You’ve got questions, we’ve got answers. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. In this week’s Mailbag, we’re troubleshooting detonation problems that appeared after a new carburetor was installed on a stock Chevy 350. Q: I just bought a 1979 GMC Jimmy with a bone-stock Chevy 350. The first thing
Q: I have a Ford truck with a 390 engine. I had the heads redone and installed a new cam and lifter set, true roller timing chain, valve springs, single plane Edelbrock intake, adjustable rocker arms, and headers. I use the truck to haul my 11 ½-foot camper. When I reach highway speeds and keep the rpms
Okay, I keep reading about there is a difference between detonation and pre-ignition but it seems that whenever I ask anybody about this, they agree but don’t know the difference. The typical answer I get is “It’s really complicated.” So, is it really? J.M. Jeff Smith: This really isn’t all that difficult to explain. Detonation
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re dialing in timing and straightening out a few cam/valvetrain issues.. D.B. • Basom, NY Q: I own a 1977 Chevy 1/2 ton 4×4 with a 350 engine. I’ve had the engine bored .030 inches over, installed flat top
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