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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 […]

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 […]

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 […]

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 […]

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 […]

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 […]

What does this code on my nitrous bottle signify? — M.A. Jeff Smith: The stamp on your bottle represents the date it was certified—in your case December 2017. Each nitrous […]

What would cause a torque converter to stay locked on a 700R4 causing the engine to stall? I just replaced the torque converter after replacing the pump in the transmission. […]

I recently decided to upgrade my steering box in my S-10 pickup. I’ve read that the S-10 uses a very similar front suspension as the G-body cars from that same […]

I have a 302 Windsor V8 EFI engine that I converted to a 600 cfm carburetor with a Street Warrior intake manifold. It runs smooth but seems lazy. I’m now […]