Q&A

You’ve got questions. We’ve got answers—the Summit Racing tech department tackles your automotive-related conundrums. This week in our Mailbag, we’re discussing what you need to know when choosing a new camshaft. Q: I bought a rebuild kit for my stroker 383 Chevy. It’s .060-inch over (388 cubic inches) with TRW flat top pistons, 10:1 compression, and Brodix Track

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re examining a double ignition setup. Q: I have a V8 engine with a single ignition system. For reliability concerns, a dual ignition system is needed. With single spark plugs per cylinder, is there any way a “backup” ignition system could

I purchased a used hydraulic roller camshaft from a friend that was originally used in an LS1 engine. My buddy says it’s a mild cam that’s bigger than a stock LS6 version, but he didn’t have any more information. The end of the cam is stamped 3709/3711 HR 114 followed by CC and 7661-11. Can

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re troubleshooting a weak charging system. J.W. Dix Hills, NY Q: I own a 1969 Ford Bronco which I am rebuilding to near race standards. I have completely rewired the truck and have come across a snag. For some reason I cannot

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing cam size and idle quality. Q: I am modifying a 1990 Mustang LX 5.0L. I installed a B303 Ford Racing roller cam. Other modifications include a Flowmaster Force II exhaust, underdrive crank pulley, 180-degree thermostat, K&N air filter, Hypertech Power Module, GT-40

What exactly is vapor lock? My friends say I have a problem with vapor lock. Last summer, my small block 350 Camaro had problems in the heat of late summer where it would start running poorly and eventually quit running and it has already happened again this year. If I let it cool down for

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing how bending exhaust pipes affects vehicle performance.   Q: My 1973 Dodge Dart Sport has a 340 cu. in. engine and I want to give it a dual exhaust system. My local exhaust shop can bend the pipe

You’ve got questions. We’ve got the answers— the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing high coolant temperatures at highway speeds. R.L.  Derry, NH Q. I have a 1988 GMC K-1500 four-wheel-drive pickup. It has a 5.0L V8 and a five-speed transmission. The only major option is air conditioning. I have added

What type of spark plugs do I use on my ZZ3 motor? I know that there are a lot of different spark plugs but what type do I use in my engine? I have some plugs that have a lot of threads and I have a set with short threads. Which ones do I use?

You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing Ford engine swaps–specifically the Coyote 5.0L. Q. “What about Ford engine swaps?” That’s the general theme of some of the emails and comments we’ve received recently. It’s because the GM LS has arguably become today’s king of engine swap engines.