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Measuring valve seal to valve spring retainer clearance

Ask Away! with Jeff Smith: Not Enough Clearance Equals Bent Pushrods

I have a 355ci small block Chevy engine in my pickup. It has a set of those triple triangle Vortec heads, and I just added a bigger COMP Cams 268H […]
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Measuring combustion chamber volume

Ask Away! with Jeff Smith: Compression Options for a Chevy 427 Big Block

I picked up a 1969 L72 427. It has a stock short block with 11:1 pistons, a forged steel crank, and four-bolt mains. I’m using a COMP Cams 270 hydraulic […]
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Malibu fender badge on a Chevy Chevelle

Mailbag: Best Rear End Gear Choices for a 454-Powered Drag Car Project

Q: I am turning my Chevy Malibu into a drag car. I am running a 1974 Chevy 454 with an Edelbrock Air-Gap intake, a single four-barrel carburetor, a mid 1970s […]
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aeromotive stacked fuel pressure regulators

Regulators & Nitrous Fuel Pressure Basics

Q: I’m adding a nitrous oxide kit to my carbureted fuel system, which uses a bypass-style regulator. Can I add a second regulator (either non-return or return style) to control […]
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Front end alignment machine readout

Ask Away! with Jeff Smith: Setting Up an Aftermarket Front Suspension for Drag Racing

I have a complete Chris Alston front suspension for my 1970 Chevelle. I’ve got it all installed but need to know how you adjust it to properly align everything for drag […]
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Chevy 492 cylinder head double hump marking

Ask Away! with Jeff Smith: All About Chevy’s #492 Cylinder Heads for Small Blocks

What can you tell me about the factory small block Chevy iron cylinder heads with the 492 casting number? I have a set of iron heads with screw-in studs, pushrod […]
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Measuring piston deck height

Ask Away! with Jeff Smith: How Piston Valve Reliefs Can Affect Combustion Chamber Volume

I am building a 355ci small block Chevy and considering which piston to use. I’m leaning toward a set of stock replacement cast pistons with four valve reliefs. What I […]
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bumper and nose of an opel gt

Ask Away! with Jeff Smith: Gearing, Engine & EFI Advice for a 350 SBC in a Pro Street Opel GT

My project is a 1973 Opel GT Pro Street car. The engine is a SBC 350 with 4 bolt mains and the heads will be replaced with older 2.02/1.60 style […]
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stud and port near crankshaft in an engine block

Ask Away! with Jeff Smith: My Freshly Rebuilt Small Block Chevy Doesn’t Build Oil Pressure During the Pre-Lube Process

I just assembled my small-block Chevy 350 engine and also used a drill motor and an old distributor to pressure lube the engine before I fired it up. Unfortunately, it […]
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crankshaft in an engine block

Ask Away! with Jeff Smith: Engine Rebuild Options After Damage from a Broken Piston

I screwed up and over-revved my LS6 motor in my 2000 Camaro and I think I broke a piston. I was lucky and there was only minor damage to the […]
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