Q&A

Q&A

Ask Away! with Jeff Smith: Using E85 or Octane Boosters in a High-Compression 283 SBC with a Cruising-Speed Stumble

I am an old school pepper tree mechanic, and not quite in tune with 12:1 compression ratio small block Chevys. I have a 1962 Rambler Classic with a 283 with 12:1 […]

Q&A

Ask Away! with Jeff Smith: What Does “Inches of Mercury” Mean & How Does It Measure Vacuum?

Can you give me a short explanation of what inches of mercury is and how it is measures manifold vacuum? I just don’t understand it. Thanks! J.J. This can sometimes […]

Q&A

Ask Away! with Jeff Smith: Adjustments for an Edelbrock AVS2 Carburetor with a Slight Hesitation

I recently bought one of those new 750 cfm Edelbrock AVS2 carburetors for my 1969 Satellite with a 383 V8. It runs pretty good but it has a slight hesitation […]

Q&A

Ask Away! with Jeff Smith: Improving Fuel Economy in a Quadrajet-Equipped 350 Chevy Camaro Z28

I have a 1980 Chevy Camaro Z28 that’s in really good shape with the stock 350 and the original Quadrajet carburetor. The car is all stock. Instead of making more […]

Q&A

Ask Away! with Jeff Smith: Getting to 400+ Horsepower in an LS1-Equipped Fourth-Gen Camaro

I have a 2000 fourth-gen Camaro with an LS1 and a six-speed that I just bought. The car runs great—but now that I’ve had it for awhile, I’d like to […]

Q&A

Ask Away! with Jeff Smith: A Good Camshaft Suggestion for a Modified Chevy 383 Stroker LS6 Engine

I have a 5.7L LS6 engine out of a 2005 Caddy CTS-V that dropped an intake valve with just over 50K on the odometer. The damage was not too extensive (no […]

Q&A

Ask Away! with Jeff Smith: Troubleshooting Alternator & Electrical Gremlins in a Vintage Oldsmobile

I have a weird problem that you might be able to help me with. I have a ’64 Olds F-85 that I upgraded to a later model internally-regulated alternator. This […]

Q&A

Ask Away! with Jeff Smith: Steam Holes & Cylinder Heads for a Small Block Chevy 400

I’d like to build a Chevy 400 to drop in my short box pickup. The goal is a fun street truck, no track time, more likely to hit the highway […]

Q&A

Ask Away! with Jeff Smith: Building a Fuel System That Can Handle Both Carbureted and EFI Setups

I’m building a street big block Chevy 496 that will make around 650 hp. I’m trying to decide whether to go with EFI or still run a carburetor. But before […]

Q&A

Ask Away! with Jeff Smith: Are There Benefits of Staggered Rocker Arms?

Why do some engine builders stagger the rocker arms, 1.6 on the intake and 1.5 on the exhaust?  Is there any benefit in doing that?G.L. This is a great question and […]