You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re tuning tire pressure to track surface for maximum traction. G.L. Alamogordo, NM Q: I’ve noticed that tires have their maximum inflation pressures on the sidewall. I’ve also noticed it’s possible to attain better fuel mileage using higher
Find the camshafts section in your latest Summit Racing catalog and you’ll quickly notice that all the cams are displayed with duration and lift. That’s because veteran gearheads use these key specs to help identify the right cam grind for their engine and application. But there are other, lesser-known specifications you should be aware of
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help a Chevrolet 350-powered 1972 Camaro go to the next level with some street/strip upgrades. J.C. Alda, NE Q: I’m the proud owner of a 1972 Chevy Camaro. It’s motivated by a mostly stock 350 engine with
We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help choose the right carburetor for ’64 Fairlane 500. R.H. El Dorado Hills, CA Q: I have a 1964 Ford Fairlane 500 with a 289 small block. Upgrades include an Edelbrock intake and carburetor, MSD ignition, Hooker Super Competition
Got questions? We’ve got the answers when the Summit Racing tech department tackles your automotive-related conundrums. This week, we help eliminate an engine knock problem. L.P. Roseburg, OR Q: I just put a new 9.7:1 compression 383 small block engine in my 1978 Chevy 4 x 4 pickup. It has less than 100 miles on
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we examine ideal camshaft lobe separation for nitrous applications. D.M. Pitman, NJ Q: Can you shed some light on camshafts made for nitrous engines? Why would they have a lobe separation of 112-114 degrees, versus 106-108 degrees for an otherwise
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help properly convert a Ford 428 FE engine from a hydraulic to solid lifter camshaft. T.B. Boise, ID Q: I have a 428-cubic-inch FE Ford engine that I want to put in a 1971 Mustang. The block is
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we cover the difference between close ratio and wide ratio transmissions and provide casting numbers for GM differential carriers. R.C. Elmore, AL Q: I have a couple questions regarding driveline performance: First, I have seen the terms “close ratio”
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re rebuilding a small block Mopar to produce maximum low-end torque: Q: I am restoring a Dodge M37 military truck. I’m replacing the original 230-cubic-inch straight six with a Chrysler 318 V8 and an NP435 4-speed manual transmission. The
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 rebuilding a big block Chevrolet engine to work with a nitrous oxide system Q: I have a 1973 El Camino with a factory 454 big block. I have updated it with a
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