information available on the web says it […]
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Alternator on a car engine

Ask Away! with Jeff Smith: When and How to Update (and Upgrade) the Charging System in a Classic Car

I just bought my first car, a ’64 Chevelle with a 283 small-block and a Powerglide trans. The engine runs well, but I’m concerned that when I put the engine […]
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a broken driveshaft

Ask Away! with Jeff Smith: Examining Common Causes of Driveshaft Failure

I recently went with my buddy to chassis dyno test his LS-powered Nova and toward the end of the first test the car spit the driveshaft out and it went […]
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adjusting vacuum advance curve on a distributor

Ask Away! with Jeff Smith: Examining Timing Advance in Street vs. Race Engines

Do you know of or are you a good source for questions about timing? I’m not talking about the basics. I think I have that figured out. A question I […]
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thumpr camshafts

Ask Away! with Jeff Smith: How to Decode a COMP Cams Camshaft

I purchased a used hydraulic roller camshaft from a friend that was originally used in an LS1 engine. My buddy says it’s a mild cam that’s bigger than a stock […]
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a carburetor atop an old v8 engine

Ask Away with Jeff Smith: Understanding Vapor Lock–and How You Can Fix It!

What exactly is vapor lock? My friends say I have a problem with vapor lock. Last summer, my small block 350 Camaro had problems in the heat of late summer […]
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Man holding an automotive spark plug

Ask Away with Jeff Smith: Choosing Spark Plugs for Chevy ZZ Crate Motors

What type of spark plugs do I use on my ZZ3 motor? I know that there are a lot of different spark plugs but what type do I use in […]
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