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

by × on July 7, 2021 at 9:10 am × 4 comments

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?

by × on July 1, 2021 at 7:20 am × 2 comments

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

by × on June 16, 2021 at 9:26 am × 2 comments

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

by × on June 9, 2021 at 4:32 pm × 7 comments

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

by × on May 3, 2021 at 9:40 am × 2 comments

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

by × on April 22, 2021 at 9:41 am × 0 comments

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

by × on April 16, 2021 at 10:30 am × 4 comments

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

by × on March 29, 2021 at 9:38 am × 5 comments

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

by × on March 22, 2021 at 11:15 am × 2 comments

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?

by × on March 10, 2021 at 10:24 am × 5 comments

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 […]

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