Ask Away! with Jeff Smith: Adding Power to a Ski Boat SBC—EFI or Carburetor?
I’ve got a direct-drive ski boat with a worn out 350 c.i.d. small-block Chevy. I’m thinking about building a new engine with modest goals. It’s a family boat, but I […]
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Tech Articles
Ask Away! with Jeff Smith: Tuning an Edelbrock 1406 Carb to Cure Fat-Running ’72 Jeep CJ-5
I have a 1972 Jeep CJ-5 with a 3.73:1 gear and 33-inch M/T tires. The engine is an AMC 360 rebuilt with 8.75:1 compression, stock heads, and a COMP Thumper […]
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Ask Away! with Jeff Smith: Diagnosing Oil Pressure Drops in a Big Block Chevy
I have a big-block Chevy in a ‘69 El Camino that I just purchased. I really don’t know much about the engine other than it is a 454 with an […]
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Ask Away! with Jeff Smith: Upgrading 6L80/6L90 Transmissions for Boost
I have a 2015 Silverado with a 5.3L with long tube headers and I’ve installed a Whipple supercharger. My 6-speed trans is now slipping. Can you give me any direction […]
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Ask Away! with Jeff Smith: Calculating Valve Spring Clearance for Existing Cam
I bought a set of TFS valve springs (PN 16918-16) for my Summit 8702 cam for an LS engine and I realized these springs are only good up to a […]
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Ask Away! with Jeff Smith: Cost-Effective Ways to Increase Low-End Torque
I’ve been reading you for years at various magazines like PHR, Hot Rod, and Car Craft. I’ve been curious about the lower end of the torque curve. Looking at various […]
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Ask Away! with Jeff Smith: Tips for Maxxing MPG with Fuel Mixing
I have a 2012 F-250 Ford built to use flex fuel. What is the best way to maximize miles per gallon? Is there any advantage to running 1/2 tank of 93 […]
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Ask Away! with Jeff Smith: Cam Swap Tech for 5.3L LS/Vortec Engines
I’ve seen in a 4.8L LS engine story where you used a COMP short duration hydraulic roller cam and the engine made really good power. That cam, if I recall […]
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Ask Away! with Jeff Smith: Curing Engine Stumble in a Big Block Chevy 454
I just bought a big-block Chevy pickup from my neighbor who has had the truck for years. He’s been tinkering with it but has finally decided it’s smarter than he […]
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Ask Away! with Jeff Smith: How to Set Up an Advance Curve Without a Distributor Machine
I’m in the process of tuning up the HEI distributor in my 350 small-block Chevy. The engine has a mild cam. My understanding is that to re-curve my distributor it […]
